Comprehensive side-by-side LLM comparison
Claude Sonnet 4 leads with 8.8% higher average benchmark score. Claude Sonnet 4 offers 64.0K more tokens in context window than Grok-4. Both models have similar pricing. 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.
xAI
Grok-4 is a multimodal language model developed by xAI. It achieves strong performance with an average score of 63.1% across 7 benchmarks. It excels particularly in AIME 2025 (91.7%), HMMT25 (90.0%), GPQA (87.5%). 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 xAI's latest advancement in AI technology.
1 month newer
Claude Sonnet 4
Anthropic
2025-05-22
Grok-4
xAI
2025-07-09
Cost per million tokens (USD)
Claude Sonnet 4
Grok-4
Context window and performance specifications
Average performance across 13 common benchmarks
Claude Sonnet 4
Grok-4
Grok-4
2024-12-31
Available providers and their performance metrics
Claude Sonnet 4
Anthropic
Bedrock
ZeroEval
Claude Sonnet 4
Grok-4
Claude Sonnet 4
Grok-4
Grok-4
xAI
ZeroEval