GPT-Realtime-2 text-to-speech model
OpenAIReleased May 2026.
GPT-Realtime-2 is a text-to-speech (TTS) model from OpenAI. It ranks #51 of 98 on the Artificial Analysis TTS arena with Elo 1077 (95% CI ±12, 2,324 samples). List price is about $191.6 per 1M characters. Released May 2026.
Key facts
- Provider
- OpenAI
- AA rank
- #51 / 98
- AA Elo (95% CI)
- 1077 ±12
- AA samples
- 2,324
- TTS Arena Elo (uncertainty)
- –
- TTS Arena votes
- –
- TTS Arena win rate
- –
- Price (per 1M chars)
- $191.6
- Released
- May 2026
- Open weights
- –
- License
- –
- Voices tested by AA
- 5
- Languages
- –
- Voice cloning
- –
"–" means the upstream sources do not provide this value; we do not guess.
Nearby models
By AA Elo; this model highlighted| # | Model | AA Elo | Arena Elo | Price $/1M chars | Open weights |
|---|---|---|---|---|---|
| 48 |  OpenAudio S1 Fish Audio | 1087 | 1491 | $15 | – |
| 49 |  Gemini 2.5 Flash Lite TTS Google | 1087 | – | $9.2 | – |
| 50 |  Flash v2.5 ElevenLabs | 1078 | 1498 | $50 | – |
| 51 | GPT-Realtime-2 OpenAI | 1077 | – | $191.6 | – |
| 52 | Studio Google | 1076 | – | $160 | – |
| 53 | Journey Google | 1075 | – | $160 | – |
| 54 |  T2A-01-HD MiniMax | 1069 | – | $50 | – |
Alternatives · Cheaper with AA Elo ≥ 1047
| # | Model | AA Elo | Arena Elo | Price $/1M chars | Open weights |
|---|---|---|---|---|---|
| 1 | Eleven v4 Turbo ElevenLabs | 1336 | – | $40 | – |
| 2 | Eleven v4 ElevenLabs | 1332 | – | $80 | – |
| 3 |  Qwen-Audio-3.1-TTS-Plus Alibaba | 1307 | – | $19.3 | – |
| 4 | CSonic 3.6 Cartesia | 1292 | – | $49 | – |
| 5 | Gemini 3.8 Flash TTS Google | 1280 | – | $16.5 | – |
Alternatives · More from OpenAI
Alternatives · Top 5 open-weight by AA Elo
| # | Model | AA Elo | Arena Elo | Price $/1M chars | Open weights |
|---|---|---|---|---|---|
| 9 | Fish Audio Drama 3 Preview Fish Audio | 1248 | – | $15 | Open |
| 11 | BBreeze TTS 2 BreezeBlue | 1230 | – | $34 | Open |
| 19 |  Ming-3.0-tts Ant Group | 1191 | – | – | Open |
| 38 | Fish Audio S2 Pro Fish Audio | 1110 | – | $15 | Open |
| 41 |  Step Audio EditX (Mar 2026) StepFun | 1100 | – | – | Open |
FAQ
Where does GPT-Realtime-2 rank among TTS models?
As of Oct 25, 2026, GPT-Realtime-2 ranks #51 of 98 on the Artificial Analysis TTS leaderboard with Elo 1077 (±12).
Is GPT-Realtime-2 open source?
The sources do not list GPT-Realtime-2 as open-weight; it is generally used through the OpenAI API.
What is the best Chinese TTS model?
By AA Elo, the top model from a Chinese provider is Qwen-Audio-3.1-TTS-Plus by Alibaba (Elo 1307, #3 overall).
Which top-10 TTS model is cheapest?
Among the AA top 10, the lowest list price is Simba 3.2 (SpeechifyAI) at $6.6 per 1M characters, Elo 1246.
What is the best open-source TTS model?
By AA Elo, the top open-weight model is Fish Audio Drama 3 Preview by Fish Audio (Elo 1248, #9 overall); 18 open-weight models have an AA score.
Sources
"–" means the upstream sources do not provide this value; we do not guess.