Reasoning Tools JSON

xAI's frontier model for long-running agents, coding, knowledge work, and visual projects

xai/grok-4.6 2026-08-12 500K context $2/M input $6/M output
27 providers
Reasoning Tools JSON

xAI's default Grok for chat, coding, agentic tools, and lower hallucination risk

xai/grok-4.3 2026-04-17 1M context $1.25/M input $2.5/M output
28 providers
Reasoning Tools JSON

Reasoning Grok for document-heavy analysis and long-horizon tool use

xai/grok-4.20-0309-reasoning 2026-03-09 1M context $1.25/M input $2.5/M output
9 providers
Reasoning Tools JSON

xAI's fast agentic tool-calling model with a 2M context window and built-in reasoning

xai/grok-4.1-fast-reasoning 2025-11-19 2M context $0.2/M input $0.5/M output
4 providers