Context
2M
Max output
2M
Serving providers
1
Cheapest input
$0.20 /1M
Prices are on-demand list rates. Enterprise commitments (committed-use discounts, provisioned throughput, negotiated rates) can be materially lower.
Benchmarks
independent evaluations · source: Artificial AnalysisHeadline indices
Individual benchmarks · click a row for effort variants
| Benchmark | Best score | Effort | Cost / task | |
|---|---|---|---|---|
| CritPt | 0% | default | — | |
| GPQA Diamond | 64% | default | — | |
| Humanity's Last Exam | 5% | default | — | |
| IFBench | 36% | default | — | |
| IT-Bench SRE | 18% | default | — | |
| LiveCodeBench | 40% | default | — | |
| Long-Context Reasoning | 22% | default | — | |
| MMLU-Pro | 74% | default | — | |
| MMMU-Pro | 48% | default | — | |
| Omniscience | -51.0 | default | — | |
| SciCode | 30% | default | — | |
| TerminalBench Hard | 14% | default | — | |
| τ²-bench | 64% | default | — |
Pricing by serving provider
standard tier · per 1M tokens · click a provider to expand| Serving provider | Input /1M | Output /1M | Endpoints | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| xAICheapest | $0.20 | $0.50 | 1 | |||||||||||||||||||||
| ||||||||||||||||||||||||
Price history
input + output $/1M since we started tracking Input Output
Cost calculator
estimate your monthly spend on this model$80
estimated / month
Model IDs
copy the exact identifier for your platformxai/grok-4-1-fast
Frequently asked questions
Grok 4.1 Fast pricing, context and availabilityHow much does Grok 4.1 Fast cost?
Grok 4.1 Fast costs $0.20 per 1M input tokens and $0.50 per 1M output tokens at its cheapest provider via xAI.
What is the context window of Grok 4.1 Fast?
Grok 4.1 Fast accepts up to 2M tokens of context and can return up to 2M output tokens.
What can Grok 4.1 Fast do?
Grok 4.1 Fast supports image input (vision), tool use, reasoning, audio input, prompt caching, structured output and web search.
Other xAI models
compare pricing across the xAI lineupGrok 4$3.00/1M · 5 providersGrok 4.1 Fast Non Reasoning$0.20/1M · 3 providersGrok 4.1 Fast Reasoning$0.20/1M · 3 providersGrok 3 Mini$0.25/1M · 3 providersGrok 3$3.00/1M · 3 providersGrok 4 Fast Non Reasoning$0.20/1M · 2 providersGrok 4 Fast Reasoning$0.20/1M · 2 providersGrok Code Fast 1$0.20/1M · 2 providers
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