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Merge branch 'main' into nc/fix-15974
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‎FirebaseAI/CHANGELOG.md‎

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# Unreleased
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- [deprecated] All Imagen models are deprecated and will shut down as early as June 2026.
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As a replacement, you can [migrate your apps to use Gemini Image models (the "Nano Banana" models)](https://firebase.google.com/docs/ai-logic/imagen-models-migration).
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# 12.12.0
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- [fixed] Updated `GenerativeModelSession` to handle intermediate JSON decoding
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failures when streaming structured data. (#15960)

‎FirebaseAI/Sources/FirebaseAI.swift‎

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@@ -130,12 +130,25 @@ public final class FirebaseAI: Sendable {
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/// - Note: Refer to [Imagen models](https://firebase.google.com/docs/vertex-ai/models) for
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/// guidance on choosing an appropriate model for your use case.
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///
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///
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana"
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/// models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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///
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/// - Parameters:
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/// - modelName: The name of the Imagen 3 model to use.
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/// - generationConfig: Configuration options for generating images with Imagen.
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/// - safetySettings: Settings describing what types of potentially harmful content your model
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/// should allow.
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/// - requestOptions: Configuration parameters for sending requests to the backend.
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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public func imagenModel(modelName: String, generationConfig: ImagenGenerationConfig? = nil,
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safetySettings: ImagenSafetySettings? = nil,
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requestOptions: RequestOptions = RequestOptions()) -> ImagenModel {
@@ -169,7 +182,19 @@ public final class FirebaseAI: Sendable {
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/// Initializes a new `TemplateImagenModel`.
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///
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana"
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/// models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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///
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/// - Returns: A new `TemplateImagenModel` instance.
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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public func templateImagenModel() -> TemplateImagenModel {
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return TemplateImagenModel(
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generativeAIService: GenerativeAIService(firebaseInfo: firebaseInfo,

‎FirebaseAI/Sources/TemplateImagenGenerationRequest.swift‎

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import Foundation
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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enum ImageAPIMethod: String {
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case generateImages = "templatePredict"
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}
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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struct TemplateImagenGenerationRequest<ImageType: ImagenImageRepresentable>: Sendable {
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typealias Response = ImagenGenerationResponse<ImageType>
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}
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}
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension TemplateImagenGenerationRequest: GenerativeAIRequest where ImageType: Decodable {
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func getURL() throws -> URL {
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var urlString =
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}
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}
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension TemplateImagenGenerationRequest: Encodable {
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enum CodingKeys: String, CodingKey {
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case inputs

‎FirebaseAI/Sources/TemplateImagenModel.swift‎

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import Foundation
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/// A type that represents a remote image generation model (like Imagen), with the ability to
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/// generate
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/// images based on various input types.
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/// generate images based on various input types.
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///
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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///
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/// **Public Preview**: This API is a public preview and may be subject to change.
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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public final class TemplateImagenModel: Sendable {
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let generativeAIService: GenerativeAIService
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let apiConfig: APIConfig

‎FirebaseAI/Sources/Types/Internal/Imagen/ImageGenerationInstance.swift‎

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// See the License for the specific language governing permissions and
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// limitations under the License.
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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struct ImageGenerationInstance {
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let prompt: String
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}
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension ImageGenerationInstance: Equatable {}
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// MARK: - Codable Conformance
2242

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/// @DeprecationSummary {
44+
/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension ImageGenerationInstance: Encodable {}

‎FirebaseAI/Sources/Types/Internal/Imagen/ImageGenerationOutputOptions.swift‎

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import Foundation
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
1727
struct ImageGenerationOutputOptions {
1828
let mimeType: String
1929
let compressionQuality: Int?
2030
}
2131

32+
/// @DeprecationSummary {
33+
/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
2242
extension ImageGenerationOutputOptions: Equatable {}
2343

2444
// MARK: - Codable Conformance
2545

46+
/// @DeprecationSummary {
47+
/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
50+
/// }
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@available(
52+
*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension ImageGenerationOutputOptions: Encodable {}

‎FirebaseAI/Sources/Types/Internal/Imagen/ImageGenerationParameters.swift‎

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// See the License for the specific language governing permissions and
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// limitations under the License.
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
19+
/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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struct ImageGenerationParameters {
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let sampleCount: Int?
1727
let storageURI: String?
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let includeSafetyAttributes: Bool?
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}
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
42+
/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension ImageGenerationParameters: Equatable {}
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3050
// MARK: - Codable Conformance
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
55+
/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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extension ImageGenerationParameters: Encodable {
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enum CodingKeys: String, CodingKey {
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case sampleCount

‎FirebaseAI/Sources/Types/Internal/Imagen/ImagenConstants.swift‎

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import Foundation
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extension Constants {
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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana"
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/// models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
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/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
1829
enum Imagen {}
1930
}
2031

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/// @DeprecationSummary {
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/// All Imagen models are deprecated and will shut down as early as June 2026.
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/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
36+
/// }
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@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
2142
extension Constants.Imagen {
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static let errorDomain = "\(Constants.baseErrorDomain).Imagen"
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‎FirebaseAI/Sources/Types/Internal/Imagen/ImagenGCSImage.swift‎

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1717
/// An image generated by Imagen, stored in Cloud Storage (GCS) for Firebase.
1818
///
19-
/// TODO(#14451): Make this `public` and move to the `Public` directory when ready.
19+
/// @DeprecationSummary {
20+
/// All Imagen models are deprecated and will shut down as early as June 2026.
21+
/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
23+
/// }
24+
@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
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)
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struct ImagenGCSImage: Sendable {
2130
/// The IANA standard MIME type of the image file; either `"image/png"` or `"image/jpeg"`.
2231
///
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3544
}
3645
}
3746

47+
/// @DeprecationSummary {
48+
/// All Imagen models are deprecated and will shut down as early as June 2026.
49+
/// As a replacement, you can [migrate your apps to use Gemini Image models
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/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
51+
/// }
52+
@available(
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*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
56+
)
3857
extension ImagenGCSImage: ImagenImageRepresentable {
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// TODO(andrewheard): Make this public when the SDK supports Imagen operations that take images as
4059
// input (upscaling / editing).
@@ -43,10 +62,30 @@ extension ImagenGCSImage: ImagenImageRepresentable {
4362
}
4463
}
4564

65+
/// @DeprecationSummary {
66+
/// All Imagen models are deprecated and will shut down as early as June 2026.
67+
/// As a replacement, you can [migrate your apps to use Gemini Image models
68+
/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
69+
/// }
70+
@available(
71+
*,
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deprecated,
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message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
74+
)
4675
extension ImagenGCSImage: Equatable {}
4776

4877
// MARK: - Codable Conformances
4978

79+
/// @DeprecationSummary {
80+
/// All Imagen models are deprecated and will shut down as early as June 2026.
81+
/// As a replacement, you can [migrate your apps to use Gemini Image models
82+
/// (the "Nano Banana" models).](https://firebase.google.com/docs/ai-logic/imagen-models-migration)
83+
/// }
84+
@available(
85+
*,
86+
deprecated,
87+
message: "All Imagen models are deprecated and will shut down as early as June 2026. As a replacement, you can migrate your apps to use Gemini Image models (the \"Nano Banana\" models)."
88+
)
5089
extension ImagenGCSImage: Decodable {
5190
enum CodingKeys: String, CodingKey {
5291
case mimeType

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