GPT Realtime 2.1

Jul 2026
GPT Realtime 2.1
Compare in
on
$32 / $64per 1M audio in / out
1 sfirst audio?
38τ-Voice
Jul 2026released

Rankingat minimal effort?

Full ranking →
1GPT Live 174.52Grok Voice 3.071.63Gemini 3.8 Live Extended Thinking68.64Grok Voice 2.056.55Qwen Audio 3.0 Realtime Plus54.6
···
7GPT Realtime 1.538.88GPT Realtime 2.1389Gemini 3.1 Flash Live Preview37.7

Strong at

B
Speech & Voice#8 of 17

History

4 versions
30354045Oct 25Jan 26Apr 26Jul 26Release dateτ-VoiceGPT Realtime1.522.1
30354045Oct 25Jan 26Apr 26Jul 26Release dateτ-VoiceGPT Realtime1.522.1

Benchmarks

in Speech & Voice
Big Bench Audio · AA v1.286.8#15
Full-Duplex-Bench · AA subset v1/v1.592.7#15
Time to first audio · AA1#13
AA Speech Agent Arena · overall · Elo936.8#12
AA Speech Agent Arena · overall · Task Success89.4#7
AA Speech to Speech Index v2.070.7#8
AA Speech Agent Arena · agentic · Elo928#12
AA Speech Agent Arena · non-agentic · Elo954.8#13
τ-Voice · AA · aggregate38#8
τ-Voice · AA · airline52.7#9
τ-Voice · AA · retail41.2#7
τ-Voice · AA · telecom20.2#12

FAQ

Is GPT Realtime 2.1 free to use?›

There is no free API; the cheapest paid price is $32 per 1M input tokens.

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

#8 of 17 in Realtime.

Is GPT Realtime 2.1 better than GPT Realtime?›

On τ-Voice · AA · aggregate, GPT Realtime 2.1 scores 45.7 vs 30.4 — higher.

How can I use GPT Realtime 2.1?›

Through the OpenAI API.

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

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

Is GPT Realtime 2.1 open source?›

No, GPT Realtime 2.1 is a closed model available through an API.

What is GPT Realtime 2.1?›

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

What are the best alternatives to GPT Realtime 2.1?›

GPT Live 1 (better).