Comprehensive side-by-side LLM comparison
Claude Opus 4 leads with 56.8% higher average benchmark score. Claude Opus 4 offers 62.0K more tokens in context window than Grok Code Fast 1. Grok Code Fast 1 is $88.30 cheaper per million tokens. Claude Opus 4 supports multimodal inputs. Claude Opus 4 is available on 4 providers. Overall, Claude Opus 4 is the stronger choice for coding tasks.
Anthropic
Claude Opus 4 is a multimodal language model developed by Anthropic. It achieves strong performance with an average score of 64.6% across 9 benchmarks. It excels particularly in MMMLU (88.8%), TAU-bench Retail (81.4%), GPQA (79.6%). 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 Code Fast 1 is a language model developed by xAI. It achieves strong performance with an average score of 70.8% across 1 benchmarks. Notable strengths include SWE-Bench Verified (70.8%). It supports a 266K token context window for handling large documents. The model is available through 1 API provider. Released in 2025, it represents xAI's latest advancement in AI technology.
3 months newer
Claude Opus 4
Anthropic
2025-05-22
Grok Code Fast 1
xAI
2025-08-28
Cost per million tokens (USD)
Claude Opus 4
Grok Code Fast 1
Context window and performance specifications
Average performance across 9 common benchmarks
Claude Opus 4
Grok Code Fast 1
Available providers and their performance metrics
Claude Opus 4
Anthropic
Bedrock
ZeroEval
Claude Opus 4
Grok Code Fast 1
Claude Opus 4
Grok Code Fast 1
Grok Code Fast 1
xAI