tweak: tell the model what model it is in environment section of prompt

rekram1-node · rekram1-node · commit 88bcd0465971 · 2026-01-24T12:10:15.000-05:00
diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
@@ -598,7 +598,7 @@ export namespace SessionPrompt {
         agent,
         abort,
         sessionID,
-        system: [...(await SystemPrompt.environment()), ...(await SystemPrompt.custom())],
+        system: [...(await SystemPrompt.environment(model)), ...(await SystemPrompt.custom())],
         messages: [
           ...MessageV2.toModelMessages(sessionMessages, model),
           ...(isLastStep
diff --git a/packages/opencode/src/session/system.ts b/packages/opencode/src/session/system.ts
@@ -52,10 +52,11 @@ export namespace SystemPrompt {
     return [PROMPT_ANTHROPIC_WITHOUT_TODO]
   }
 
-  export async function environment() {
+  export async function environment(model: Provider.Model) {
     const project = Instance.project
     return [
       [
+        `You are powered by the model named ${model.api.id}. The exact model ID is ${model.providerID}/${model.api.id}`,
         `Here is some useful information about the environment you are running in:`,
         `<env>`,
         `  Working directory: ${Instance.directory}`,

Original file line number	Diff line number	Diff line change
`@@ -52,10 +52,11 @@ export namespace SystemPrompt {`
`52`	`52`	`return [PROMPT_ANTHROPIC_WITHOUT_TODO]`
`53`	`53`	`}`
`54`	`54`
`55`		`- export async function environment() {`
	`55`	`+ export async function environment(model: Provider.Model) {`
`56`	`56`	`const project = Instance.project`
`57`	`57`	`return [`
`58`	`58`	`[`
	`59`	+ `You are powered by the model named ${model.api.id}. The exact model ID is ${model.providerID}/${model.api.id}`,
`59`	`60`	`Here is some useful information about the environment you are running in:`,
`60`	`61`	`<env>`,
`61`	`62`	` Working directory: ${Instance.directory}`,