GPT 5.1 Thinking (Fast)
An upgraded version of GPT-5 that adapts thinking time more precisely to the question to spend more time on complex questions and respond more quickly to simpler tasks.
text + image + file → text · made by OpenAI
$2.5→$20per Mtok in / out
Vercel AI Gateway
Sold by 1 way
| Seller | Lane | Rate |
|---|---|---|
| Vercel AI Gateway aggregator | standard | $2.5per Mtok in$20per Mtok out$0.25per Mtok cachedai-gateway.vercel.sh · read 2026-08-25 |
About
GPT 5.1 Thinking (Fast) — a text model from OpenAI, sold by one company from $2.5 in and $20 out per million tokens.
It takes text, images and files and returns text, with a context window of 400,000 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. Only Vercel AI Gateway sells it, at $2.5 in and $20 out per million tokens.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + image + file
- Returns
- text
- Context
- 400,000 tokens
- Longest answer
- 128,000 tokens
- Published
- November 2025
- Licence
- not read
- Sellers
- 1
- Maker's own price
- not read
- Price
- $2.5 in and $20 out per million tokens — Vercel AI Gateway
Known as 1 name
openai/gpt-5.1-thinking-fast