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Claude Opus 4 vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 33.5% 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. Overall, o3 is the stronger choice for coding tasks.
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Anthropic
Claude Opus 4 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 64.6% across 9 benchmarks. It excels particularly in MMMLU (88.8%), TAU-bench Retail (81.4%), GPQA (79.6%). It supports a 328K token context window for handling large documents. The model is available through 4 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents Anthropic's latest advancement in AI technology.
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OpenAI
o3 is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 67.5% across 22 benchmarks. It excels particularly in COLLIE (98.4%), AIME 2024 (91.6%), ARC-AGI (88.0%). It supports a 300K token context window for handling large documents. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents OpenAI's latest advancement in AI technology.
1 month newer
o3
OpenAI
2025-04-16
Claude Opus 4
Anthropic
2025-05-22
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 27 common benchmarks
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Claude Opus 4
Average Score:21.5%
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o3
Average Score:55.0%(+33.5%)
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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:21.5%
Providers:4
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o3
Avg Score:55.0%(+33.5%)
Providers:1