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GPT-5 vs GPT-5.1
Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5, released by OpenAI on August 7, 2025, is a large language model that combines direct generation and extended reasoning in a single unified system with a built-in routing mechanism. It features a 400K token context window, 128K maximum output tokens, native multimodal support (text, image, audio, video), and demonstrated strong results across coding, mathematics, visual understanding, and health benchmarks at release. GPT-5 targets complex multi-step tasks including advanced coding, mathematical problem solving, and long-context analysis.
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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.
2 months newer
GPT-5
OpenAI
2025-08-07
GPT-5.1
OpenAI
2025-11
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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GPT-5
Average Score:71.3%(+0.0%)
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GPT-5.1
Average Score:71.2%
Performance comparison across key benchmark categories
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GPT-5
Science87.3%
Multimodal78.4%(+2.4%)
Coding74.9%
Tool Use44.5%
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Knowledge Cutoff
Training data recency comparison
GPT-5
2025-05
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
1 providers
OpenAI
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GPT-5.1
0 providers
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GPT-5
Avg Score:71.3%(+0.0%)
Providers:1
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GPT-5.1
Avg Score:71.2%
Providers:0