Inworld TTS 1.5 MAX text-to-speech model
Inworld
Inworld TTS 1.5 MAX is a text-to-speech (TTS) model from Inworld. It has no Artificial Analysis score yet. On TTS Arena V2 it scores Elo 1510 (±28, 672 votes).
Key facts
- Provider
- Inworld
- AA rank
- –
- AA Elo (95% CI)
- –
- AA samples
- –
- TTS Arena Elo (uncertainty)
- 1510 ±28
- TTS Arena votes
- 672
- TTS Arena win rate
- 50.6%
- Price (per 1M chars)
- –
- Released
- –
- Open weights
- –
- License
- –
- Voices tested by AA
- –
- Languages
- –
- Voice cloning
- –
"–" means the upstream sources do not provide this value; we do not guess.
Nearby models
By TTS Arena Elo; this model highlighted| # | Model | AA Elo | Arena Elo | Price $/1M chars | Open weights |
|---|---|---|---|---|---|
| 14 | HOctave TTS Hume AI | 1039 | 1517 | $87.5 | – |
| 15 |  OpenAudio S2 Fish Audio | – | 1515 | – | – |
| 16 |  Speech 2.6 Turbo MiniMax | 1122 | 1514 | $60 | – |
| 17 | IInworld TTS 1.5 MAX Inworld | – | 1510 | – | – |
| 18 | TTypecast SSFM 3.0 Typecast | – | 1508 | – | – |
| 19 | CCartesia Sonic 2 Cartesia | – | 1505 | – | – |
| 20 | Speech-02-HD MiniMax | 1111 | 1504 | $100 | – |
Alternatives · More from Inworld
| # | Model | AA Elo | Arena Elo | Price $/1M chars | Open weights |
|---|---|---|---|---|---|
| – | IInworld TTS MAX Inworld | – | 1548 | – | – |
| – | IInworld TTS Inworld | – | 1532 | – | – |
| 6 | IRealtime TTS-2 Inworld | 1270 | – | $20.8 | – |
| 12 | IRealtime TTS-2 Flash Inworld | 1219 | – | $10.4 | – |
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 Inworld TTS 1.5 MAX rank among TTS models?
As of Oct 25, 2026, Inworld TTS 1.5 MAX has no Artificial Analysis score; its TTS Arena V2 Elo is 1510 (672 votes).
Is Inworld TTS 1.5 MAX open source?
The sources do not list Inworld TTS 1.5 MAX as open-weight; it is generally used through the Inworld 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.