AI Voice API
What VocalLab's API can do, which plan unlocks it, the 60–120 requests-per-minute limits, and how generation is billed compared with the app.
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
The API is gated to Pro and above; Free and Lite accounts use the product interface only.
Generate an API credential
Set up access from the account's API settings, following the in-app help article for the exact steps.
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.
Why creators choose this tool
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 don't include API access; it starts at Pro.
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.
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 Pro and above, 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. Reference details live in the in-app API help articles rather than on this page.
People also search for
FAQ
AI Voice API — FAQ
Common questions users ask about the AI Voice API voice. If you need additional help, please contact us via the contact form or email us at support@vocallab.ai.
What plan do I need for API access?
Pro or above — Free and Lite accounts can generate and clone through the product interface but can't call the API directly.
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 on the Pro plan, rising to 120 requests per minute on the Max plan.
Related AI Voice Tools
Turn Text Into Humanlike Speech
Generate humanlike speech for voice assistants, IVR prompts, and conversational apps. Download MP3, adjust tone, free to try with no signup.
GeneralGenerate Voiceovers for Content Creators
Generate one script into voiceovers sized for YouTube, TikTok, and podcasts — pick tone per platform, download MP3 and SRT, no editing suite needed.
GeneralTurn Content Into Voiceover Audio
Layer a narrated voiceover track over footage you've already filmed. Paste your narration script, download MP3 timed to drop into your video edit.
GeneralGenerate Natural Sounding Voice from Text
Generate a natural sounding voice for long-form narration like audiobooks and full articles. Download MP3 and SRT, free to try, no signup.
GeneralGenerate Content Using Your Voice
Pick a single go-to AI voice and reuse it across every video, podcast, and post you publish, so your content always sounds like you. Free to try.
GeneralCreate AI Voice Avatar
Give a virtual presenter, digital assistant, or streaming persona a consistent AI voice. Pick a character voice, download MP3, free to try.