audio model comparison
Eleven v4 Turbo vs TTS-1
Eleven v4 Turbo and TTS-1 are both current audio models, from ElevenLabs and OpenAI. TTS-1 is 63% cheaper per character than Eleven v4 Turbo, $0.000015 vs $0.00004. On Artificial Analysis Speech Arena, Eleven v4 Turbo scores 1330 Elo and TTS-1 1090 Elo (Artificial Analysis, measured October 13, 2026).
Data verified October 13, 2026 · Dataset 2026-10-13
Side by side
Standard-tier prices in effect today. The better value in each row is highlighted.
| Fact | Eleven v4 Turbo | TTS-1 |
|---|---|---|
| Price per character | $0.00004 | $0.000015 (better) |
| Artificial Analysis Speech Arena | 1330 Elo (#1 of 11) (better) | 1090 Elo (#9 of 11) |
| Provider | ElevenLabs | OpenAI |
| Release date | September 28, 2026 | Not reported |
| Access | API only | API only |
| Context window | Not reported | Not reported |
| Max output | Not reported | Not reported |
| Input | text | text |
| Output | audio | audio |
When to choose each
Eleven v4 Turbo
Best for
- Realtime voice agents
- Low-latency streaming speech
Watch out for
- ElevenLabs' latency figures exclude application and network latency
TTS-1
Best for
- Low-latency text-to-speech
Watch out for
- OpenAI no longer lists TTS-1 on its models overview, though its model page and $15 per 1M characters price remain
Eleven v4 Turbo vs TTS-1 FAQ
Which is cheaper, Eleven v4 Turbo or TTS-1?
TTS-1 is 63% cheaper per character than Eleven v4 Turbo, $0.000015 vs $0.00004.
Which scores higher on independent benchmarks, Eleven v4 Turbo or TTS-1?
Eleven v4 Turbo leads on Artificial Analysis Speech Arena, 1330 Elo to 1090 Elo. Scores are independent evaluations, not either vendor's launch figures.
Related comparisons
Production evaluation
Choosing between Eleven v4 Turbo and TTS-1?
Public benchmarks narrow the shortlist. We run both on your own tasks, data and cost limits, then build the routing and review controls to run the winner in production.
- A head-to-head evaluation on your real workload
- Routing between models by cost and difficulty