Enterprise-grade text-to-speech, voice cloning, real-time transcription, and AI dubbing — all in one platform. Self-hosted or cloud. Open source.
400+
Neural Voices
70+
Languages
< 150ms
Latency
99.9%
Uptime SLA
Trusted by developers & creators worldwide
From a simple TTS call to a full enterprise voice platform — MoonCall covers every use case.
Convert any text to natural, expressive speech with 400+ neural voices. Control speed, pitch, emotion, and style.
Industry-leading transcription powered by Whisper AI. Word-level timestamps, multi-speaker diarization, 70+ languages.
Clone any voice with just 30 seconds of audio. Create custom voice models for your brand or characters.
Translate and dub videos into 70+ languages while preserving the original speaker's voice and timing.
Build intelligent voice agents with WebSocket streaming. Create customer service bots and virtual assistants.
Fully-documented REST API with API key management, usage analytics, and SDKs for Python, JavaScript, and Go.
Get the first audio chunk in under 150ms via WebSockets. Perfect for live, interactive voice experiences.
Deploy on your own infrastructure. Full data sovereignty, air-gapped deployments, HIPAA and GDPR compliant.
Transform any voice into another in real-time. Change gender, age, or accent while keeping natural prosody.
Create a free account. No credit card required. 10,000 free characters to start building immediately.
Pick from TTS, STT, voice cloning, dubbing, AI agents, or use the REST API to build anything.
Get studio-quality audio instantly. Download files or stream real-time via API into your product.
"Welcome to MoonCall — the most advanced open-source voice AI platform. We help developers and creators build amazing voice experiences in seconds."
Clean, well-documented REST API with API key management, rate limiting per tier, webhook callbacks, and real-time streaming WebSockets.
$ curl -X POST https://api.mooncall.ai/v1/tts/synthesize \
-H "Authorization: Bearer $API_KEY" \
-H "Content-Type: application/json" \
-d '{
"text": "Hello from MoonCall!",
"voice_id": "en-US-aria",
"speed": 1.0
}'Response
{
"audio_url": "/storage/audio/out_xyz.mp3",
"duration_seconds": 2.31,
"character_count": 23,
"processing_time_ms": 148
}Start free. Upgrade when you need it. All plans include core voice AI features.
Start building with voice AI
For creators & indie developers
For professional teams
For high-volume apps & enterprises
Need unlimited scale or on-premise deployment? Talk to Sales →
"MoonCall cut our audio production cost by 90%. Voice quality rivals ElevenLabs at a fraction of the price."
Sarah K.
Head of Content, TechCorp
"The self-hosted option was the deal-maker for us. Full data sovereignty, HIPAA-compliant, and incredible quality."
Dr. James M.
CTO, HealthTech Solutions
"We integrated MoonCall API in 2 hours. The docs are clean, the latency is crazy fast, and it just works."
Ahmed R.
Senior Engineer, Fintech Startup
Join thousands of developers and creators building voice-powered products with MoonCall. No credit card. No hidden fees.