A blazing fast variant for instant, cost-effective answers without reasoning traces. Built on the same Grok 4 Fast backbone for unified quality and efficiency, it excels at search, summarization, Q&A, and lightweight agent use. Delivers low latency, reduced token cost, and supports the 2M token context for long inputs. Perfect for rapid and scalable information workflows.
Retired on Aug 22, 2026: requests to this model ID now return an error. These models are live and work with the same API key.
A blazing fast variant for instant, cost-effective answers without reasoning traces. Built on the same Grok 4 Fast backbone for unified quality and efficiency, it excels at search, summarization, Q&A, and lightweight agent use. Delivers low latency, reduced token cost, and supports the 2M token context for long inputs.
No. Grok 4 Fast Non-Reasoning was retired on NagaAI on Aug 22, 2026, and requests to it now return an error. Live models you can use instead with the same API key: Grok 4.7, Grok 4.6 and Grok 4.5.
It takes text and images as input and returns text.
