GPT-Realtime-2.1 mini

Key facts

Where GPT-Realtime-2.1 mini 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 mini has the number 54 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 mini differs from GPT-Realtime-2.1

Read from the recorded facts of the two models, not from a head-to-head test. We have not run either.

• Listed price is $0.6 in and $2.4 out, against $4 in and $24 out for GPT-Realtime-2.1 (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.

What we tested

Nothing yet. We have not run GPT-Realtime-2.1 mini 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

• OpenAI API changelog
• OpenAI model page: GPT-Realtime-2.1 mini

More from OpenAI

• GPT-Realtime-2.1 (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)

All 88 models