xAI
Grok 4.2 Fast Non Reasoning
Fast Grok model for responsive chat, reasoning, and tool-assisted work
Model facts
- Context window
- 2M tokens
- Maximum output
- 3K tokens
- Cheapest paid input
- $3 per 1M tokens
- Cheapest paid output
- $9 per 1M tokens
- Open weights
- no
- Providers
- 1
Capabilities and modalities
tool calling, attachments, temperature control, text, image, video.
Observed price history
- 2026-08-24: $3 input / $9 output per 1M tokens
API providers
- ZenMux — model id x-ai/grok-4.2-fast-non-reasoning; $3 input / $9 output per 1M tokens; provider documentation