Hume is an empathic voice AI platform whose EVI interface and Octave TTS understand context and emotion to produce natur...
About this product
Hume AI is a research lab and technology company focused on emotionally intelligent AI, based in New York and founded in 2021 by former Google researcher Dr Alan Cowen, who pioneered "semantic space theory" in emotion science for more precise modelling of human expression.
Main products:
EVI (Empathic Voice Interface): real-time voice AI that understands tone and emotion and responds with fitting expression — for voice support, companion apps and AI characters.
Octave text to speech: understands what the words mean to choose delivery; design voices from a description (e.g. "a weary old sea captain") or clone one.
Expression measurement API: analyse emotion in voice, facial expressions and text.
Which plan to choose
Account: free credits to try it.
Starter / Creator: for individual creators making voice-overs and audio.
Pro / Scale / Business: more usage and concurrency for teams building voice AI into products.
What Hume can do
Voice · Intermediate
Emotional voice conversations
EVI hears tone and replies with feeling.
Sign in at hume.ai and open the EVI playground
Allow the microphone and start talking
Say the same thing in different tones and notice how it responds
Voice-over · Beginner
Design a voice from a sentence
Octave delivers context-aware narration.
Open Octave text to speech
Describe the voice in one line
Generate with your text and save the voice
For example
A British man in his fifties with a deep, gentle voice, like he is telling a bedtime story.
Developers · Advanced
Build voice AI
Build voice support and AI characters via the API.
Create an API key on the developer platform
Configure EVI's prompt and voice
Connect it to your site or app with the SDK
Getting started
Try EVI: talk to it in the Playground on the website or console.
Generate speech: enter text in TTS, pick or design a voice, then download.
Build it in: create an API key in the console and integrate EVI or TTS following the docs.
🙋 Manual delivery⏰ Working hours UTC+8 09:00–21:00📧 Sent to your order email, also viewable once on the order page
What AI services does 5buyai.com support? Can I get an invoice?
Accounts, subscriptions and top-ups for ChatGPT, Claude, Midjourney, Gemini, Grok and other major AI tools. Invoices are available for AI orders paid in Chinese yuan (CNY).
How do I receive my order after paying?
Orders are delivered manually: after successful payment, the account or card code is sent to your order email during working hours (9:00–21:00, UTC+8). You can check your order details anytime on the order lookup page by order number, email or browser cache.
What payment methods are supported?
Alipay, WeChat Pay, USDT, and Credit Card payments. Credit card payments require first topping up your balance, and then using the balance to purchase products.
Do I need an account to buy?
No. You can check out as a guest and receive items by email; registering lets you manage orders, balance and invoices in one place.
Are prices shown in CNY?
All prices are listed in Chinese Yuan (¥). When paying with USDT the amount is converted automatically at the live rate.
Is there after-sales support?
After-sales support is available for some products, handled via live chat or the order dispute page. Accounts are virtual products: once delivered, no refunds are given unless there is an after-sales issue. CNY refunds and USD refunds are only made back to the original payment method, and USDT refunds are only made on the BSC network.
I am a business buyer and need to make a bulk purchase. How can I get in touch?
Please click the chat widget at the bottom-right corner to reach us and leave your email or other contact details. We will get back to you as soon as possible.
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Disclaimer
This is an independent third-party platform, not affiliated with, endorsed by, or authorized by any brand mentioned. We do not host any third-party login page and do not collect third-party credentials.
Someone says "I'm fine." You know they aren't.
You heard it - the pause, the flat tone. Voice AI doesn't. It all gets dropped at transcription.
So we built the Expression Measurement API. 48+ emotions, 600+ descriptors, 50+ languages, audio and video, real-time.
Conversation
Today Hume is introducing Real World VoiceEQ: a benchmark for measuring the human quality of voice AI across 40+ proprietary and open-source models, 15+ dimensions, and 60+ metrics—developed from more than 1 million individual human ratings.
One performance, infinite voices.
Voice Conversion is now live on Hume’s creator studio and API!
Generate the same pacing, pronunciation, and intonation with one recording across any voice you choose.
Hear it for yourself ⬇️
Why are phone numbers so hard for voice AI?📞🤖
Did you know that reading out something as simple as 555-010-2314 is a weirdly difficult task for TTS?
In a recent eval we ran on all the major TTS models, Hume’s Octave 2 comes out at the top with the lowest error rates for
