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Claude 3.5 Sonnet vs o3
Comprehensive side-by-side LLM comparison
o3 leads with 24.3% higher average benchmark score. Claude 3.5 Sonnet offers 100.0K more tokens in context window than o3. o3 is $8.00 cheaper per million tokens. Overall, o3 is the stronger choice for coding tasks.
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Anthropic
Claude 3.5 Sonnet is a multimodal language model developed by Anthropic. This model demonstrates exceptional performance with an average score of 84.1% across 9 benchmarks. It excels particularly in GSM8k (96.4%), BIG-Bench Hard (93.1%), HumanEval (92.0%). It supports a 400K token context window for handling large documents. The model is available through 2 API providers. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, 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.
9 months newer
Claude 3.5 Sonnet
Anthropic
2024-06-21
o3
OpenAI
2025-04-16
Pricing Comparison
Cost per million tokens (USD)
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Claude 3.5 Sonnet
Input:$3.00
Output:$15.00
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o3
Input:$2.00
Output:$8.00($8.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 30 common benchmarks
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Claude 3.5 Sonnet
Average Score:25.2%
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o3
Average Score:49.5%(+24.3%)
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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 3.5 Sonnet
2 providers
Bedrock
Throughput: 101 tok/s
Latency: 0.5ms
Throughput: 42 tok/s
Latency: 0.4ms
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Claude 3.5 Sonnet
Avg Score:25.2%
Providers:2
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o3
Avg Score:49.5%(+24.3%)
Providers:1