Grok 4.1 Blog

Grok 4.1 fast API

Grok 4.1 fast API

Grok 4.1 Fast is xAI’s production-focused large model, optimized for agentic tool-calling, long-context workflows, and low-latency inference. It’s a multimodal, two-variant family designed to run autonomous agents that search, execute code, call services, and reason over extremely large contexts (up to 2 million tokens).

Grok 4.1 Released: How It Crushes Other Models

Grok 4.1 Released: How It Crushes Other Models

xAI quietly released Grok 4.1 (Nov 17–18, 2025) — a focused upgrade to Grok 4 that prioritizes emotional intelligence, creative expression, and reduced

Grok 4.1 API

Grok 4.1 API

Grok 4.1 is xAI’s incremental upgrade to the Grok-4 family that xAI began rolling out in mid–late 2025. xAI presents Grok 4.1 as a release focused on improved conversational quality — notably emotional intelligence, creative writing, and responsiveness .