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GPT-5 Codex vs o1-pro
Comprehensive side-by-side LLM comparison
o1-pro leads with 30.2% higher average benchmark score. o1-pro supports multimodal inputs. Overall, o1-pro is the stronger choice for coding tasks.
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OpenAI
GPT-5 Codex is a language model developed by OpenAI. It achieves strong performance with an average score of 74.5% across 1 benchmarks. Notable strengths include SWE-Bench Verified (74.5%). Released in 2025, it represents OpenAI's latest advancement in AI technology.
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OpenAI
o1-pro is a multimodal language model developed by OpenAI. This model demonstrates exceptional performance with an average score of 82.5% across 2 benchmarks. It excels particularly in AIME 2024 (86.0%), GPQA (79.0%). As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents OpenAI's latest advancement in AI technology.
9 months newer
o1-pro
OpenAI
2024-12-17
GPT-5 Codex
OpenAI
2025-09-15
Average performance across 3 common benchmarks
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GPT-5 Codex
Average Score:24.8%
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o1-pro
Average Score:55.0%(+30.2%)
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Knowledge Cutoff
Training data recency comparison
o1-pro
2023-09-30
GPT-5 Codex
2024-09-30
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5 Codex
0 providers
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o1-pro
0 providers
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GPT-5 Codex
Avg Score:24.8%
Providers:0
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o1-pro
Avg Score:55.0%(+30.2%)
Providers:0