model · xAI
Grok 4.3
Grok 4.3 is xAI's frontier model — a cheap, capable all-rounder (about $1.25 / $2.50 per 1M tokens) with a 1M-token context, always-on reasoning, and native video input. Its distinctive edge is live access to X (Twitter) data for up-to-the-minute answers. It is a closed cloud model. A 'fast' tier pushes the context to 2M tokens at an even lower price for high-volume, simple work.
What it can help with
- frontier model
- video input
- live twitter data
- large token context
- low per-token cost
- always-on reasoning
- high-volume tier