GPT Realtime 2.1 Mini

Jul 2026
GPT Realtime 2.1 Mini
Compare in
on
$10 / $20per 1M audio in / out
0.9 sfirst audio?
22.5τ-Voice
Jul 2026released

Rankingat minimal effort?

Full ranking →
1Raon SpeechChat 9B02Deepslate Opal0.43Eleven Realtime v1 Max0.64Eleven Realtime v1 Mini0.65Grok Voice 2.00.7
···
9Grok Voice 3.00.810GPT Realtime 2.1 Mini0.911Qwen3 Omni 30B A3B Instruct0.9

Strong at

C
Speech & Voice#14 of 17

History

2 versions
0.80.80.80.9Oct 25Jan 26Apr 26Jul 26Release dateTime to first audio (lower is better)Mini2.1
0.80.80.80.9Oct 25Jan 26Apr 26Jul 26Release dateTime to first audio (lower is better)Mini2.1

Benchmarks

in Speech & Voice
Big Bench Audio · AA v1.262.7#22
Full-Duplex-Bench · AA subset v1/v1.591.8#17
Time to first audio · AA0.9#10
AA Speech Agent Arena · overall · Elo839.7#18
AA Speech Agent Arena · overall · Task Success76.7#14
AA Speech to Speech Index v2.054.4#14
AA Speech Agent Arena · agentic · Elo810.3#19
AA Speech Agent Arena · non-agentic · Elo858.1#16
τ-Voice · AA · aggregate22.5#14
τ-Voice · AA · airline36#15
τ-Voice · AA · retail13.2#14
τ-Voice · AA · telecom18.4#12

FAQ

Is GPT Realtime 2.1 Mini free to use?›

There is no free API; the cheapest paid price is $10 per 1M input tokens.

How good is GPT Realtime 2.1 Mini, and what is it best at?›

#14 of 17 in Realtime.

Is GPT Realtime 2.1 Mini better than GPT Realtime Mini?›

On Time to first audio · AA, GPT Realtime 2.1 Mini scores 0.9 vs 0.8 — about the same.

How can I use GPT Realtime 2.1 Mini?›

Through the OpenAI API.

When was GPT Realtime 2.1 Mini released? Is there a newer version?›

Released 2026-07-06. It is the current version in its line.

Is GPT Realtime 2.1 Mini open source?›

No, GPT Realtime 2.1 Mini is a closed model available through an API. The closest open-weights option here is Raon SpeechChat 9B.

What is GPT Realtime 2.1 Mini?›

GPT Realtime 2.1 Mini is a closed speech & voice model from OpenAI, released Jul 2026, the successor to GPT Realtime Mini.

What are the best alternatives to GPT Realtime 2.1 Mini?›

Raon SpeechChat 9B (open weights).