Last refreshed 2026-10-18. Next refresh: weekly.
Why use Grok 4.1 Fast on xAI Console?
xAI Console offers Grok 4.1 Fast. xAI, founded by Elon Musk in March 2023, focuses on advancing scientific discovery and understanding the universe through AI.
Compare Grok 4.1 Fast across 5 providers to find the best fit for your use caseInput / 1M
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Output / 1M
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Cache
Not sourced
Batch
Not sourced
Setup recipe
Docs fallbackInstall
Use the provider REST API or SDKAuth
Create a provider API keyCall
model: grok-4-1-fast-reasoningModel ID
grok-4-1-fast-reasoningRequest example
Curated snippets for this provider are not sourced yet. Use xAI Console documentation with model ID
grok-4-1-fast-reasoning.Gotchas
- Use provider model ID "grok-4-1-fast-reasoning", not the LLMReference slug "grok-4.1-fast".
Compare Grok 4.1 Fast Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| OpenRouter | $0.20 | $0.50 |
| xAI Console | — | — |
| Microsoft Foundry | $0.20 | $0.50 |
| GCP Vertex AI | $0.20 | $0.50 |
| Vercel AI Gateway | $0.20 | $0.50 |
Capabilities
VisionMultimodalReasoningJSON / Tool useStructured Outputs
About Grok 4.1 Fast
Ultra-low latency Grok 4.1 Fast API family. xAI retired grok-4-1-fast-reasoning and grok-4-1-fast-non-reasoning on 2026-05-15; requests now redirect to Grok 4.3 at Grok 4.3 pricing.
Get Started
Model Specs
Released2025-11-19
Context2M