GPT Realtime 2

May 2026
GPT Realtime 2
Compare in
on
$32 / $64per 1M audio in / out
1.1 sfirst audio?
39.8τ-Voice
May 2026released

Rankingat xhigh effort?

Full ranking →
1Gemini 3.1 Flash Live Preview642GPT Realtime 2583GPT Realtime 1.5404GPT Realtime365Gemini 2.5 Flash Live API30

Strong at

B
Speech & Voice#7 of 17

Alternatives?

ModelScoreCostPriceWhat changes
BetterGemini 3.1 Flash Live Previewhigh+10%——Same labGPT Realtime 1.5-31%——

History

4 versions
354045505560Oct 25Jan 26Apr 26Release dateτ³-voice · Airline 1.0.0GPT Realtime1.52
354045505560Oct 25Jan 26Apr 26Release dateτ³-voice · Airline 1.0.0GPT Realtime1.52

Benchmarks

in Speech & Voice
AudioMultiChallenge · audio output · APR48.5#1
τ³-voice · Sierra · 1.0.0 · custom · retail50#1
τ³-voice · Sierra · 1.0.0 · custom · airline66#1
τ³-voice · Sierra · 1.0.0 · custom · telecom37.7#1
τ³-voice · Sierra · 1.0.0 · custom · overall51.2#1
τ³-voice · Sierra · 1.0.0 · standard · retail47.4#1
τ³-voice · Sierra · 1.0.0 · standard · airline58#2
τ³-voice · Sierra · 1.0.0 · standard · telecom21.9#1
τ³-voice · Sierra · 1.0.0 · standard · overall42.4#2
τ³-voice · Sierra · 1.0.1 · custom · banking knowledge10.3#3

FAQ

Is GPT Realtime 2 free to use?›

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

How good is GPT Realtime 2, and what is it best at?›

#7 of 17 in Realtime.

Is GPT Realtime 2 better than Gemini 3.1 Flash Live Preview?›

On τ³-voice · Sierra · 1.0.0 · standard · airline, GPT Realtime 2 scores 58 vs 64 — lower.

How can I use GPT Realtime 2?›

Through the OpenAI API.

When was GPT Realtime 2 released? Is there a newer version?›

Released 2026-05-07. It is the current version in its line.

Is GPT Realtime 2 open source?›

No, GPT Realtime 2 is a closed model available through an API.

What is GPT Realtime 2?›

GPT Realtime 2 is a closed speech & voice model from OpenAI, released May 2026.

What are the best alternatives to GPT Realtime 2?›

Gemini 3.1 Flash Live Preview (better).