Hume AI

What Hume AI does

• Audio Decision API. Returns structured, probabilistic judgments about audio without needing transcripts.
• Expression APIs. Measure vocal expression, timing and conversational dynamics.
• Human Feedback API. Provides evaluations of voice output by trained raters.
• User Testing API. Recruits participants to test voice agents.
• Real-World VoiceEQ benchmark. A benchmark that ranks voice models.

Who it’s for

• Teams building voice agents who need evaluation data
• Developers measuring expression in recorded speech

Hume AI pricing

No rates published on the pages reviewed; the Audio Decision API bills by input tokens and the site points to 'Talk to Hume'

As listed on November 9, 2026. Check hume.ai for current prices.

Things to know

• Aimed at developers and teams; no consumer chat app is listed on the site
• Pricing page lists no plans or rates; the docs say the Audio Decision API bills by input tokens
• The homepage does not mention EVI or Octave

Quick answers

What is Hume AI?

Hume AI is a voice AI company whose APIs help teams measure and improve how voice AI performs in real-world use.

Is Hume AI free?

Hume AI is billed by usage. (As listed on November 9, 2026.)

Who makes Hume AI?

Hume AI is made by Hume AI, Inc..

Where can you use Hume AI?

Hume AI is available on an API for developers.

What are some alternatives to Hume AI?

Other tools filed in the same section include Cohere Command, DeepSeek and Inbenta.

Tags

#voice-ai#expression-analysis#api#audio#emotion-science