Last refreshed 2026-07-09. Next refresh: weekly.
Why use Grok 4.1 Fast on OpenRouter?
OpenRouter offers Grok 4.1 Fast with pay-as-you-go pricing at $0.20/1M input tokens. OpenRouter is a multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.
Compare Grok 4.1 Fast across 2 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: x-ai/grok-4.1-fastModel ID
x-ai/grok-4.1-fastRequest example
Curated snippets for this provider are not sourced yet. Use OpenRouter documentation with model ID
x-ai/grok-4.1-fast.Gotchas
- Use provider model ID "x-ai/grok-4.1-fast", 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 | $1.25 | $2.50 |
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