OpenAI will not ship a GPT-5.5-Codex model. Romain Huet confirmed the Codex line was absorbed into the main model at GPT-5.4, ending the separate coding track entirely.
GPT-5.5 builds on that merger with targeted improvements in agentic coding, computer use, and general computer tasks. The architecture is unified, not parallel.
The detail worth tracking here is not the product decision but the direction: OpenAI is collapsing specialized models into one system. Watch whether that tradeoff holds as task complexity scales.
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