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GPT-5.1 Codex vs GPT-5.2 Codex
Comprehensive side-by-side LLM comparison
GPT-5.2 Codex leads with 2.1% higher average benchmark score. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5.1 Codex, released by OpenAI in November 2025, is a coding-specialized model from the GPT-5.1 family engineered for software engineering tasks including code generation, multi-file editing, and agentic development. It targets developers and automated coding pipelines requiring a GPT-5.1-generation model tuned for programming.
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OpenAI
GPT-5.2 Codex is a coding-specialized variant from the GPT-5.2 family, designed for software engineering workflows including automated code generation, multi-file editing, and agentic development. It builds on GPT-5.2's improved instruction following and long-context capabilities, with optimizations specifically targeting programming tasks and agentic software workflows.
2 months newer
GPT-5.1 Codex
OpenAI
2025-11
GPT-5.2 Codex
OpenAI
2026-01-14
Average performance across 1 common benchmarks
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GPT-5.1 Codex
Average Score:42.9%
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GPT-5.2 Codex
Average Score:45.0%(+2.1%)
Performance comparison across key benchmark categories
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GPT-5.1 Codex
Coding42.9%
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GPT-5.2 Codex
Coding45.0%(+2.1%)
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.1 Codex
0 providers
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GPT-5.2 Codex
0 providers
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GPT-5.1 Codex
Avg Score:42.9%
Providers:0
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GPT-5.2 Codex
Avg Score:45.0%(+2.1%)
Providers:0