What Grok Code Fast 1 launched with
The August 2025 release introduced a coding model and a limited-time promotion through partner clients.
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Grok Code Fast 1 launched on August 28, 2025 as a model for coding workflows that use tools such as terminals, file editing and search. xAI described its focus as fast, cost-conscious agentic coding [1].
The free offer had a time limit
The launch announcement listed GitHub Copilot, Cursor, Cline, Roo Code, Kilo Code, opencode and Windsurf as partners offering access free for a limited time [1].
Our original caption reflected that launch offer. It should not be treated as a permanent pricing promise for any of those products. Check the provider and client you intend to use before running a paid task.
Compare the workflow you actually use
xAI's announcement discusses both coding benchmarks and developer assessments of complete tasks. It also acknowledges that benchmark scores do not capture every part of the coding experience [1].
For your own comparison, use a small repository task with a known result. Check the diff, run the tests and record the client's total usage. Keep the model name and date with that record so a later model update does not get confused with the original release.