GPT Realtime 2.1
A reasoning model with tool use that updates GPT-Realtime-2 with improved alphanumeric recognition, silence and noise handling, and interruption behavior for speech-to-speech voice-agent workflows.
text + audio → text + audio · made by OpenAI
Sold by 3 ways
| Seller | Lane | Rate |
|---|---|---|
| Microsoft Azure AI cloud | standard | $4per Mtok in$24per Mtok out$0.4per Mtok cached$0.4per Mtok cached, audio$0.5per Mtok cached, image$32per Mtok in, audio$5per Mtok in, image$64per Mtok out, audioraw.githubusercontent.com · read 2026-10-31 |
| OpenAI api | standard | $4per Mtok in$24per Mtok out$0.4per Mtok cached, audio$32per Mtok in, audio$64per Mtok out, audiodevelopers.openai.com · read 2026-08-24 |
| Vercel AI Gateway aggregator | standard | $4per Mtok in$24per Mtok out$0.4per Mtok cachedai-gateway.vercel.sh · read 2026-08-25 |
About
GPT Realtime 2.1 — a text and audio model from OpenAI, sold by 3 companies from $4 in and $24 out per million tokens.
It takes text and audio and returns text and audio, with a context window of 128,000 tokens. It was published in July 2026, trained on material up to September 2024. Its sellers say it can reason step by step and call a tool. The catalogue files it under speak. Three companies sell it. The cheapest is $4 in and $24 out per million tokens at Microsoft Azure AI.
Every current figure
- Maker
- OpenAI
- Register
- model
- Takes
- text + audio
- Returns
- text + audio
- Context
- 128,000 tokens
- Longest answer
- 32,000 tokens
- Published
- July 2026
- Knowledge to
- September 2024
- Licence
- not read
- Sellers
- 3
- Price
- $4 in and $24 out per million tokens — Microsoft Azure AI
Known as 2 names
gpt-realtime-2.1openai/gpt-realtime-2.1