Grok 4.1
xai/grok-4.1Frontier capability with real-time grounding, answers informed by the live world.
256K ctx · Free
xAI
Real-time-grounded frontier models
Models
2
Founded
2023
Country
United States
San Francisco
xAI has been building models out of San Francisco, United States, since 2023. Webparam tracks two of its models, spanning language: free to call and reaching 2M.
Models
The xAI catalogue
Ordered by weekly usage on Webparam.
Grok 4.1 by xAI xAIOn request Grok 4 Fast by xAI xAIOn request Grok 4 Fast
xai/grok-4-fastTwo million tokens of context at commodity prices, long-context economics, reset.
2M ctx · Free
Recent releases
What shipped lately
History
xAI built one of the largest training clusters in existence and iterated Grok to the frontier at unusual speed. Its models are distinguished by real-time grounding and enormous fast-inference context, Grok 4 Fast's 2M-token window at commodity prices reset long-context economics.
xAI built one of the largest training clusters in existence and iterated Grok to the frontier at unusual speed. Its models are distinguished by real-time grounding and enormous fast-inference context, Grok 4 Fast's 2M-token window at commodity prices reset long-context economics.
Strengths
- Real-time information grounding
- 2M-token context at low cost (Fast line)
- Aggressive capability iteration
Use xAI models through Webparam
Every model above is callable through one OpenAI-compatible convention: change the model ID, keep the request.
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