Hume AI

Overview

Hume AI's Octave models generate speech with natural prosody and controllable emotion, backed by a real-time Empathic Voice Interface (EVI) for conversational experiences. It focuses on making synthetic voices sound genuinely expressive rather than flat, and its API is among the most affordable at roughly $7.60 per million characters.

Key features

• Octave 2 expressive TTS
• Empathic Voice Interface (EVI)
• Emotion / prosody control
• Voice cloning & conversion
• Low-cost API

Pricing

Hume AI is freemium: a free tier lets you try the core features, and paid plans start at $3/mo. Plans (2026): Free ($0/mo), Starter ($3/mo), Creator ($7/mo), Pro ($70/mo), Business ($500/mo), Enterprise (Custom). Prices change often, so confirm current limits, credits, and enterprise terms on the official site.

Pros

• Expressive, emotion-controllable TTS (Octave)
• Real-time Empathic Voice Interface (EVI)
• Very affordable API (~$7.60/1M chars)
• Voice cloning and conversion

Cons

• Smaller voice catalog than rivals
• Newer, developer-first platform
• Best value only via the API

Who should use Hume AI

Developers building conversational agents and apps that need emotionally expressive, controllable speech — not just flat narration.

Our verdict

The pick when emotional nuance is the point: Octave gives fine control over how a line is delivered, and pricing is genuinely cheap per character. The voice catalog is smaller and the platform newer, so it rewards builders over click-and-go creators.

Try Hume AI

Ready to try it? Visit the Hume AI official website to create an account and explore its available voices and cloning options.