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x-AI/Grok-4.1-Fast
xai·xai/grok-4.1-fast·GA·Closed
Fast Grok model for responsive chat, reasoning, and tool-assisted work
At a glance
Reference pricePrice undisclosed
Lowest paidNo paid channels
Context2,000,000
Output limit2,000,000
Capabilities
✓ Reasoning✓ Tool useStructured output✓ TemperatureAttachments
Modalities
Text
Knowledge cutoff—
Released / updated2025-11-20 / 2025-11-20
Quality & performance
Artificial Analysis doesn't cover this model (267 of 2059 have data). Quality data comes from independent evals covering widely used models.
Available at 1 providers0 with public prices
| Provider | Tier | Input | Output | Cache read | Cache write | Context | Output limit | Status |
|---|---|---|---|---|---|---|---|---|
| Qiniu | Gateway | — | — | — | — | 2,000,000 | 2,000,000 | hostTable.undisclosed |
Sorted by blended price (input×0.75 + output×0.25) asc. The official channel always shows regardless of rank. Whether a gateway's low price is actually usable can't be verified.
Your usage cost
This model has no public prices; can't estimate.
Benchmark
No upstream benchmark data for this model. For quality, see the Artificial Analysis intelligence score above.
Reasoning control
Upstream provides no control info
1 / 1 providers expose no reasoning control (reasoning_options: []).
Price historyone sample accumulated per data sync
Input listOutput listMin blended