Grok 3 Fast: API pricing, providers and specs
Textby xAI
Grok 3 Fast is a text model by xAI. One provider serves it: AIHubMix, at $27.50 /1M.
A newer version is out: Grok 4.1 Fast · released Nov 19, 2025
Lowest price$27.50/1Mat AIHubMix
Maker's price—The maker does not sell it
Providers1
Context—
How Grok 3 Fast compares
Against the 737 text models on the site priced the same way.
- Pricey for its class: at $27.50 /1M, its lowest price is above 95% of comparable models (median $1.10).
- 1 providers serve it; 0% of comparable models have fewer.
Grok 3 Fast prices by provider
Every provider's list price, read from its own price page or API. A price marked “from” changes with context length, resolution or mode.
| Provider | Input | Output | Prompt caching | Context |
|---|---|---|---|---|
 AIHubMix | $5.50/1M | $27.50/1M | — | — |
Prices in US dollars, updated daily from each provider. Prices last checked Oct 25, 2026.
Specs
- Type
- Text
- Maker
- xAI
- Inputs
- Text
- Outputs
- Text
- Context
- —
- Max output
- —
- Capabilities
- —
- Released
- —
- License
- —
- Open weights
- —
Alternatives to Grok 3 Fast
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Grok 3 Fastthis model | $27.50/1M | — | — | 1 |
| GPT-6 Astra | $25/1M | 1.05M | 1775 | 31 |
 Muse Wonder | $16/1M | 1.05M | — | 14 |
| Claude Opus 5.5 | $16/1M | 1M | 1807 | 33 |
| Claude-Sonnet-3.5 | $15/1M | — | 1298 | 1 |
| Claude Opus 5 | $20/1M | 1M | 1690 | 32 |
| GPT-4 | $60/1M | 8K | 1206 | 5 |
| Claude Sonnet 4.6 | $12/1M | 1M | 1523 | 31 |
| Claude Fable 5 | $40/1M | 1M | 1624 | 30 |
More from xAI
Grok 4.7xAI$4.80/1MGrok Build 0.1xAI$1.60/1MGrok 3xAI$15/1MGrok 4.6xAI$4.80/1MGrok 4.20xAI$2.50/1MGrok-4xAI$14.25/1MGrok 4.5xAI$3.20/1MGrok Voice TTS 1.0xAI$0.015/1K chars
All 41 xAI modelsGrok 3 Fast FAQ
The lowest price for Grok 3 Fast is $27.50 /1M, at AIHubMix.
We have not found Grok 3 Fast's weights published by its maker.
1 API providers serve Grok 3 Fast. Compare their prices above, or open a provider to see everything it offers.
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