Comprehensive side-by-side LLM comparison
Claude Sonnet 4 leads with 27.7% higher average benchmark score. GPT-5 nano offers 200.0K more tokens in context window than Claude Sonnet 4. GPT-5 nano is $17.55 cheaper per million tokens. Claude Sonnet 4 is available on 4 providers. Overall, Claude Sonnet 4 is the stronger choice for coding tasks.
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.
OpenAI
GPT-5 nano is a multimodal language model developed by OpenAI. The model shows competitive results across 5 benchmarks. It excels particularly in AIME 2025 (85.2%), HMMT 2025 (75.6%), GPQA (71.2%). It supports a 528K 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 OpenAI's latest advancement in AI technology.
2 months newer
Claude Sonnet 4
Anthropic
2025-05-22
GPT-5 nano
OpenAI
2025-08-07
Cost per million tokens (USD)
Claude Sonnet 4
GPT-5 nano
Context window and performance specifications
Average performance across 11 common benchmarks
Claude Sonnet 4
GPT-5 nano
GPT-5 nano
2024-05-30
Available providers and their performance metrics
Claude Sonnet 4
Anthropic
Bedrock
ZeroEval
Claude Sonnet 4
GPT-5 nano
Claude Sonnet 4
GPT-5 nano
GPT-5 nano
OpenAI
ZeroEval