opencode/gpt-5-nano model available in CLI but missing from TUI #9520

Description

The opencode/gpt-5-nano model is listed when running opencode models command but is not available for selection in the TUI interface.

NOTE: This is a duplicate/variant of known issues #6169 and #6798 - filing to provide specific case for opencode provider models.

Workaround

Based on related issues, potential workarounds:

• Use the model directly in config: "model": "opencode/gpt-5-nano"
• Use via CLI: opencode --model opencode/gpt-5-nano
• Models appear in Desktop App

Plugins

oh-my-opencode@3.0.0-beta.11, opencode-antigravity-auth@1.3.0

OpenCode version

1.1.26

Steps to reproduce

Steps to Reproduce

1. Run opencode models - observe that opencode/gpt-5-nano is listed
2. Run opencode models opencode - confirm the model is available under opencode provider
3. Start the OpenCode TUI
4. Try to select opencode/gpt-5-nano model - it's not available in the model selection

Expected Behavior

Models listed by opencode models should be available for selection in the TUI.

Actual Behavior

opencode/gpt-5-nano appears in CLI model list but not in TUI model selection.

Investigation Details

Current Configuration

The opencode.json file only configures Google provider models:

{
  "provider": {
    "google": {
      "name": "Google",
      "models": {
        // ... Google models only
      }
    }
  }
}

CLI Output

opencode models opencode
opencode/big-pickle
opencode/glm-4.7-free
opencode/gpt-5-nano
opencode/grok-code
opencode/minimax-m2.1-free

Screenshot and/or share link

No response

Operating System

Windows 11

Terminal

Windows Terminal