Hume AI · Proprietary · Read 2026-10-27
Hume AI Octave 2: latency, voice quality, price and languages
- Rank
- not ranked
- Speed tier
- n/a
- P95
- n/a
- Price / 1M chars
- $87.50 to $100
Hume AI Octave 2 is a proprietary text-to-speech model from Hume AI. Coval does not measure its latency, so it has no speed tier and no rank. Artificial Analysis or Speko tested it in 4 languages.
This summary is generated from the measures below; it is not a vendor description. Measures a source does not hold are shown as n/a and are never estimated.
Speed (Coval, 30 days, US East, English)
| Speed tier | n/a |
| Median time to first audio | n/a |
| P90 | n/a |
| P95 | n/a |
| Mean | n/a |
| Standard deviation | n/a |
| Calls in the window | n/a |
| Cekura median, streamed text | 573 ms |
| Cekura median, full text | 582 ms |
Voice quality (never added together)
| Listener Elo (Artificial Analysis) | 1,056 ±12 |
| Customer-service Elo (Artificial Analysis) | 1,068 ±27 |
| Naturalness (Speko) | 1,377 |
| Naturalness estimate (Cekura, 1 to 5) | 4.38 |
Accuracy
| Reading accuracy (Cekura) | 87.4% |
| Numbers (Cekura) | 87% |
| Codes (Cekura) | 71% |
| Context (Cekura) | 100% |
| Medical terms (Cekura) | 99% |
| Hard passages judged correct (Artificial Analysis) | n/a |
| Numbers and dates (Speko score) | 0.24 |
| Word error rate (Coval) | n/a |
Price per 1 million characters
| Range across sources | $87.50 to $100 |
| Artificial Analysis | $87.50 |
| Speko | $100 |
| Coval | n/a |
| Cekura | $100 |
Coverage
| Access | Proprietary |
| Streaming | Measured |
| Coval tags | n/a |
| Rated for | Knowledge sharing, Assistants, Entertainment, Customer service |
| Languages tested | French, German, Japanese, Spanish |
Not collected
- Speed (Coval median time to first audio): not measured by Coval (reading of 2026-10-27, 30-day window)
- Speed (Coval P95 time to first audio): not measured by Coval (reading of 2026-10-27, 30-day window)
Sources
- https://artificialanalysis.ai/text-to-speech/leaderboard/provider-voice (read 2026-10-27)
- https://benchmarks.cekura.ai/text-to-speech (read 2026-10-27)
- https://benchmarks.speko.ai/tts/ (read 2026-10-27)
- Vendor site: https://www.hume.ai/
Keep exploring
Frequently asked questions
- How fast is Hume AI Octave 2?
- Coval does not measure Hume AI Octave 2, so no latency is published here.
- How much does Hume AI Octave 2 cost?
- The benchmarks print a list price of $87.50 to $100 per million characters for Hume AI Octave 2.
- Which languages was Hume AI Octave 2 tested in?
- Artificial Analysis or Speko tested Hume AI Octave 2 in French, German, Japanese, Spanish.