Data read October 27, 2026
Gradium TTS vs ElevenLabs Eleven v3 Conversational: TTS API comparison
Speed cannot be compared: Coval does not measure ElevenLabs Eleven v3 Conversational, so it has no P95 here.
On Artificial Analysis listener Elo, ElevenLabs Eleven v3 Conversational is ahead (1,174 for Gradium TTS, 1,213 for ElevenLabs Eleven v3 Conversational). List price per million characters: $36 to $57.80 for Gradium TTS, $50 for ElevenLabs Eleven v3 Conversational.
Gradium TTS is ranked 1 of 23; ElevenLabs Eleven v3 Conversational is not in the multilingual speed ranking. 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 v3 Conversational | Ahead |
|---|---|---|---|
| Rank in the multilingual speed ranking | 1 | not ranked | n/a |
| Speed tier | Headroom | n/a | n/a |
| Median time to first audio (ms), lower is faster | 53.7 | n/a | n/a |
| P95 time to first audio (ms), lower is faster | 104.3 | n/a | n/a |
| Listener Elo (Artificial Analysis) | 1,174 | 1,213 | ElevenLabs Eleven v3 Conversational |
| Customer-service Elo (Artificial Analysis) | 1,241 | 1,271 | Tie |
| Naturalness (Speko) | 1,592 | 1,590 | Gradium TTS |
| Naturalness estimate (Cekura, 1 to 5) | 4.51 | n/a | n/a |
| Reading accuracy (Cekura) | 79.5% | n/a | n/a |
| Hard passages judged correct (Artificial Analysis) | n/a | 84.8% | n/a |
| Lowest list price per 1M characters (lower is cheaper) | $36 to $57.80 | $50 | Gradium TTS |
| Languages tested (Artificial Analysis, Speko) | 4 | 13 | ElevenLabs Eleven v3 Conversational |
| 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 v3 Conversational?
- Speed cannot be compared: Coval does not measure ElevenLabs Eleven v3 Conversational, so it has no P95 here.
- How do Gradium TTS and ElevenLabs Eleven v3 Conversational compare on voice quality?
- On Artificial Analysis listener Elo, ElevenLabs Eleven v3 Conversational is ahead (1,174 for Gradium TTS, 1,213 for ElevenLabs Eleven v3 Conversational).
- Which is cheaper, Gradium TTS or ElevenLabs Eleven v3 Conversational?
- List price per million characters: $36 to $57.80 for Gradium TTS, $50 for ElevenLabs Eleven v3 Conversational.