OpenAI · voice model
GPT-Realtime-2.1
GPT-Realtime-2.1 is an OpenAI voice model released Jul 6, 2026; OpenAI's newest voice model in our dataset is GPT-Live 1. Proprietary, API access only. OpenAI's realtime speech-to-speech reasoning model, released Jul 6, 2026 with better alphanumeric recognition and interruption handling. Verified against vendor sources on Oct 26, 2026.
Reported Last verified · All models · JSON · Markdown
- ReleasedJul 6, 2026
- Context window128K128,000 tokens
- Max output32K32,000 tokens
- LicenceProprietaryProprietary (API)
InTextAudioImageOutTextAudio
Key facts
| Fact | Value | Source |
|---|---|---|
| Vendor | OpenAI | n/a |
| Released | Jul 6, 2026 | source |
| Status | generally available | n/a |
| API id | gpt-realtime-2.1 | source |
| Context window | 128,000 tokens (128K) | source |
| Max output | 32,000 tokens | source |
| Input | text, audio, image | source |
| Output | text, audio | source |
| Licence | Proprietary (API) | source |
| Pricing | $4 in / $24 out per 1M tokens | source |
Where GPT-Realtime-2.1 sits in our data
- Released Jul 6, 2026 (week 28 of 2026), in July 2026. Other models in our data released that month: Gemini Robotics ER 2, GPT-Live-Transcribe, GPT-Transcribe, Claude Opus 5, Gemini 3.5 Flash-Lite, Gemini 3.6 Flash.
- The previous OpenAI model we track is GPT-5.5 Pro (Apr 24, 2026), 73 days earlier.
- Of the 60 models in our data with a published context window, GPT-Realtime-2.1 has the number 53 largest (128K tokens). Our data is not every model on the market.
- OpenAI tools we cover: Codex CLI, ChatGPT, OpenAI Agents SDK.
- All releases by date: AI model releases by month · new AI models this week.
How GPT-Realtime-2.1 differs from GPT-Realtime-2.1 mini
Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.
- Listed price is $4 in and $24 out, against $0.6 in and $2.4 out for GPT-Realtime-2.1 mini (per 1M tokens).
- Both list a 128K-token context window.
- Both accept text, audio, image as input.
- Both were released on Jul 6, 2026.
- Facts for the other model: GPT-Realtime-2.1 mini.
What we tested
Nothing yet. We have not run GPT-Realtime-2.1 ourselves, so every fact on this page is Reported from the sources below. When we do test it, the scope will be stated here and in our test logs. See methodology.
Sources
More from OpenAI
- GPT-Realtime-2.1 mini (Jul 6, 2026)
- GPT-5.6 Luna (Jul 9, 2026)
- GPT-5.6 Sol (Jul 9, 2026)
- GPT-5.6 Terra (Jul 9, 2026)
- GPT-Live-Transcribe (Jul 28, 2026)
- GPT-Transcribe (Jul 28, 2026)
- GPT-6 Astra (Sep 3, 2026)