[BOT ISSUE] Cerebras: add missing zai-glm-4.7 model

[github-actions]

Gap

The Cerebras model zai-glm-4.7 is missing from packages/proxy/schema/model_list.json. It is listed on both the Cerebras inference docs model overview and the Cerebras pricing page as a current offering (Preview status).

The catalog already has two Cerebras models: gpt-oss-120b (line 1519, with cerebras in available_providers) and llama3.1-8b (line 6011, Cerebras-only).

Official sources

Field	Value	Source
Model ID	zai-glm-4.7	Cerebras model overview
Parameters	355B	Cerebras model overview
Speed	~1000 tokens/s	Cerebras model overview
Status	Preview	Cerebras model overview + pricing page
Input cost	$2.25 / MTok	Cerebras pricing page
Output cost	$2.75 / MTok	Cerebras pricing page

• Model overview: https://inference-docs.cerebras.ai/models/overview
• Pricing: https://cerebras.ai/pricing

Suggested entry

"zai-glm-4.7": {
  "format": "openai",
  "flavor": "chat",
  "input_cost_per_mil_tokens": 2.25,
  "output_cost_per_mil_tokens": 2.75,
  "displayName": "Z.ai GLM 4.7",
  "available_providers": ["cerebras"]
}

Notes:

• Context window and max output tokens are not specified in Cerebras docs; omitted from suggested entry.
• Model is in Preview status — Cerebras notes "Preview models are intended for evaluation purposes only, and are not intended for use in production environments."
• Format assumed openai based on existing Cerebras entries (gpt-oss-120b, llama3.1-8b).
• This is described as a 355B-parameter reasoning model from Z.ai. Whether it supports reasoning: true in the schema is not confirmed.

Local files inspected

• packages/proxy/schema/model_list.json — no entry for zai-glm-4.7
• Existing Cerebras entries at lines 1519 (gpt-oss-120b) and 6011 (llama3.1-8b) used as reference

{
  "kind": "missing_model",
  "provider": "cerebras",
  "models": ["zai-glm-4.7"],
  "status": "preview",
  "source_urls": [
    "https://inference-docs.cerebras.ai/models/overview",
    "https://cerebras.ai/pricing"
  ]
}

[github-actions]

Prepared catalog updates for zai-glm-4.7. Added models: zai-glm-4.7.

Verification sources: https://inference-docs.cerebras.ai/models/overview, https://inference-docs.cerebras.ai/models/zai-glm-47, https://cerebras.ai/pricing
Verified metadata applied:

• zai-glm-4.7: format=openai, flavor=chat, displayName=Z.ai GLM 4.7, max_input_tokens=131072, max_output_tokens=40960, pricing(input/output per 1M)=2.25/2.75, providers=cerebras, reasoning=true

Opened #679 to apply the catalog update.