[BOT ISSUE] xAI: missing canonical model ID grok-4.20-multi-agent-0309

[github-actions]

Summary

The canonical model ID grok-4.20-multi-agent-0309 is listed on xAI's official docs but is absent from model_list.json. The catalog only has the alias grok-4.20-multi-agent-beta-0309. xAI's model detail page explicitly lists grok-4.20-multi-agent-beta-0309 as an alias of grok-4.20-multi-agent-0309, making the non-beta ID the primary/canonical identifier.

Model ID	Status
grok-4.20-multi-agent-0309	Missing from catalog (canonical ID)
grok-4.20-multi-agent-beta-0309	Already in catalog (alias)

Pricing: $1.25 input / $2.50 output / $0.20 cached input per 1M tokens. Context window: 1,000,000 tokens. Multimodal (text, image → text). Reasoning: yes.

Sources

• xAI Models page — lists grok-4.20-multi-agent-0309 as a current model with pricing
• xAI Model detail page — confirms model ID, specs, and lists grok-4.20-multi-agent-beta-0309 as an alias

Verification

Check	Status	Detail
Cross-source	✅	Model confirmed on both models listing page and dedicated model detail page
Already fixed	✅	Confirmed grok-4.20-multi-agent-0309 is not in model_list.json; only the beta alias exists
ID format	✅	Matches existing xAI naming convention (e.g. grok-4.20-0309-reasoning, grok-4.20-beta-0309-reasoning)
Duplicate check	✅	No open issue covers this gap

Verification Notes

Field	Source	Notes
input_cost_per_mil_tokens: 1.25	Model detail page	"$1.25" per million input tokens
output_cost_per_mil_tokens: 2.5	Same page	"$2.50" per million output tokens
input_cache_read_cost_per_mil_tokens: 0.2	Same page	"$0.20" per million cached input tokens
max_input_tokens: 1000000	Same page	"1,000,000 tokens" context window
multimodal: true	Same page	"text, image → text"
reasoning: true	Same page	"Reasoning: Yes"
max_output_tokens	Not published	Not specified on model detail page; omitted rather than guessed

Local Files Inspected

• packages/proxy/schema/model_list.json — grok-4.20-multi-agent-beta-0309 at line ~7315 with matching pricing; grok-4.20-multi-agent-0309 absent
• packages/proxy/schema/index.ts — only grok-4.20-multi-agent-beta-0309 mapped to ["xAI"]

{
  "kind": "missing_model",
  "provider": "xAI",
  "models": ["grok-4.20-multi-agent-0309"],
  "status": "active",
  "model_specs": {
    "grok-4.20-multi-agent-0309": {
      "format": "openai",
      "flavor": "chat",
      "multimodal": true,
      "input_cost_per_mil_tokens": 1.25,
      "output_cost_per_mil_tokens": 2.5,
      "input_cache_read_cost_per_mil_tokens": 0.2,
      "displayName": "Grok 4.20 Multi-Agent (0309)",
      "reasoning": true,
      "max_input_tokens": 1000000,
      "available_providers": ["xAI"]
    }
  },
  "source_urls": [
    "https://docs.x.ai/developers/models",
    "https://docs.x.ai/developers/models/grok-4.20-multi-agent-0309"
  ]
}

[github-actions]

Prepared catalog updates for grok-4.20-multi-agent-0309. Added models: grok-4.20-multi-agent-0309.

Verification sources: https://docs.x.ai/developers/models, https://docs.x.ai/developers/models/grok-4.20-multi-agent-0309
Verified metadata applied:

• grok-4.20-multi-agent-0309: format=openai, flavor=chat, displayName=Grok 4.20 Multi-Agent (0309), max_input_tokens=1000000, max_output_tokens=not provided, pricing(input/output per 1M)=1.25/2.5, input_cache_read_cost_per_mil_tokens=0.2, providers=xAI, reasoning=true, multimodal=true

Included in the daily batch PR: #876