Grok 4.1 Fast Reasoning

Fast reasoning model with a 2M-token context, built for frontier tool calling. $0.20/M input, $0.5/M output.

Understands

text

This model cannot see images or video — you can only give it text. That matters if you planned to show it screenshots or documents with pictures.

Produces

text, code

Contents verified with the vendor: 2026-08-18

Included in subscriptions

No catalogue entry marks this model as part of a plan yet. It will appear here once the plan contents are confirmed with the vendor.