Tyler
English · Narration
AI Voice API
Free to start. No card needed.
What VocalLab's API can do, why it's free on every plan, the 60–120 requests-per-minute limits, and how generation is billed compared with the app.
Sound tags and written directions work on every plan, Free included. See plans
“It's fast and dead simple to use: paste your text, pick a voice, done. No fuss, no learning curve.”
“As a professor who records frequent online lectures, I’ve found Vocallab AI to be an incredible tool for my workflow. The voice quality is remarkably lifelike…”
Step-by-step guide
How to Use AI Voice API
Start for free — no credit card, no software to install.
Upgrade to a plan with API access
Every account can create an API key, Free included, so there's nothing to upgrade first.Generate an API credential
Create a key on the API keys page, then send it as an Authorization: Bearer header to https://api.vocallab.ai/api/v1.List and choose a voice
Pull the available ready-made voices, or any saved clones and designed voices already on the account, before sending a generation request.Send text and generate speech
Submit the script and receive audio back, billed at roughly one point per 15 characters rather than the app's 17.Stay within the rate limit
60 requests per minute on Pro, 120 on Max — build in some headroom for retries or bursts.
AI Voice API
Features & Capabilities
Everything you need to create professional voiceovers — in one tool.
Full capability, not a subset
Voice listing, cloning, voice design and generation are all reachable through the API, not just generation.Gated to Pro and above
Free and Lite plans include API access too; you pay only for the points you spend.60 to 120 requests per minute
Baseline access on Pro at 60 requests per minute, rising to 120 on the Max plan for higher-throughput use.Slightly higher per-character rate
API generation is billed at roughly one point per 15 characters of text, compared with one point per 17 characters in the app — a small premium for programmatic access.
Use cases
What Can You Create with AI Voice API?
From TikTok to podcasts — here's where creators use this tool most.
Automated content pipelines
Generate narration for scripts produced elsewhere in a workflow without a person operating the app for each one.Multi-tenant applications
Manage clones, designed voices and generation for many end users from a single integration.Internal tools built on top of the platform
A custom interface that calls the API instead of using the product UI directly.Batch or scheduled generation
Queue a large number of generation requests within the rate limit rather than triggering them one at a time by hand.
vs Standard TTS
VocalLab vs Standard Text-to-Speech
See why creators switch from generic TTS tools to VocalLab.
| VocalLab AI | Standard TTS | |
|---|---|---|
| Audio quality | Studio-quality AI | No |
| MP3 export | Yes | No |
| SRT caption export | Yes | No |
| Word-level highlighting | Yes | No |
| Emotion & style control | Yes | No |
| Commercial rights | Yes | No |
| Instant generation | Yes | No |
| Free tier | No credit card needed | No |
Recommended Voices
Matched to this tool. Play a sample, then use it in Studio.
About this tool
Everything you need to know about AI Voice API
VocalLab's API lets an application do what the product interface does — list available voices, create and use voice clones and designed voices, and generate speech — without a person clicking through the app for every request. It's available on every plan, Free included, with a baseline rate limit of 60 requests per minute that rises to 120 on the Max plan. Generation through the API is billed slightly differently from the app: roughly one point per 15 characters of text rather than 17, reflecting the extra overhead of serving requests programmatically. The base URL is https://api.vocallab.ai/api/v1, and the full endpoint reference, models and error codes are on the developer docs at vocallab.ai/developers.
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What plan do I need for API access?
Any plan, Free included. A Free account can create a key and spend its 60 points through the API; paid plans add more points, and Max adds higher rate limits.
How is API generation billed compared to the app?
Slightly more per character — roughly one point per 15 characters through the API versus one point per 17 characters in the app, though both stay close to one point per second of audio.
What can the API actually do?
List available voices, create and use voice clones and designed voices, and generate speech from text — effectively everything the product interface does, callable from another application.
What's the rate limit?
60 requests per minute per key on every plan, rising to 120 requests per minute on the Max plan.
Turn your script into a voiceover.
60 free points, no card. Paste your text, pick a voice, export the MP3.