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GPT-5.1 Instant vs GPT-5.1 Thinking
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-5.1 Instant, released by OpenAI in November 2025, is a low-latency variant from the GPT-5.1 family optimized for fast response times and high-throughput workloads. It targets real-time applications, conversational assistants, and production APIs where response speed is a primary requirement alongside GPT-5.1-generation reasoning quality.
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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.
Launched on the same date
GPT-5.1 Instant
OpenAI
2025-11
GPT-5.1 Thinking
OpenAI
2025-11
Average performance across 1 common benchmarks
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GPT-5.1 Instant
Average Score:76.3%
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GPT-5.1 Thinking
Average Score:76.3%
Performance comparison across key benchmark categories
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GPT-5.1 Instant
Coding76.3%
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GPT-5.1 Thinking
Coding76.3%
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.1 Instant
0 providers
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GPT-5.1 Thinking
0 providers
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GPT-5.1 Instant
Avg Score:76.3%
Providers:0
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GPT-5.1 Thinking
Avg Score:76.3%
Providers:0