Pricing
Model Overview
Tracked token-pricing fields for this model family. Empty pricing fields stay hidden until the source publishes them.
| Price field | Value |
|---|---|
| Input | $0.20 / 1M tokens |
| Output | $0.50 / 1M tokens |
| Cached read | $0.05 / 1M tokens |
| Source | OpenRouter |
| Verified | Apr 5, 2026 (High) |
Surface
Capabilities
Input and output modalities, enabled feature flags, strengths, and tradeoffs.
| Attribute | Values |
|---|---|
| Modalities | textimagefile totext |
| Capabilities | reasoningimageInputpromptCachingfunctionCallingstructuredOutputs |
References
Official Links
Canonical launch, documentation, pricing, and release-note URLs.
| Reference | URL |
|---|---|
| Intro | https://openrouter.ai/x-ai/grok-4.1-fast |
| Docs | https://openrouter.ai/x-ai/grok-4.1-fast |
| Pricing | Verify current pricing on provider’s page → |
Coverage
Benchmark Coverage
Reported benchmark families, versions, scores, sources, and notes.
| Benchmark | Version | Score | Date | Source | Notes |
|---|
Lifecycle
Release History
Lifecycle transitions and release timeline for this model family.
| Release | Alias | Lifecycle | Release Date | Deprecation | Shutdown | Summary |
|---|---|---|---|---|---|---|
| Grok 4.1 Fast | x-ai-grok-4-1-fast | Active | Nov 19, 2025 | — | — | Model available via OpenRouter. |
Surfaces
Host Coverage
Provider-specific hosting, context, pricing notes, feature differences, and provider-status context.
| Host | Type | Context | Pricing Note | Differences |
|---|---|---|---|---|
| OpenRouter | aggregator | 2.0M | $0.20/1M in · $0.50/1M out via OpenRouter | — |
Migration
Migration Guidance
Documented migration summary, successor families, and known breaking changes.
| Topic | Details |
|---|---|
| Summary |
Timeline
Change Events
Cataloged model-family updates and source references.
| Date | Type | Title | Description | Source |
|---|---|---|---|---|
| Nov 19, 2025 | family_added | Grok 4.1 Fast published | Model made available via OpenRouter. | OpenRouter |
From xAI
