Grok 4 Fast Reasoning pricing
If you are budgeting for Grok 4 Fast Reasoning, start with the numbers below. We index 2 provider prices. Cheapest input is $0.200 per million tokens. Cheapest output is $0.500 per million tokens. The model lists a 131K context window in our data.
Pricing across providers
All figures are list prices per million tokens unless a column says otherwise. 2 offers are listed for Grok 4 Fast Reasoning. Best input in this view: Azure.
| Provider | Input / 1M | Output / 1M | Cached input | Batch |
|---|---|---|---|---|
A Azure | $0.200 | $0.500 | — | — |
X xAInative | $1.25 | $2.50 | $0.200 | — |
Input vs output · per provider
Pricing history
If you only care about current multi seller rates, use the pricing section. This timeline is for the official listing history. The native listing moved from $0.200 in and $0.500 out to $1.25 in and $2.50 out in the latest window.
Since Aug 30, 2026
$1.25 in · $2.50 out(current listing)
Output rate +400% vs previous period
Apr 7, 2026 → Aug 30, 2026
$0.200 in · $0.500 out
Cost calculator
Pick any of the providers above and type how many tokens you expect per day, week, or year. We turn that into rough dollar totals for Grok 4 Fast Reasoning.
Provider
0.020000¢ / req
0.025000¢ / req
Model specifications
Context length, caps, and capability flags for Grok 4 Fast Reasoning. Values follow the main provider (xAI) record in our index.
- Context window
- 131,072 tokens
- Max output
- 131,072 tokens
- Vision (images)
- No
- Tool / function calling
- Yes
- Streaming
- No
- Released
- N/A
- Primary provider
- xAI
- Model family
- N/A
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Frequently asked questions
Read these after the table if you want plain language around Grok 4 Fast Reasoning rates.
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