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Claude Sonnet 4.5 vs GPT-4.1
Comprehensive side-by-side LLM comparison
GPT-4.1 leads with 30.9% higher average benchmark score. GPT-4.1 offers 816.3K more tokens in context window than Claude Sonnet 4.5. GPT-4.1 is $8.00 cheaper per million tokens. Overall, GPT-4.1 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
GPT-4.1 is a multimodal language model developed by OpenAI. The model shows competitive results across 30 benchmarks. It excels particularly in MMLU (90.2%), CharXiv-D (87.9%), IFEval (87.4%). With a 1.1M token context window, it can handle extensive documents and complex multi-turn conversations. 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
GPT-4.1
OpenAI
2025-04-14
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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GPT-4.1
Input:$2.00
Output:$8.00($8.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 33 common benchmarks
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Claude Sonnet 4.5
Average Score:20.7%
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GPT-4.1
Average Score:51.6%(+30.9%)
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Knowledge Cutoff
Training data recency comparison
GPT-4.1
2024-06-01
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:20.7%
Providers:2
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GPT-4.1
Avg Score:51.6%(+30.9%)
Providers:1