Grok 4.1 Fast (Reasoning): API pricing, providers and specs
Grok 4.1 Fast (Reasoning) is a text model by xAI. 8 providers serve it, from $0.475 to $0.50 /1M; the lowest price is at Jiekou.AI.
How Grok 4.1 Fast (Reasoning) compares
Against the 737 text models on the site priced the same way.
- Cheap for its class: at $0.475 /1M, its lowest price undercuts 67% of comparable models (median $1.10).
- Its 2M-token context window is larger than 99% of them (median 262K), about 3000 pages of text.
- 8 providers serve it; 73% of comparable models have fewer.
Grok 4.1 Fast (Reasoning) 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 |
|---|---|---|---|---|
 Jiekou.AI | $0.19/1M | $0.475/1M | — | — |
 Vertex | $0.20/1M | From$0.50/1M | $0.05/1M | — |
 Helicone | $0.20/1M | From$0.50/1M | $0.05/1M | — |
| DevPass (LLM Gateway) | $0.20/1M | From$0.50/1M | — | — |
 LaoZhang API | $0.20/1M | $0.50/1M | — | — |
 CrazyRouter | $0.20/1M | $0.50/1M | — | — |
 AIHubMix | $0.20/1M | $0.50/1M | $0.05/1M | 1M |
 Requesty | $0.20/1M | From$0.50/1M | $0.05/1M | 2M |
- Jiekou.AI$0.475
- LaoZhang API$0.50
- CrazyRouter$0.50
- AIHubMix$0.50
- VertexFrom$0.50
- HeliconeFrom$0.50
- DevPass (LLM Gateway)From$0.50
- RequestyFrom$0.50
Specs
- Type
- Text
- Maker
- xAI
- Inputs
- Image, Text
- Outputs
- Text
- Context
- 2M≈ 3000 pages of text
- Max output
- —
- Capabilities
- Prompt caching, JSON, Reasoning, Tool calling, Vision
- Released
- Nov 19, 2025
- License
- —
- Open weights
- —
Alternatives to Grok 4.1 Fast (Reasoning)
Same kind of model from other makers, at a similar price.
| Model | Lowest price | Context | Arena | Providers |
|---|---|---|---|---|
| Grok 4.1 Fast (Reasoning)this model | $0.475/1M | 2M | — | 8 |
 GLM-5.3 | $1.10/1M | 1.05M | 1623 | 49 |
| GLM-5.3-Flash | $0.20/1M | 1.05M | 1608 | 45 |
 Qwen3.8 27B | $0.50/1M | 262K | 1591 | 33 |
| GPT-6 Luna | $0.40/1M | 1.05M | 1578 | 28 |
 Sonar | $1/1M | 127K | — | 9 |
| Claude Haiku 5.5 | $0.30/1M | 1M | 1585 | 27 |
 MiMo-V2.6-Pro | $0.696/1M | 1.05M | 1625 | 21 |
| Qwen3.8 Flash Next | $0.376/1M | 262K | 1628 | 5 |
More from xAI
Grok 4.1 Fast (Reasoning) FAQ
The lowest price for Grok 4.1 Fast (Reasoning) is $0.475 /1M, at Jiekou.AI.
Jiekou.AI, at $0.475 /1M. 8 providers serve Grok 4.1 Fast (Reasoning); the table above lists every one with its price.
Grok 4.1 Fast (Reasoning) reads up to 2M tokens per request.
We have not found Grok 4.1 Fast (Reasoning)'s weights published by its maker.
8 API providers serve Grok 4.1 Fast (Reasoning). Compare their prices above, or open a provider to see everything it offers.
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