grok-3-fast API price comparison
Grok 3 Fast is an AI model provided by xai.
Cheapest overall
Qianduoduo
30.00 USD/M tokens combined per 1M tokens
Lowest input
Qianduoduo
5.00 USD/M tokens input per 1M tokens
Lowest output
Qianduoduo
25.00 USD/M tokens output per 1M tokens
Last refreshed
Sep 4, 2026
2 listed platforms
Best listed option
grok-3-fast is currently cheapest overall on Qianduoduo, with input at 5.00 USD/M tokens and output at 25.00 USD/M tokens per million tokens.
Pricing insight
Across 2 listed routes, grok-3-fast is cheapest overall on Qianduoduo at 30.00 USD/M tokens. The median combined price is 31.50 USD/M tokens, so the cheapest route is about 5% below the median listed route.
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Lowest total cost
Qianduoduo
Best first check for balanced coding-agent sessions: 30.00 USD/M tokens.
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Prompt-heavy work
Qianduoduo
Useful for large repositories and long context reads: 5.00 USD/M tokens input.
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Response-heavy work
Qianduoduo
Useful for long answers, edits, and agent loops: 25.00 USD/M tokens output.
Median combined price
31.50 USD/M tokens
Baseline for judging whether the cheapest route is unusually low.
Cache price coverage
50%
1 of 2 routes publish cache read or write prices.
Fresh rows
1/2
Routes crawled in the last 72 hours.
Use case fit
grok-3-fast from xAI can be compared by input, output, and combined per-million-token cost to select the most economical API route.
Platform price comparison
| Platform | Ratio | Input | Output | Total |
|---|---|---|---|---|
| Qianduoduo | 1.00x | 5.00 USD/M tokens | 25.00 USD/M tokens | 30.00 USD/M tokens |
| AIHubMix | 1.10x | 5.50 USD/M tokens | 27.50 USD/M tokens | 33.00 USD/M tokens |
FAQ
Where is grok-3-fast cheapest?
Qianduoduo has the lowest listed combined price at 30.00 USD/M tokens per 1M tokens.
What do input and output prices mean?
Input is charged for prompt tokens you send. Output is charged for tokens generated by the model.
How often are prices refreshed?
Prices are crawler-backed and this page was last refreshed Sep 4, 2026. Always confirm before large purchases.