Last refreshed 2026-10-18. Next refresh: weekly.
Why use Grok 4.1 Fast on Microsoft Foundry?
Microsoft Foundry offers Grok 4.1 Fast with pay-as-you-go pricing at $0.20/1M input tokens. Microsoft Foundry is a unified Azure platform-as-a-service offering for enterprise AI operations, model builders, and application development.
Compare Grok 4.1 Fast across 5 providers to find the best fit for your use caseInput / 1M
$0.20
Output / 1M
$0.50
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 Microsoft Foundry 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 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.20 |
| Output tokens | $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