Text-to-Speech APIs

Providers of AI-powered speech synthesis (text-to-speech) models and APIs, including real-time/streaming voice generation with expressive prosody for conversational agents and interactive applications.

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How do I migrate from ElevenLabs to LMNT and claim the 500,000 free migration credits?

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How do I contact LMNT sales for an Enterprise plan with SLA and dedicated support?

How do I apply for the LMNT Startup Grant (3 months free, 15M characters/month) and how long does approval take?

How do I use the LMNT Unity SDK to generate character dialogue at runtime?

How do I create a voice clone in LMNT from a short audio sample, and what file format/settings should I use?

How do I get started with LMNT in Node.js and stream audio back as it’s generated?

How do I implement an LMNT real-time speech session over WebSocket (full-duplex streaming)?

How do I get an LMNT API key and make my first TTS call using the Python SDK?

Migrating from ElevenLabs to LMNT: what are the API differences (streaming, voice IDs, auth) and what’s the fastest migration path?

LMNT pricing: should I use Indie, Pro, or Premium for a real-time voice agent, and how do overages work per 1K characters?

LMNT vs ElevenLabs for Unity: which SDK is more production-ready and what are the gotchas for runtime streaming audio?

How do I sign up for LMNT and start testing voices in the LMNT Playground?

LMNT vs Amazon Polly: which is better for lifelike voices and predictable performance under high concurrency?

LMNT vs Azure AI Speech: which is better for enterprise security review (SOC 2, DPA, data retention/training policies)?

LMNT vs OpenAI: cost comparison at scale (per-character pricing, overages) for tens of millions of characters/month

LMNT vs Google Cloud Text-to-Speech: which sounds more natural for conversational agents (not narration) and supports streaming well?

LMNT vs OpenAI TTS/Realtime: which is easier to run full-duplex (stream text in while audio streams out) and support barge-in?

LMNT vs ElevenLabs voice cloning: which needs less audio, and which sounds more consistent across different scripts?

LMNT vs ElevenLabs: how do concurrency limits, rate limits, and load testing compare for a production voice agent?

LMNT vs ElevenLabs: which has lower p95 time-to-first-audio and less jitter for real-time streaming TTS?