Capability badges appear only where the provider catalog explicitly lists support. A blank cell means the source is silent, not that the feature is absent.
Listed rates
Price across providers
Input price per million tokens as published by each provider. Bars are drawn from listed rates only — no traffic weighting, since the catalog observes no requests.
Lowest input$0.2/M
Across 1 priced provider
Median input$0.2/M
Midpoint of listed rates
Highest input$0.2/M
Same as the lowest listed rate
Output range$0.5 – $0.5
Per million output tokens
Ofox$0.2/MLowest
Cost calculator
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$0.00
Excludes taxes, non-token charges, and tiered discounts.
Specification
Capabilities
Recorded from the source catalog and provider listings.
Every result stays attached to its source, version, metric and harness. Scores from different versions are never merged, and the profile below plots each benchmark against its own population rather than on a shared scale.
ModelBench does not infer quality from price, context size, or model name. When a source publishes a comparable result, it appears here with its version and link.
Answered directly from the stored record — nothing here is generated beyond the catalog's own fields.
What is Grok 4.1 Fast?
xAI's fast agentic tool-calling model with a 2M context window; non-reasoning variant for low-latency responses. It is published by xAI and catalogued here from Models.dev.
How much does Grok 4.1 Fast cost?
Listed input pricing starts at $0.2 per million tokens from Ofox.
What is the context length of Grok 4.1 Fast?
Grok 4.1 Fast accepts up to 2M tokens of context and returns up to 30K output tokens.
Does Grok 4.1 Fast support tool calling and structured output?
Provider catalogs list support for tool calling, structured output, and image input.
Which providers serve Grok 4.1 Fast?
1 provider list this model: Ofox.
Are the weights for Grok 4.1 Fast open?
No. This model is served through hosted APIs only.
When was Grok 4.1 Fast released?
The catalog records a release date of 2025-11-19, last verified Aug 08, 2026.
Ofox