This model was retired on 2026-05-15. The pricing below is the last-known rate, kept for migration reference.
Grok 4.1 Fast Reasoning LatestDeprecated
VisionTool useReasoningAudioPrompt cachingStructured outputWeb search
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.
Pricing by serving provider
last-known · per 1M tokens · click a provider to expand| Serving provider | Input /1M | Output /1M | Endpoints | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| xAI | $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-reasoning-latest
Frequently asked questions
Grok 4.1 Fast Reasoning Latest pricing, context and availabilityIs Grok 4.1 Fast Reasoning Latest still available?
Grok 4.1 Fast Reasoning Latest was retired on 2026-05-15. The pricing on this page is the last-known rate, kept for migration reference.
How much did Grok 4.1 Fast Reasoning Latest cost?
Grok 4.1 Fast Reasoning Latest's last-known pricing, before it was retired on 2026-05-15, was $0.20 per 1M input tokens and $0.50 per 1M output tokens.
What was the context window of Grok 4.1 Fast Reasoning Latest?
Grok 4.1 Fast Reasoning Latest had a 2M token context window and could return up to 2M output tokens.
What could Grok 4.1 Fast Reasoning Latest do?
Grok 4.1 Fast Reasoning Latest supported image input (vision), tool use, reasoning, audio input, prompt caching, structured output and web search.
Other xAI models
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