Grok 4 Fast pricing
Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Read more about the model... This page tracks 1 listing in total. Highlighted lows are $0.200 per million input and $0.500 per million output (see table for which seller matches each).
Pricing across providers
Every row is a seller of Grok 4 Fast with token pricing we track. The cheapest input in this snapshot is from Openrouter. The bar chart shows the same input and output dollars per million for a quick scan.
| Provider | Input / 1M | Output / 1M | Cached input | Batch |
|---|---|---|---|---|
O Openrouter | $0.200 | $0.500 | — | — |
Input vs output · 1M tokens
Cost calculator
Pick any provider row and type how many tokens you expect per day, week, or year. We turn that into rough dollar totals for Grok 4 Fast.
0.020000¢ / req
0.025000¢ / req
Model specifications
Quick spec sheet for Grok 4 Fast before you dive back into pricing. Reported under Xai.
- Context window
- 2,000,000 tokens
- Max output
- 30,000 tokens
- Vision (images)
- Yes
- Tool / function calling
- Yes
- Streaming
- Yes
- Released
- Sep 2025
- Primary provider
- Xai
- Model family
- N/A
Compare Grok 4 Fast
Jump into a comparison when you want one table for two models instead of two tabs. 6 curated matches for Grok 4 Fast.
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Frequently asked questions
Read these after the table if you want plain language around Grok 4 Fast rates. The short model note from our index: Grok 4 Fast is xAI's latest multimodal model with SOTA cost-efficiency and a 2M token context window. It comes in two flavors: non-reasoning and reasoning. Read more about the model...
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