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Claude Sonnet 4.5 vs o4-mini
Comprehensive side-by-side LLM comparison
o4-mini leads with 13.8% higher average benchmark score. o4-mini offers 36.0K more tokens in context window than Claude Sonnet 4.5. o4-mini is $12.50 cheaper per million tokens. Overall, o4-mini is the stronger choice for coding tasks.
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Anthropic
Claude Sonnet 4.5 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 75.8% across 9 benchmarks. It excels particularly in MMMLU (89.1%), AIME 2025 (87.0%), TAU-bench Retail (86.2%). It supports a 264K 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 2025, it represents Anthropic's latest advancement in AI technology.
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OpenAI
o4-mini is a multimodal language model developed by OpenAI. It achieves strong performance with an average score of 66.5% across 14 benchmarks. It excels particularly in AIME 2024 (93.4%), AIME 2025 (92.7%), MathVista (84.3%). 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.
5 months newer
o4-mini
OpenAI
2025-04-16
Claude Sonnet 4.5
Anthropic
2025-09-29
Pricing Comparison
Cost per million tokens (USD)
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Claude Sonnet 4.5
Input:$3.00
Output:$15.00
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o4-mini
Input:$1.10
Output:$4.40($12.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 18 common benchmarks
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Claude Sonnet 4.5
Average Score:37.9%
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o4-mini
Average Score:51.7%(+13.8%)
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Knowledge Cutoff
Training data recency comparison
o4-mini
2024-05-31
Claude Sonnet 4.5
2025-01-31
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 4.5
2 providers
Anthropic
Throughput: 42 tok/s
Latency: 0.4ms
ZeroEval
Throughput: 42 tok/s
Latency: 0.4ms
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Claude Sonnet 4.5
Avg Score:37.9%
Providers:2
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o4-mini
Avg Score:51.7%(+13.8%)
Providers:1