Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...
Tested on 3 benchmarks. Top scores: Artificial Analysis — Agentic Index (49.3%), Artificial Analysis — Quality Index (38.6%), Artificial Analysis — Coding Index (30.9%).
Artificial Analysis Agentic Index. Composite score measuring agent capability across tool use and planning tasks.
Artificial Analysis Quality Index. Composite quality score combining multiple benchmark results into a single metric.
Artificial Analysis Coding Index. Composite coding quality score from multiple code benchmarks.
- Typemultimodal
- Context2.0M tokens (~1,000 books)
- ReleasedNov 2025
- LicenseProprietary
- StatusActive
- Cost / Message~$0.001
Frequently Asked Questions
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- Grok 4.1 Fast by xAI. Not enough public benchmark scores to rank yet.
- List price $0.20 input · $0.50 output per 1M tokens (as of 2026-05-03).
How to cite · data as of 2026-05-03
Grok 4.1 Fast · benchmarks, pricing and providers. BenchGecko, data as of 2026-05-03. https://benchgecko.ai/model/grok-4-1-fast
Credit "Source: BenchGecko" with a link. Prices per provider and Gecko Tests are BenchGecko data (CC BY 4.0); benchmark scores keep their original source, listed in the JSON. JSON · llms.txt · MCP