Comprehensive side-by-side LLM comparison
Grok 4.1 Fast offers 1.8M more tokens in context window than Llama 4 Behemoth. Both models have similar pricing. Both models have their strengths depending on your specific coding needs.
xAI
Grok 4.1 Fast, released by xAI in November 2025, is a fast-response variant from the Grok 4 family featuring a 2M token context window designed for high-throughput applications. It omits thinking tokens for immediate responses, reducing latency while maintaining strong output quality. Grok 4.1 Fast targets production APIs, real-time assistants, and cost-sensitive applications requiring long-context understanding at high volume.
Meta AI
Llama 4 Behemoth is a research-scale Mixture-of-Experts language model with approximately 2 trillion total parameters (288 billion active per inference), developed by Meta as a teacher model for the Llama 4 family. Available only in limited preview, it serves as the knowledge distillation source for Llama 4 Scout and Maverick. Behemoth targets research applications requiring the largest-scale open-weight model architecture from the Llama 4 generation.

Grok 4.1 Fast
xAI
2025-11-17
Cost per million tokens (USD)
Grok 4.1 Fast
Llama 4 Behemoth
Context window and performance specifications
Available providers and their performance metrics
Grok 4.1 Fast
xAI
Llama 4 Behemoth
Grok 4.1 Fast
Llama 4 Behemoth
Grok 4.1 Fast
Llama 4 Behemoth
Together AI