ChatGPT model-name filter hides explicitly configured Daybreak model

Description

With ChatGPT OAuth authentication, OpenCode 2.0.8 silently hides the explicitly configured model openai/gpt-daybreak-blue-latest. This was working while I was using opencode2 during the beta.

The model is present in the configuration returned by /api/config, but absent from /api/model and the model picker. Other OpenAI models remain available.

The cause appears to be the OpenAI plugin’s model-name filter:
https://github.com/anomalyco/opencode/blob/v2.0.8/packages/core/src/plugin/provider/openai.ts#L264-L292

It matches the API model ID against /^gpt-(\d+)(?:\.(\d+))?/ and sets enabled = false when the name is neither allowlisted nor a qualifying numbered GPT model. gpt-daybreak-blue-latest fails that check regardless of its explicit configuration.

Expected: explicitly configured models should have a supported way to opt out of this name-based heuristic, with actual account access validated by the backend. At minimum, the UI should explain why a configured model was hidden.

Plugins

built-in plugins only

OpenCode version

2.0.8

Steps to reproduce

1. Connect OpenAI using ChatGPT OAuth, ensuring user has TAC (chatgpt.com/cyber)

2. Add this to ~/.config/opencode/opencode.json:

   {
     "$schema": "https://opencode.ai/config.json",
     "providers": {
       "openai": {
         "models": {
           "gpt-daybreak-blue-latest": {
             "name": "GPT Daybreak Blue (Latest)",
             "capabilities": {
               "tools": true,
               "input": ["text", "image"],
               "output": ["text"]
             },
             "limit": {
               "context": 400000,
               "input": 272000,
               "output": 128000
             }
           }
         }
       }
     }
   }
   

3. Open the model picker and search for Daybreak.

4. Confirm /api/config contains the entry, while /api/model omits it.

Screenshot and/or share link

No response

Operating System

Linux x86_64, WSL2; kernel 6.18.33.2-microsoft-standard-WSL2.

Terminal

Windows terminal

Start in packages/core/src/plugin/provider/openai.ts at lines 264-292 and reproduce the discrepancy between /api/config and /api/model with the provided configuration. Trace how the model-name filter affects the model picker, then verify that an explicitly configured Daybreak model is no longer silently omitted and that the intended access behavior is preserved.