Hume AI
Emotionally expressive Octave TTS and EVI empathic voice interface for building conversational voice AI.
Best for Emotionally expressive voice agents and narration
Used Hume AI and liked it? Upvote it. One upvote per person. Upvotes come from visitors, not from us, and never change "Our ranking".
What it does
Hume AI provides evaluation and data infrastructure to measure and improve voice AI systems. Teams feed in raw audio, conversation data, or model endpoints, and receive automated expression scores, diagnostic test suites, and human ratings on how their systems sound. It is designed for developers building voice models and teams deploying conversational voice agents.
Read more: 5 features and how people use themShow less
-
VoiceEQ platform
Analyzes your conversation data to discover use cases, build tailored evaluation suites, and benchmark voice systems across realistic conversational dimensions.
Use caseAn AI team analyzes past conversation logs to build automated test cases and diagnose why their agent fails during user interruptions.
From hume.ai · image from Hume AI -
Audio expression API
Extracts vocal expression and timing dimensions straight from audio streams in real time across multiple languages.
Use caseA contact center engineer feeds live caller audio into an agent so it detects hesitation or distress and adapts its tone.
From hume.ai/products/voiceeq-platform -
Prism pipeline
Cleans, segments, transcribes, and organizes unstructured audio directly inside your cloud environment to prepare training data.
Use caseA voice model builder turns large volumes of unorganized audio files into a searchable, labeled corpus for speech training.
From hume.ai/products/voiceeq-platform -
Human feedback API
Delivers ground truth preference ratings from screened human reviewers to evaluate nuances that automated tools miss.
Use caseA model researcher collects human quality scores on candidate voice checkpoints to calibrate automated evaluation judges.
From hume.ai -
User testing API
Runs live spoken interactions between human testers and your model endpoint across custom scripts and target personas.
Use caseA developer runs live spoken conversations against their system to gather missing edge case training data with consent.
From hume.ai
Written from Hume AI's own website, checked . Each feature links to the page it comes from; images are Hume AI's own.
Every plan
| Plan | Monthly | Billed yearly | Per | What it includes |
|---|---|---|---|---|
| Free | Free | Not listed | per user | 10K TTS chars, 5 EVI min/mo |
| Starter | $3 | Not listed | per user | 30K TTS chars, 40 EVI min/mo |
| Creator | $14 | Not listed | per user | 140K TTS chars, 200 EVI min/mo |
| Pro | $70 | Not listed | per user | 1M TTS chars, 1,200 EVI min/mo |
| Scale | $200 | Not listed | per user | 3.3M TTS chars, 5,000 EVI min/mo |
| Business | $500 | Not listed | per user | 10M TTS chars, 12,500 EVI min/mo |
| Enterprise | Contact sales | Not listed | custom | contact sales |
From Hume AI's own pricing page, checked . Prices are in US dollars per month; "billed yearly" is the monthly price when you pay for a year up front.
Hume AI video tutorials
Independent creators on YouTube, not Hume AI or us. The video loads from YouTube only when you press play.
What the free plan includes
10,000 TTS characters/
Questions people ask about Hume AI
How much does Hume AI cost?
Paid plans start at $3 a month (Starter). 7 plans are listed above, from Hume AI's own pricing page.
Is Hume AI free?
Yes, there is a free plan: 10,000 TTS characters/mo, 5 EVI minutes/mo.
Does Hume AI have an API?
Yes.
Works with
- AI models
- Hume Octave, GPT 4o Realtime, Gemini Live, ElevenLabs v3, Cartesia Sonic
- Languages
- 50+ languages
Where this came from
Plans, prices and limits were copied from Hume AI's own pages and the other sources listed, then checked .
How we collect prices and rank tools · Is something wrong? Correct this listing
Others that do the same job
Cartesiacartesia.ai
Ultra low latency Sonic TTS, speech to text and voice agent platform built for real time developers.
- Green flag: Free plan
- Green flag: Some credits roll over
Happy Scribehappyscribe.com
AI and human transcription, subtitles and translation in 150+ languages with meeting recorder.
- Green flag: Free plan
- Green flag: Cancel online
- Green flag: No card for trial
- Red flag: Credits reset monthly
Sonixsonix.ai
Automated transcription, translation and subtitling in 54+ languages with an in browser editor and API.
- Green flag: No card for trial
- Green flag: Doesn't train on your data
Wispr Flowwisprflow.ai
System wide AI voice dictation that turns speech into polished text in any app.
- Green flag: Free plan
- Green flag: No card for trial
Sunosuno.com
Generates full songs with vocals and lyrics from text prompts, plus editing, personas and a DAW style Studio.
- Green flag: Free plan
- Green flag: No card for trial
- Red flag: Credits reset monthly
- Red flag: Trains on your data
Listnrlistnr.ai
Budget AI text to speech and podcast voice generator with 1,000+ voices across 140+ languages.
- Green flag: Free plan
- Green flag: Cancel online
- Green flag: No card for trial
- Red flag: Credits reset monthly