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feat: add GPT-5.4 and GPT-5.4-Codex to OpenAI Codex (ChatGPT Plus/Pro) provider#11888

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feat: add GPT-5.4 and GPT-5.4-Codex to OpenAI Codex (ChatGPT Plus/Pro) provider#11888
roomote-v0[bot] wants to merge 1 commit intomainfrom
feature/add-gpt-5.4-codex-models

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@roomote-v0 roomote-v0 bot commented Mar 7, 2026

This PR attempts to address Issue #11887. It adds GPT-5.4 and GPT-5.4-Codex models to the OpenAI Codex (ChatGPT Plus/Pro) provider.

Changes

  • packages/types/src/providers/openai-codex.ts: Added gpt-5.4 and gpt-5.4-codex model entries with subscription-based (zero cost) pricing, 1M+ token context windows, and appropriate reasoning effort levels. Updated openAiCodexDefaultModelId from gpt-5.3-codex to gpt-5.4-codex.
  • src/api/providers/__tests__/openai-codex.spec.ts: Added test coverage for both new models and updated fallback default test.

Model details

  • gpt-5.4: General-purpose model with thinking/non-thinking modes (none through xhigh reasoning effort), 1,050,000 token context window
  • gpt-5.4-codex: Codex-optimized variant for agentic coding with apply_patch tool format, 1,050,000 token context window

Note: Computer Use capability mentioned in the issue is out of scope for this change.

Feedback and guidance are welcome.

Interactively review PR in Roo Code Cloud

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