Yesterday, xAI officially introduced its Grok 4.1 model, which is said to bring significant improvements to the real-world usability of Grok. According to Elon Musk, users should notice a significant increase in speed and quality.
Grok 4.1 just released.
You should notice a significant increase in speed and quality. https://t.co/1J8pvn3SsO
— Elon Musk (@elonmusk) November 17, 2025
Grok 4.1 model released
This latest model is said to be exceptionally capable in creative, emotional, and collaborative interactions. It is more perceptive to nuanced intent, compelling to speak with, and coherent in personality, while fully retaining the razor-sharp intelligence and reliability of its predecessors.
xAI revealed that it conducted a gradual, silent rollout of preliminary Grok 4.1 builds to a progressively larger share of production traffic across grok.com, X, and mobile apps. The company found out that compared to the previous production model in traffic, Grok 4.1 is preferred 64.78% of the time.
In LMArena’s Text Arena, Grok 4.1 Thinking model is revealed to hold the #1 overall position with 1483 Elo, while Grok 4.1 in its non-reasoning mode ranks #2 at 1465 Elo. Grok 4.1 model significantly surpasses Grok 4, which had an overall rank of #33. On the emotional intelligence benchmark, Grok 4.1 Thinking and Grok 4.1 models were also in the top positions. On the Creative Writing v3 benchmark, these models were in second and third position while early GPT 5.1 was at the top.
Apart from this, the company revealed that in Grok 4.1 post-training, they have focused on reducing factual hallucinations for information-seeking prompts. The hallucination rate for Grok 4.1 (non-reasoning) was 4.22% and FActScore was 2.97%.
Availability
Grok 4.1 is now available to all users for free on grok.com, X, and the iOS and Android apps. It is rolling out immediately in Auto mode and can be selected explicitly as “Grok 4.1” in the model picker.
