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Model selection is case sensitive #1908
Description
Describe the bug
All the models are names with lower case. If a user inputs a upper case name, then the model picking will fail.
Model "GPT-5.4" is unsupported.
Available models:
- "claude-sonnet-4.6"
- "claude-sonnet-4.5"
- "claude-haiku-4.5"
- "claude-opus-4.6"
- "claude-opus-4.5"
- "claude-sonnet-4"
- "gemini-3-pro-preview"
- "gpt-5.4"
- "gpt-5.3-codex"
- "gpt-5.2-codex"
- "gpt-5.2"
- "gpt-5.1-codex-max"
- "gpt-5.1-codex"
- "gpt-5.1"
- "gpt-5.1-codex-mini"
- "gpt-5-mini"
- "gpt-4.1"
Supported models:
- "claude-opus-4.6-fast"
- "claude-opus-4.6-1m"
For information on Copilot policies and subscription, visit https://github.com/settings/copilot/features
Affected version
GitHub Copilot CLI 1.0.2.
Steps to reproduce the behavior
/models GPT-5.4
Expected behavior
the GPT-5.4 gets selected
Additional context
No response
Activity
ilyazub commentedon Mar 8, 2026
I'd be nice if
/modelprovide autocomplete.copilot-cli-bot commentedon Oct 26, 2026
This appears to be resolved as of GitHub Copilot CLI v1.0.103. Please update to that release or a newer stable version. We're closing this as completed. If it still happens, please comment with your version and reproduction steps.