xAI: Grok 4.1 Fast
xAI's fast agentic tool-calling model with a 2M context window; non-reasoning variant for low-latency responses
Cheapest input
$0.19
$/MTok · models.dev
Cheapest output
$0.475
$/MTok
Context
2M
tokens
Sources
2
30 listings
Price changes
Cheapest list input/output only. Rates move rarely, so this is an event log. Down means cheaper. Showing the 8 latest changes.
- ↑ higherOutput $0.45 → $0.475
- ↑ higherInput $0.18 → $0.19
- ↓ lowerOutput $0.5 → $0.45
- ↓ lowerInput $0.2 → $0.18
Sources
Same model, different sources. Our first-party rate is listed first, then 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-non-reasoning | Jiekou.AI | $0.19 | $0.475 | $0 | 2M |
| models.devcheapestgrok-4-1-fast-reasoning | Jiekou.AI | $0.19 | $0.475 | $0 | 2M |
| models.devx-ai/grok-4.1-fast | Ofox | $0.2 | $0.5 | $0.05 | 2M |
| models.devxai/grok-4.1-fast-non-reasoning | Google Vertex AI | $0.2 | $0.5 | $0.05 | 128K |
| models.devxai/grok-4-1-fast-non-reasoning | Perplexity | $0.2 | $0.5 | $0.05 | 2M |
| models.devgrok-4-1-fast-non-reasoning | Abacus | $0.2 | $0.5 | $0 | 2M |
| models.devgrok-4-1-fast-non-reasoning | Azure | $0.2 | $0.5 | $0.05 | 128K |
| models.devgrok-4-1-fast-non-reasoning | Azure | $0.2 | $0.5 | $0.05 | 128K |
| models.devgrok-4-1-fast-non-reasoning | FrogBot | $0.2 | $0.5 | $0.05 | 2M |
| models.devgrok-4-1-fast-non-reasoning | Helicone | $0.2 | $0.5 | $0.05 | 2M |
| models.devgrok-4-1-fast-non-reasoning | DevPass (LLM Gateway) | $0.2 | $0.5 | $0.05 | 2M |
| 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 | 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 | DevPass (LLM Gateway) | $0.2 | $0.5 | $0.05 | 2M |
| models.devxai/grok-4.1-fast-reasoning | Google Vertex AI | $0.2 | $0.5 | $0.05 | 128K |
| models.devazure-ai-foundry/grok-4-1-fast-non-reasoning | LLM Gateway | $0.2 | $0.5 | $0 | 2M |
| models.devazure-ai-foundry/grok-4-1-fast-reasoning | LLM Gateway | $0.2 | $0.5 | $0 | 2M |
| LiteLLMxai/grok-4.1-fast-non-reasoning | N/A | $0.2 | $0.5 | $0.05 | N/A |
| LiteLLMgrok-4-1-fast-non-reasoning | N/A | $0.2 | $0.5 | $0.02 | N/A |
| LiteLLMgrok-4-1-fast-reasoning | N/A | $0.2 | $0.5 | $0.02 | N/A |
| LiteLLMxai/grok-4.1-fast-reasoning | N/A | $0.2 | $0.5 | $0.05 | N/A |
| LiteLLMazure_ai/grok-4-1-fast-non-reasoning | N/A | $0.2 | $0.5 | $0.02 | N/A |
| LiteLLMazure_ai/grok-4-1-fast-reasoning | N/A | $0.2 | $0.5 | $0.02 | N/A |
| LiteLLMvertex_ai/xai/grok-4.1-fast-non-reasoning | N/A | $0.2 | $0.5 | $0.05 | N/A |
| LiteLLMvertex_ai/xai/grok-4.1-fast-reasoning | N/A | $0.2 | $0.5 | $0.05 | N/A |
| LiteLLMoci/xai.grok-4.1-fast | N/A | $5 | $25 | $0.5 | N/A |
| LiteLLMxai.grok-4.1-fast | N/A | $5 | $25 | $0.5 | N/A |
Capabilities
- Reasoning
- Tool calling
- Structured output
- Attachments
- In: text
- In: image
- Out: text
Knowledge cutoff: 2025-07Released: 2025-11-19Family: grok
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