Comprehensive side-by-side LLM comparison
Grok 4 Fast leads with 38.8% higher average benchmark score. Grok 4 Fast offers 1.4M more tokens in context window than Nova Pro. Grok 4 Fast is $3.30 cheaper per million tokens. Overall, Grok 4 Fast is the stronger choice for coding tasks.
xAI
Grok 4 Fast is a multimodal language model developed by xAI. It achieves strong performance with an average score of 73.0% across 7 benchmarks. It excels particularly in SimpleQA (95.0%), HMMT 2025 (93.3%), AIME 2025 (92.0%). With a 2.0M 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 xAI's latest advancement in AI technology.
Amazon
Amazon Nova Pro was developed as the flagship model in the Nova family, designed to provide advanced multimodal understanding across text, images, and other modalities. Built to handle complex tasks requiring sophisticated reasoning, it represents Amazon's most capable offering for enterprise applications.
9 months newer

Nova Pro
Amazon
2024-11-20

Grok 4 Fast
xAI
2025-08-28
Cost per million tokens (USD)

Grok 4 Fast

Nova Pro
Context window and performance specifications
Average performance across 1 common benchmarks

Grok 4 Fast

Nova Pro
Available providers and their performance metrics

Grok 4 Fast
xAI

Nova Pro

Grok 4 Fast

Nova Pro

Grok 4 Fast

Nova Pro
Bedrock