Data read October 27, 2026
Gradium TTS vs Alibaba Qwen3 TTS Flash Realtime: TTS API comparison
On P95 latency, Gradium TTS is faster: 104.3 ms for Gradium TTS against 785.8 ms for Alibaba Qwen3 TTS Flash Realtime.
Listener Elo is not available for both models, so voice preference is not compared. List price per million characters: $36 to $57.80 for Gradium TTS, $13 for Alibaba Qwen3 TTS Flash Realtime.
Gradium TTS is ranked 1 of 23; Alibaba Qwen3 TTS Flash Realtime is ranked 21 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 | Alibaba Qwen3 TTS Flash Realtime | Ahead |
|---|---|---|---|
| Rank in the multilingual speed ranking | 1 | 21 | n/a |
| Speed tier | Headroom | Visible delay | n/a |
| Median time to first audio (ms), lower is faster | 53.7 | 726.8 | Gradium TTS |
| P95 time to first audio (ms), lower is faster | 104.3 | 785.8 | Gradium TTS |
| Listener Elo (Artificial Analysis) | 1,174 | n/a | n/a |
| Customer-service Elo (Artificial Analysis) | 1,241 | n/a | n/a |
| Naturalness (Speko) | 1,592 | n/a | n/a |
| 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 | n/a | n/a |
| Lowest list price per 1M characters (lower is cheaper) | $36 to $57.80 | $13 | Alibaba Qwen3 TTS Flash Realtime |
| Languages tested (Artificial Analysis, Speko) | 4 | 0 | Gradium TTS |
| 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 Alibaba Qwen3 TTS Flash Realtime?
- On P95 latency, Gradium TTS is faster: 104.3 ms for Gradium TTS against 785.8 ms for Alibaba Qwen3 TTS Flash Realtime.
- How do Gradium TTS and Alibaba Qwen3 TTS Flash Realtime compare on voice quality?
- Listener Elo is not available for both models, so voice preference is not compared.
- Which is cheaper, Gradium TTS or Alibaba Qwen3 TTS Flash Realtime?
- List price per million characters: $36 to $57.80 for Gradium TTS, $13 for Alibaba Qwen3 TTS Flash Realtime.