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Claude Opus 4.1 vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 13.9% higher average benchmark score. o3 offers 68.0K more tokens in context window than Claude Opus 4.1. o3 is $40.00 cheaper per million tokens. Claude Opus 4.1 is available on 3 providers. Overall, o3 is the stronger choice for coding tasks.
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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, released by OpenAI in April 2025, is a large reasoning model that applies extended chain-of-thought processing to deliver improved performance on complex math, science, and coding tasks. It features a 200K token context window and native image understanding, with demonstrated strong results on mathematics and software engineering benchmarks. o3 targets demanding analytical and engineering tasks where deliberate, multi-step reasoning produces significantly better outcomes than direct generation.
3 months newer
o3
OpenAI
2025-04-16
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
Input:$10.00
Output:$40.00($40.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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Claude Opus 4.1
Average Score:41.1%
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o3
Average Score:55.0%(+13.9%)
Performance comparison across key benchmark categories
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Claude Opus 4.1
Science80.9%(+11.8%)
Tool Use40.9%
Agents43.6%(+12.8%)
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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
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Claude Opus 4.1
Avg Score:41.1%
Providers:3
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o3
Avg Score:55.0%(+13.9%)
Providers:1