Data read October 27, 2026
Gradium TTS vs ElevenLabs Eleven v4 Turbo: TTS API comparison
On P95 latency, Gradium TTS is faster: 104.3 ms for Gradium TTS against 238.6 ms for ElevenLabs Eleven v4 Turbo.
On Artificial Analysis listener Elo, ElevenLabs Eleven v4 Turbo is ahead (1,174 for Gradium TTS, 1,333 for ElevenLabs Eleven v4 Turbo). List price per million characters: $36 to $57.80 for Gradium TTS, $40 for ElevenLabs Eleven v4 Turbo.
Gradium TTS is ranked 1 of 23; ElevenLabs Eleven v4 Turbo is ranked 8 of 23. Every comparison on this site uses Gradium TTS as its fixed reference, and no page says either model is better overall.
| Measure | Gradium TTS | ElevenLabs Eleven v4 Turbo | Ahead |
|---|---|---|---|
| Rank in the multilingual speed ranking | 1 | 8 | n/a |
| Speed tier | Headroom | Fast enough | n/a |
| Median time to first audio (ms), lower is faster | 53.7 | 188.9 | Gradium TTS |
| P95 time to first audio (ms), lower is faster | 104.3 | 238.6 | Gradium TTS |
| Listener Elo (Artificial Analysis) | 1,174 | 1,333 | ElevenLabs Eleven v4 Turbo |
| Customer-service Elo (Artificial Analysis) | 1,241 | 1,372 | ElevenLabs Eleven v4 Turbo |
| Naturalness (Speko) | 1,592 | 1,670 | ElevenLabs Eleven v4 Turbo |
| Naturalness estimate (Cekura, 1 to 5) | 4.51 | 4.42 | Gradium TTS |
| Reading accuracy (Cekura) | 79.5% | 79.9% | ElevenLabs Eleven v4 Turbo |
| Hard passages judged correct (Artificial Analysis) | n/a | 90.1% | n/a |
| Lowest list price per 1M characters (lower is cheaper) | $36 to $57.80 | $40 | Gradium TTS |
| Languages tested (Artificial Analysis, Speko) | 4 | 9 | ElevenLabs Eleven v4 Turbo |
| Access | Proprietary | Proprietary | n/a |
| Streaming status | Measured | Measured | n/a |
Ahead is computed from the figures only. A latency gap under 10 ms is a tie; listener Elo values whose 95% intervals overlap are a tie. A measure one benchmark does not hold is n/a for that model and is never estimated. See the methodology and each model page for sources.
Frequently asked questions
- Is Gradium TTS faster than ElevenLabs Eleven v4 Turbo?
- On P95 latency, Gradium TTS is faster: 104.3 ms for Gradium TTS against 238.6 ms for ElevenLabs Eleven v4 Turbo.
- How do Gradium TTS and ElevenLabs Eleven v4 Turbo compare on voice quality?
- On Artificial Analysis listener Elo, ElevenLabs Eleven v4 Turbo is ahead (1,174 for Gradium TTS, 1,333 for ElevenLabs Eleven v4 Turbo).
- Which is cheaper, Gradium TTS or ElevenLabs Eleven v4 Turbo?
- List price per million characters: $36 to $57.80 for Gradium TTS, $40 for ElevenLabs Eleven v4 Turbo.