you want openai-codex/gpt-5.5 (once update is out).
codex harness is still experimental. (codex/gpt…)
API doesn't has 5.5 yet.
OpenAI GPT-5.5 and Codex API Updates
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By
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you want openai-codex/gpt-5.5 (once update is out).
codex harness is still experimental. (codex/gpt…)
API doesn't has 5.5 yet.