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Claude Sonnet 4 vs o3-pro
Comprehensive side-by-side LLM comparison
Claude Sonnet 4 offers 28.0K more tokens in context window than o3-pro. Claude Sonnet 4 is $82.00 cheaper per million tokens. Claude Sonnet 4 is available on 4 providers. Both models have their strengths depending on your specific coding needs.
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Anthropic
Claude Sonnet 4 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 69.4% across 8 benchmarks. It excels particularly in MMMLU (86.5%), TAU-bench Retail (80.5%), GPQA (75.4%). 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-pro is a multimodal language model developed by OpenAI. 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.
19 days newer
Claude Sonnet 4
Anthropic
2025-05-22
o3-pro
OpenAI
2025-06-10
Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4
Input:$3.00
Output:$15.00($82.00 cheaper)
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o3-pro
Input:$20.00
Output:$80.00
Performance Metrics
Context window and performance specifications
Average performance across 8 common benchmarks
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Claude Sonnet 4
Average Score:69.4%(+69.4%)
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o3-pro
Average Score:0.0%
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Knowledge Cutoff
Training data recency comparison
o3-pro
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 Sonnet 4
4 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
Bedrock
Throughput: 101 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 Sonnet 4
Avg Score:69.4%(+69.4%)
Providers:4
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o3-pro
Avg Score:0.0%
Providers:1