Grok 4.1 Fast Reasoning
Retired xAI model, slug grok-4-1-fast-reasoning.
text + image + file → text · made by xAI
Sold by 5 ways
| Seller | Lane | Rate |
|---|---|---|
| Google Vertex AI 0 ways | $0.2per Mtok in$0.5per Mtok out$0.05per Mtok cached | |
| Google Vertex AI cloudnot on the seller's list today | standard | $0.2per Mtok in$0.5per Mtok out$0.05per Mtok cachedmodels.dev · read 2026-10-31 |
| Microsoft Azure AI cloud | standard | $0.2per Mtok in$0.5per Mtok out$0.05per Mtok cachedmodels.dev · read 2026-10-31 |
| Oracle Cloud Infrastructure 0 ways | $5per Mtok in$25per Mtok out | |
| Oracle Cloud Infrastructure cloudnot on the seller's list today | standard | $5per Mtok in$25per Mtok outraw.githubusercontent.com · read 2026-08-27 |
| Requesty aggregator | xai | $0.2per Mtok in$0.5per Mtok out$0.05per Mtok cachedrouter.requesty.ai · read 2026-08-28 |
| Vercel AI Gateway 0 ways | $0.2per Mtok in$0.5per Mtok out$0.05per Mtok cached | |
| Vercel AI Gateway aggregatornot on the seller's list today | standard | $0.2per Mtok in$0.5per Mtok out$0.05per Mtok cachedai-gateway.vercel.sh · read 2026-08-25 |
Measured 11 standings
| Place | Board | Metric | Score |
|---|---|---|---|
| 20thof 92 | Forecastbench — Epoch AI | Overall score | 64.8 |
| 41stof 102 | Simplebench — Epoch AI | Score (AVG@5) | 0.56 |
| 56thof 71 | Vending bench 2 — Epoch AI | Score | 1106.628 |
| 77thof 84 | Proofbench — Epoch AI | Accuracy | 4 |
| 94thof 165 | LMArena · Vision | Score (Elo) | 1196 |
| 97thof 235 | Dtbench — Epoch AI | Accuracy | 87.73 |
| 103rdof 111 | Vectara Hallucination Leaderboard | Hallucination Rate | 19.2 |
| 112thof 414 | LMArena · Text | Score (Elo) | 1430 |
| 115thof 132 | Ale bench — Epoch AI | Performance | 394.93 |
| 131stof 141 | LMArena · WebDev | Score (Elo) | 1242 |
| 131stof 135 | Webdev arena — Epoch AI | Arena Score | 1223 |
About
Grok 4.1 Fast Reasoning — a text model from xAI, sold by 2 companies from $0.2 in and $0.5 out per million tokens, placed 20th of 92 on Forecastbench — Epoch AI.
It takes text, images and files and returns text, with a context window of 1,000,000 tokens. It was published in November 2025. Its sellers say it can reason step by step and call a tool. The catalogue files it under reasoning, code and agents. Two companies sell it. The cheapest is $0.2 in and $0.5 out per million tokens at Microsoft Azure AI. Beside the standard rate there is a separately routed lane. It has been measured on 11 boards, and stands best at 20th of 92 on Forecastbench — Epoch AI.
Every current figure
- Maker
- xAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 1,000,000 tokens
- Published
- November 2025
- Licence
- not read
- Sellers
- 2
- Maker's own price
- not read
- Price
- $0.2 in and $0.5 out per million tokens — Microsoft Azure AI
- Boards
- 11
- Best place
- 20th of 92 — Forecastbench — Epoch AI
Known as 5 names
Grok 4.1 Fast (Reasoning)Grok-4-1-fast-reasoning (FC)xai/grok-4-1-fast-reasoningspacexai/grok-4.1-fast-reasoningxai/grok-4.1-fast-reasoning