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Claude Opus 4.6 vs o3 mini
Comprehensive side-by-side LLM comparison
Claude Opus 4.6 leads with 82.5% higher average benchmark score. Claude Opus 4.6 offers 28.0K more tokens in context window than o3 mini. o3 mini is $24.50 cheaper per million tokens. Claude Opus 4.6 supports multimodal inputs. 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
OpenAI o3 mini, released by OpenAI in January 2025, is a compact reasoning model from the o3 family designed for efficient, cost-effective STEM problem-solving. It features a 200K token context window and adjustable chain-of-thought effort settings, allowing developers to trade reasoning depth for speed. o3 mini targets science, mathematics, and coding applications where lower inference cost and faster response times are a priority.
1 year newer
o3 mini
OpenAI
2025-01-31
Claude Opus 4.6
Anthropic
2026-02
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.6
Input:$5.00
Output:$25.00
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o3 mini
Input:$1.10
Output:$4.40($24.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Opus 4.6
Average Score:84.0%(+82.5%)
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o3 mini
Average Score:1.5%
Performance comparison across key benchmark categories
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Claude Opus 4.6
Agents84.0%(+82.5%)
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o3 mini
Agents1.5%
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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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o3 mini
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Claude Opus 4.6
Avg Score:84.0%(+82.5%)
Providers:3
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o3 mini
Avg Score:1.5%
Providers:1