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GPT-5 Pro vs GPT-5.1 Thinking
Comprehensive side-by-side LLM comparison
GPT-5 Pro leads with 8.0% higher average benchmark score. Overall, GPT-5 Pro is the stronger choice for coding tasks.
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OpenAI
GPT-5 Pro is an extended-reasoning variant from the GPT-5 family that applies more compute per response for deeper, more thorough answers on complex problems. It features the same 400K token context window and multimodal capabilities as GPT-5, with additional reasoning depth suited to research-grade analysis, advanced coding, and tasks requiring comprehensive, accurate outputs.
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OpenAI
GPT-5.1 Thinking, released by OpenAI in November 2025, is an extended reasoning variant from the GPT-5.1 family that applies chain-of-thought processing to improve accuracy on complex reasoning, mathematics, and coding tasks. It targets analytical workflows where deliberate reasoning over a problem significantly improves output quality.
2 months newer
GPT-5 Pro
OpenAI
2025-08-07
GPT-5.1 Thinking
OpenAI
2025-11
Average performance across 1 common benchmarks
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GPT-5 Pro
Average Score:31.6%(+8.0%)
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GPT-5.1 Thinking
Average Score:23.7%
Performance comparison across key benchmark categories
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GPT-5 Pro
Reasoning31.6%(+8.0%)
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GPT-5.1 Thinking
Reasoning23.7%
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5 Pro
0 providers
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GPT-5.1 Thinking
0 providers
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GPT-5 Pro
Avg Score:31.6%(+8.0%)
Providers:0
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GPT-5.1 Thinking
Avg Score:23.7%
Providers:0