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Grok 4.1 Fast API price
xai/grok-4-1-fast
The cheapest Grok 4.1 Fast API is $0.20/M input at LiteLLM index (community) - all 2 providers compared below, per 1M tokens.
MidxAI2M context2 sellers
Input
$0.20
per 1M tokens · LiteLLM index (community)
up to $0.40
Output
$0.50
per 1M tokens · LiteLLM index (community)
up to $1.00
Where to buy it
Cheapest Grok 4.1 Fast API providers compared - 2 sellers, from $0.20/M.
| Provider | Input $/M | Output $/M | Cached in |
|---|---|---|---|
| LiteLLM index (community) | 0.200cheapest | 0.500 | 0.050 |
| > 128k tokens ctx | 0.400 | 1.00 | - |
| TokenRouter (aggregator) | 0.200 | 0.500 | 0.050 |
2.0× between the cheapest and the dearest of 2 sellers.
Against its tier
- This model$0.70
- Cheapest · Nemotron 3 Super 120B A12B$0.485
- Tier median · Grok 4.3$3.75
- Dearest · GPT 5.5 Cyber$87.50
#3 of 33 mid · cheaper than 94%
Details
- Context window
- 2M2,000,000 tokens
- Developer
- xAI
- Intelligence
- 31.3Reasoning
- Sellers
- 22.0× spread
- Cached input
- $0.05where the source publishes one
- Cheapest at
- LiteLLM index (community)
- Combined
- $0.70in + out per 1M
- Last checked
- 2026-08-28