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MarkTechPost
November 20th, 2025 at 3:55 AM

OpenAI Debuts GPT-5.1-Codex-Max, a Long-Horizon Agentic Coding Model With Compaction for Multi-Window Workflows

OpenAI has introduced GPT-5.1-Codex-Max, a frontier agentic coding model designed for long running software engineering tasks that span millions of tokens and multi hour sessions. It is available today inside Codex in the CLI, IDE extension, cloud integration and code review surfaces, with API access planned soon. What GPT-5.1-Codex-Max is optimised for? GPT-5.1-Codex-Max is built […] The post OpenAI Debuts GPT-5.1-Codex-Max, a Long-Horizon Agentic Coding Model With Compaction for Multi-Window Workflows appeared first on MarkTechPost .

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