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Claude Opus 4 vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 2.3% higher average benchmark score. Claude Opus 4 offers 28.0K more tokens in context window than o3. o3 is $80.00 cheaper per million tokens. Claude Opus 4 is available on 4 providers. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Opus 4 was developed as the flagship model in the Claude 4 generation, designed to push the boundaries of AI capability in complex reasoning, analysis, and multi-step problem-solving. Built to handle the most demanding enterprise tasks, it represents Anthropic's highest tier of intelligence and capability.
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OpenAI
o3 represents the next generation in OpenAI's reasoning model series, developed to advance the capabilities of deliberate, step-by-step problem solving. Built to handle increasingly complex challenges across mathematics, science, and coding, it continues the evolution of reasoning-focused AI with improved analytical depth and accuracy.
1 month newer
o3
OpenAI
2025-04-16
Claude Opus 4
Anthropic
2025-05-22
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Pricing Comparison
Cost per million tokens (USD)
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Claude Opus 4
Input:$15.00
Output:$75.00
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o3
Input:$2.00
Output:$8.00($80.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 4 common benchmarks
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Claude Opus 4
Average Score:59.1%
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o3
Average Score:61.3%(+2.3%)
Performance comparison across key benchmark categories
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Claude Opus 4
Coding72.5%(+3.4%)
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o3
Coding69.1%
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Knowledge Cutoff
Training data recency comparison
o3
2024-05-31
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
4 providers
Anthropic
Throughput: 100 tok/s
Latency: 0.5ms
Bedrock
Throughput: 120 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Opus 4
Avg Score:59.1%
Providers:4
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o3
Avg Score:61.3%(+2.3%)
Providers:1