GPT Realtime

Aug 2025
Retires Jan 20, 2027Move toGPT Realtime 2.1Newer version
GPT Realtime
Compare in
on
$32 / $64per 1M audio in / out
1 sfirst audio?
30.4τ-Voice
Aug 2025released

Ranking?

Full ranking →
1StepAudio 3 Realtime Preview98.92Qwen Audio 3.0 Realtime Plus98.43GPT Live 197.34Grok Voice 3.0975Qwen Audio 3.0 Realtime Flash96.9
···
13Eleven Realtime v1 Max94.114GPT Realtime93.915Higgs Realtime92.8

Strong at

C
Speech & Voice#11 of 17

History

4 versions
93.59494.59595.596Oct 25Jan 26Apr 26Jul 26Release dateFull-Duplex-BenchGPT Realtime1.522.1
93.59494.59595.596Oct 25Jan 26Apr 26Jul 26Release dateFull-Duplex-BenchGPT Realtime1.522.1

Benchmarks

in Speech & Voice
Big Bench Audio · AA v1.283.3#17
Full-Duplex-Bench · AA subset v1/v1.593.9#14
Time to first audio · AA1#14
AA Speech Agent Arena · overall · Elo968.6#11
AA Speech Agent Arena · overall · Task Success89.4#7
AA Speech to Speech Index v2.069.1#11
AA Speech Agent Arena · agentic · Elo961.3#10
AA Speech Agent Arena · non-agentic · Elo968.9#12
τ-Voice · AA · aggregate30.4#11
τ-Voice · AA · airline31.3#16
τ-Voice · AA · retail37.7#8
τ-Voice · AA · telecom22.2#10
EVA-Bench · EVA-A accuracy pass40.7#8
EVA-Bench · EVA-X experience pass36.5#10
τ³-voice · Sierra · 1.0.0 · standard · retail36#4
τ³-voice · Sierra · 1.0.0 · standard · airline36#4
τ³-voice · Sierra · 1.0.0 · standard · telecom19.3#4
τ³-voice · Sierra · 1.0.0 · standard · overall30.4#4

FAQ

Is GPT Realtime free to use?›

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

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

#11 of 17 in Realtime.

Is GPT Realtime better than Eleven Realtime v1 Max?›

On Full-Duplex-Bench · AA subset v1/v1.5, GPT Realtime scores 93.9 vs 94.1 — about the same.

How can I use GPT Realtime?›

Through the OpenAI API.

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

Released 2025-08-28. It has been superseded by GPT Realtime 2.1.

Is GPT Realtime open source?›

No, GPT Realtime is a closed model available through an API. The closest open-weights option here is PersonaPlex 7B.

What is GPT Realtime?›

GPT Realtime is a closed speech & voice model from OpenAI, released Aug 2025.

What are the best alternatives to GPT Realtime?›

GPT Live 1 (better), PersonaPlex 7B (open weights).