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Claude Opus 4.6 vs GPT-5.1
Comprehensive side-by-side LLM comparison
Claude Opus 4.6 leads with 6.9% higher average benchmark score. Claude Opus 4.6 is available on 3 providers. Overall, Claude Opus 4.6 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4.6, released by Anthropic in February 2026, is a large language model from the Claude 4 family designed for complex agent orchestration, extended reasoning, and long-form code generation. It features a 200K token context window (extendable to 1M tokens in beta), 128K maximum output tokens, native image understanding, and extended thinking with both standard and adaptive effort modes. Opus 4.6 targets multi-step agentic workflows, parallel tool use, and applications requiring sustained reasoning over large contexts.
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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.
3 months newer
GPT-5.1
OpenAI
2025-11
Claude Opus 4.6
Anthropic
2026-02
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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Claude Opus 4.6
Average Score:72.9%(+6.9%)
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GPT-5.1
Average Score:66.1%
Performance comparison across key benchmark categories
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Claude Opus 4.6
Science91.3%(+3.2%)
Coding80.8%(+4.5%)
Finance60.1%(+4.8%)
Tool Use59.5%(+15.0%)
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.6
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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Claude Opus 4.6
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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GPT-5.1
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Claude Opus 4.6
Avg Score:72.9%(+6.9%)
Providers:3
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GPT-5.1
Avg Score:66.1%
Providers:0