[BOT ISSUE] Google/Vertex: `gemini-3.1-flash-lite` missing `vertex` in `available_providers`

[github-actions]

Summary

The base catalog entry for gemini-3.1-flash-lite lists only "google" in available_providers, but the model is confirmed available on Vertex AI. A Vertex-specific entry (publishers/google/models/gemini-3.1-flash-lite) already exists in the catalog, but the base entry was not updated to include "vertex".

This is an oversight from PR #600 (afc3220), which added the publishers/google/models/gemini-3.1-flash-lite entry but did not update the base entry's available_providers.

Gap

The base entry gemini-3.1-flash-lite (line ~6756 in model_list.json) has:

"available_providers": ["google"]

It should be:

"available_providers": ["google", "vertex"]

Evidence of inconsistency

The preview version of the same model is correctly configured:

• gemini-3.1-flash-lite-preview (line ~6044) has available_providers: ["google", "vertex"] ✅
• publishers/google/models/gemini-3.1-flash-lite-preview (line ~8530) also exists ✅

Every other current Gemini 3.x model lists both providers:

• gemini-3.5-flash → ["google", "vertex"]
• gemini-3.1-pro-preview → ["google", "vertex"]
• gemini-3-flash-preview → ["google", "vertex"]

Additionally, the base entry is missing supported_regions that the preview version has (["global"]).

Verification checklist

• Cross-source: Model confirmed on Vertex AI pricing page (lists gemini-3.1-flash-lite with Global $0.25/$1.50 and Non-global $0.275/$1.65 pricing) AND on the Google AI models page (listed as "Stable")
• Recent commits: PR add gemini 3.1-flash-lite for vertex #600 added the Vertex-specific entry but did not update the base entry
• ID format: Entry already exists — only available_providers needs updating
• Existing issues: No open issue covers this gap (searched gemini-3.1-flash-lite vertex)

Verification notes

Field	Source	Notes
Vertex availability	Vertex AI pricing page	Listed with Global and Non-global pricing tiers
Google AI availability	Google AI models page	Listed as "Stable"
Vertex entry exists	model_list.json line ~8546	publishers/google/models/gemini-3.1-flash-lite already present
Base entry missing vertex	model_list.json line ~6756	available_providers: ["google"] — missing "vertex"
Preview version correct	model_list.json line ~6044	gemini-3.1-flash-lite-preview has ["google", "vertex"]

Local files inspected

• packages/proxy/schema/model_list.json — confirmed inconsistency between base entry and Vertex-specific entry

Source URLs

• https://cloud.google.com/vertex-ai/generative-ai/pricing
• https://ai.google.dev/gemini-api/docs/models/gemini

{
  "kind": "missing_model",
  "provider": "vertex",
  "models": ["gemini-3.1-flash-lite"],
  "status": "active",
  "model_specs": {
    "gemini-3.1-flash-lite": {
      "format": "google",
      "flavor": "chat",
      "multimodal": true,
      "available_providers": ["google", "vertex"],
      "supported_regions": ["global"],
      "input_cost_per_mil_tokens": 0.25,
      "output_cost_per_mil_tokens": 1.5,
      "input_cache_read_cost_per_mil_tokens": 0.025,
      "displayName": "Gemini 3.1 Flash-Lite",
      "reasoning": true,
      "reasoning_budget": true,
      "max_input_tokens": 1048576,
      "max_output_tokens": 65536
    }
  },
  "source_urls": [
    "https://cloud.google.com/vertex-ai/generative-ai/pricing",
    "https://ai.google.dev/gemini-api/docs/models/gemini"
  ]
}

[github-actions]

Closing this bot issue because gemini-3.1-flash-lite is already present in packages/proxy/schema/model_list.json.

Verification sources: https://cloud.google.com/vertex-ai/generative-ai/pricing, https://ai.google.dev/gemini-api/docs/models/gemini