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Grok 4.1 Fast Reasoning

xAI's most cost-effective reasoning model, featuring strong tool-calling capabilities and efficient knowledge base synthesis.

Providers
Capabilities
Google
vertex-byok
$0
$0
Unavailable
Usage analytics

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API & code
Uptime & Health
No uptime data yet

These providers haven't been health-probed for this model yet. The router still routes around upstreams that fail live requests — uptime fills in once probe history accrues.

Share cards
Grok 4.1 Fast Reasoning share card
Grok 4.1 Fast Reasoning
Google upstream share card
Google upstream
Credits
Use your own key

Run Grok 4.1 Fast Reasoning on your own key — your requests are billed by the provider. Pool callers pay AnyRouter credits.

No BYOK keys configured for this model yet.

Share a key with the pool to earn credits for every request it serves, covering your plan cost.

Text generation
Context length131,072 tokens
Max output104,857 tokens
ArchitectureTransformer
Categorytext
ReleasedMay 31, 2026
Modalities
Capabilities