Grok 4.1 Fast API pricing
Published on-demand rates for xAI's xai/grok-4-1-fast, captured 2026-08-10 from public pricing data and committed to our archive. Context window 2M tokens; first observed in our archive 2025-11-24.
| Meter | USD per 1M tokens |
|---|---|
| Input | $0.200 |
| Output | $0.500 |
| Cached input | $0.050 |
Standard on-demand rates. Excludes batch endpoints and negotiated pricing; confirm on xAI's pricing page before committing.
What it costs on a real workload
The four frozen profiles the LLMPrice indices price, per 1M tokens processed, at the rates above. Where no cache-read rate is published, the whole input bills at the standard rate.
| Profile | In / out mix | Cached share | Cost |
|---|---|---|---|
| Retrieval | 800k / 200k | 70% | $0.176 |
| Chat | 500k / 500k | 30% | $0.328 |
| Content | 200k / 800k | 20% | $0.434 |
| Agent | 900k / 100k | 85% | $0.115 |
Profile definitions are frozen and published on the methodology page. Compare every model on these profiles →
Observed rate history
No repricing observed since this model entered our archive on 2025-11-24. When a rate moves, the change appears here and on the sitewide ticker.
Priced near this one
The models closest to Grok 4.1 Fast on a retrieval workload, cheaper and more expensive alike. We publish no quality score, so this is what they cost and nothing more.
| Model | Provider | Input | Output | vs Grok 4.1 Fast |
|---|---|---|---|---|
| Ministral 3 14B | Mistral | $0.200 | $0.200 | 14% more |
| Ministral 3 8B | Mistral | $0.150 | $0.150 | 15% less |
| Devstral Small | Mistral | $0.100 | $0.300 | 20% less |
| Grok 3 Mini | xAI | $0.300 | $0.500 | 22% more |
Compared on the retrieval profile: 800k input, 200k output, 70% of input cached where the model offers a cache rate.
No affiliate or referral arrangements: the console link carries no parameters and nothing on this page is paid placement. Grok 4.1 Fast is a trademark of its owner; LLMPrice.io is independent and unaffiliated.