# Hume Octave TTS Review

> Hume Octave TTS review: Expressiveness-first TTS (Octave understands the meaning of the text it speaks); subscription plans gate commercial use, with Octave 2.

![Hume Octave TTS logo](https://www.versusref.com/logos/hume-octave.png)

Expressiveness-first TTS (Octave understands the meaning of the text it speaks); subscription plans gate commercial use, with Octave 2 (preview) adding ~100ms latency and 11 languages for realtime use.

Among the 15 text-to-speech tools we track, Hume Octave TTS has the 4th-fastest time-to-first-byte - a fit for real-time, conversational apps.

From $3/mo · facts verified Jul 20, 2026

## What we know about Hume Octave TTS

Hume Octave TTS sits in the text-to-speech apis category, where it is expressiveness-first TTS (Octave understands the meaning of the text it speaks); subscription plans gate commercial use, with Octave 2 (preview) adding ~100ms latency and 11 languages for realtime use. We keep this Hume Octave TTS profile grounded in primary sources, each fact dated to when we last confirmed it.

On pricing, Hume Octave TTS starts at $3 per month for its entry tier. That is the sticker rate: real production cost usually runs higher once you add a language model, a voice provider, and telephony minutes.

On capabilities, Hume Octave TTS covers streaming audio output, realtime websocket api, instant voice cloning, emotion / style controls, and word-level timestamps, and does not offer commercial use on free tier. Each of those is verified against Hume Octave TTS's own docs or dashboard, not marketing copy.

Placed against the 15 text-to-speech tools we track, Hume Octave TTS's strongest showing is the 4th-fastest time-to-first-byte, while it trails at 23rd on languages - a spread worth weighing against your own priorities.

In total we track 18 verified facts for Hume Octave TTS today, each linking the primary source it came from so you can check our work - and vendor claims we have not measured ourselves are labeled as such on the Hume Octave TTS fact sheet below.

## Hume Octave TTS pricing

Cheapest paid plan $3/mo with 30,000 characters included, verified Jul 20, 2026 ([source](https://www.hume.ai/pricing)).

| Monthly volume | $ / 1M chars | $ / audio-min | Monthly bill |
| --- | --- | --- | --- |
| 200K chars/mo | Higher plan | Higher plan | Higher plan |
| 2M chars/mo | Higher plan | Higher plan | Higher plan |
| 20M chars/mo | Higher plan | Higher plan | Higher plan |

Effective rates from published pricing; subscription plans resolve to plan fee plus overage. ~950 characters ≈ 1 audio minute.

## Fact sheet

### Pricing

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Pricing model | hybrid | Jul 20 | [source](https://www.hume.ai/pricing) |
| Cheapest paid plan | $3 | Jul 20 | [source](https://www.hume.ai/pricing) |
| Characters included on cheapest plan | 30,000 chars/mo | Jul 20 | [source](https://www.hume.ai/pricing) |
| Free tier quota | 10000 | Jul 20 | [source](https://www.hume.ai/pricing) |

### Capabilities

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| TTFB latency (vendor-claimed) | ~100 ms | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Streaming audio output | ✓  Yes | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Realtime websocket API | ✓  Yes | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Instant voice cloning | ✓  Yes | Jul 20 | [source](https://dev.hume.ai/docs/voice/voice-cloning) |
| Minimum audio for voice cloning | 15 | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Languages supported | 11 languages (Octave 2 preview) | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Emotion / style controls | ✓  Yes | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/acting-instructions) |
| Word-level timestamps | ✓  Yes | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |

### Compliance & trust

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Commercial use on free tier | ✗  No | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/faq) |
| Voice cloning consent requirements | Required | Jul 20 | [source](https://dev.hume.ai/docs/voice/voice-cloning) |
| HIPAA BAA available | ✓  Yes | Jul 20 | [source](https://dev.hume.ai/docs/resources/privacy) |

### Build experience

| Fact | Value | Verified | Source |
| --- | --- | --- | --- |
| Official SDKs | TypeScript SDK | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Output formats | MP3, WAV, PCM | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |
| Max input per request | 5000 | Jul 20 | [source](https://dev.hume.ai/docs/text-to-speech-tts/overview) |

Source: https://www.versusref.com/tts/tools/hume-octave/