What is Text-to-Speech?
Text-to-Speech turns written content into natural, expressive audio that can be generated instantly and delivered at production scale.
Production-ready audio quality
Broadcast-grade output for podcasts, audiobooks, and game characters


Multilingual and adaptive
15 languages. Automatic detection. Seamless code-mixing mid-sentence.
Instant voice cloning
Clone any voice in under 10 seconds. no professional equipment required

Real-time at scale
Maintain 20+ concurrent streams with 100ms latency

From model proof to
production implementation
Check model specifications, available voices and languages, custom voices, and streaming before you build.
Lightning model
Review supported capabilities, performance, and model specifications.
Voices & languages
Upload your docs, FAQs, product specs, and legal files so your agent can answer from grounded knowledge.
Instant voice cloning
Bring voice agents to real phone calls using Smallest-managed numbers or your telephony setup.
Streaming speech
Let agents take action in your existing stack instead of only answering questions.
Bring your own voice
Create an approved voice clone from a short sample for a consistent brand, narrator or character voice.
API
SDK
Visual tools
Preparing production reference audio Review voice cloning best practices.
Generate your first audio response with the Text-to-Speech quickstart.
Designing a real-time experience? See how streaming TTS for developers changes latency, UX, and cost.
One speech model, many production paths
Match the production workflow and final destination, then use the nearest implementation path.
Voice agents
Give live conversational systems a natural, low-latency response layer.
Audiobooks
Turn written catalogs into consistent long-form narration.
Accessibility
Build clear read-aloud experiences for websites and digital products.
A text-to-speech API that stays out of the way
Send text and receive streamable audio through a documented API for web, mobile, telephony or backend workflows.
Web
Browser experiences
Mobile
Native applications
Telephony
Real-time calls
Backend
Automated workflows
Explore the text-to-speech category
Start with Lightning, then narrow the journey by language, production use case, or implementation question.
Speech generation by use case
Follow a page built around the output you need to create.
Text-to-speech guides
Build topical depth around quality, implementation, and evaluation.
Frequently
asked questions
Can I try text to speech online?
Is Lightning suitable for real-time agents?
Can I use my own voice?
Is there a text-to-speech API?

















