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Claude Opus 4.1 vs o3 mini
Comprehensive side-by-side LLM comparison
Both models show comparable benchmark performance. o3 mini offers 68.0K more tokens in context window than Claude Opus 4.1. o3 mini is $84.50 cheaper per million tokens. Claude Opus 4.1 supports multimodal inputs. Claude Opus 4.1 is available on 3 providers. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Opus 4.1, released by Anthropic in August 2025, is a large language model from the Claude 4 family optimized for demanding reasoning, multi-step coding, and extended analysis tasks. It features a 200K token context window, 32K maximum output tokens, native image understanding, and extended thinking capabilities. Opus 4.1 targets complex problem-solving, multi-turn reasoning workflows, and applications requiring deep analysis with integrated tool use.
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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.
6 months newer
o3 mini
OpenAI
2025-01-31
Claude Opus 4.1
Anthropic
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4.1
Input:$15.00
Output:$75.00
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o3 mini
Input:$1.10
Output:$4.40($84.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Claude Opus 4.1
Average Score:0.9%
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o3 mini
Average Score:1.5%(+0.6%)
Performance comparison across key benchmark categories
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Claude Opus 4.1
Agents0.9%
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o3 mini
Agents1.5%(+0.6%)
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Knowledge Cutoff
Training data recency comparison
Claude Opus 4.1
2025-01
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 4.1
3 providers
Anthropic
AWS Bedrock
Google Cloud Vertex AI
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o3 mini
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Claude Opus 4.1
Avg Score:0.9%
Providers:3
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o3 mini
Avg Score:1.5%(+0.6%)
Providers:1