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GPT-5.1 vs GPT-5.1 Codex Max
Comprehensive side-by-side LLM comparison
GPT-5.1 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5.1, released by OpenAI in November 2025, is a large language model from the GPT-5 family that delivers incremental improvements in reasoning, instruction following, and multimodal understanding over GPT-5. It features a 400K token context window and targets general-purpose development, long-context analysis, and agentic workflows.
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OpenAI
GPT-5.1 Codex Max, released by OpenAI in November 2025, is an enhanced coding variant from the GPT-5.1 Codex line, designed for more complex software engineering tasks requiring additional reasoning depth. It targets large-scale code generation, automated refactoring, and sophisticated agentic development workflows.
Launched on the same date
GPT-5.1
OpenAI
2025-11
GPT-5.1 Codex Max
OpenAI
2025-11
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.1
0 providers
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GPT-5.1 Codex Max
0 providers
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GPT-5.1
Avg Score:0.0%
Providers:0
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GPT-5.1 Codex Max
Avg Score:0.0%
Providers:0