xAI: Grok 4.1 Fast Reasoning
Fast Grok model for responsive chat, reasoning, and tool-assisted work
Cheapest input
$0.18
$/MTok · models.dev
Cheapest output
$0.45
$/MTok
Context
2M
tokens
Offers
11
2 sources
Offers
Same model, different listings. First-party, router, and aggregator rows stay separate so you can see the spread instead of a single blended number.
| Source | Provider | Input | Output | Cache read | Context |
|---|---|---|---|---|---|
| models.devcheapestgrok-4-1-fast-reasoning | Jiekou.AI | $0.18 | $0.45 | $0 | 2M |
| models.devxai/grok-4.1-fast-reasoning | Vercel AI Gateway | $0.2 | $0.5 | $0.05 | 1M |
| models.devgrok-4-1-fast-reasoning | 302.AI | $0.2 | $0.5 | $0 | 2M |
| models.devgrok-4-1-fast-reasoning | Azure | $0.2 | $0.5 | $0.05 | 128K |
| models.devgrok-4-1-fast-reasoning | FrogBot | $0.2 | $0.5 | $0.05 | 2M |
| models.devgrok-4-1-fast-reasoning | Helicone | $0.2 | $0.5 | $0.05 | 2M |
| models.devgrok-4-1-fast-reasoning | LLM Gateway | $0.2 | $0.5 | $0.05 | 2M |
| LiteLLMxai/grok-4-1-fast-reasoning | — | $0.2 | $0.5 | $0.05 | — |
| LiteLLMgrok-4-1-fast-reasoning | — | $0.2 | $0.5 | $0.05 | — |
| LiteLLMazure_ai/grok-4-1-fast-reasoning | — | $0.2 | $0.5 | $0.02 | — |
| LiteLLMvertex_ai/xai/grok-4.1-fast-reasoning | — | $0.2 | $0.5 | $0.05 | — |
Capabilities
- Reasoning
- Tool calling
- Structured output
- Attachments
- In: text
- In: image
- In: pdf
- Out: text
Knowledge cutoff: 2024-10Released: 2025-11-20Family: grok