ElevenLabs

AI text-to-speech platform producing natural-sounding voice audio with voice cloning, multilingual support, and emotional expression control. Best for workflows needing high-quality voice synthesis — narration, accessibility features, and voice-enabled applications. The leading TTS provider for naturalness — unlike Soniox (speech-to-text), ElevenLabs converts text to speech with human-like intonation. 7 endpoints available through Lava’s AI Gateway. See the ElevenLabs API docs for full documentation.

Supports both managed (Lava’s API keys) and unmanaged (bring your own credentials) mode.

Endpoints

Text to speech with streaming and timestamps

POST https://api.elevenlabs.io/v1/text-to-speech/{id}/stream/with-timestamps

Model	Input / 1M chars	Output / 1M chars
eleven_ttv_v3	$100.00	$100.00
eleven_multilingual_v2	$100.00	$100.00
eleven_multilingual_ttv_v2	$100.00	$100.00
eleven_monolingual_v1	$100.00	$100.00
eleven_multilingual_v1	$100.00	$100.00
eleven_flash_v2_5	$50.00	$50.00
eleven_flash_v2	$50.00	$50.00
eleven_turbo_v2_5	$50.00	$50.00
eleven_turbo_v2	$50.00	$50.00

Text to speech with streaming

POST https://api.elevenlabs.io/v1/text-to-speech/{id}/stream

Model	Input / 1M chars	Output / 1M chars
eleven_ttv_v3	$100.00	$100.00
eleven_multilingual_v2	$100.00	$100.00
eleven_multilingual_ttv_v2	$100.00	$100.00
eleven_monolingual_v1	$100.00	$100.00
eleven_multilingual_v1	$100.00	$100.00
eleven_flash_v2_5	$50.00	$50.00
eleven_flash_v2	$50.00	$50.00
eleven_turbo_v2_5	$50.00	$50.00
eleven_turbo_v2	$50.00	$50.00

Text to speech with timestamps

POST https://api.elevenlabs.io/v1/text-to-speech/{id}/with-timestamps

Model	Input / 1M chars	Output / 1M chars
eleven_ttv_v3	$100.00	$100.00
eleven_multilingual_v2	$100.00	$100.00
eleven_multilingual_ttv_v2	$100.00	$100.00
eleven_monolingual_v1	$100.00	$100.00
eleven_multilingual_v1	$100.00	$100.00
eleven_flash_v2_5	$50.00	$50.00
eleven_flash_v2	$50.00	$50.00
eleven_turbo_v2_5	$50.00	$50.00
eleven_turbo_v2	$50.00	$50.00

Convert text to speech

POST https://api.elevenlabs.io/v1/text-to-speech/21m00Tcm4TlvDq8ikWAM

Model	Input / 1M chars	Output / 1M chars
eleven_ttv_v3	$100.00	$100.00
eleven_multilingual_v2	$100.00	$100.00
eleven_multilingual_ttv_v2	$100.00	$100.00
eleven_monolingual_v1	$100.00	$100.00
eleven_multilingual_v1	$100.00	$100.00
eleven_flash_v2_5	$50.00	$50.00
eleven_flash_v2	$50.00	$50.00
eleven_turbo_v2_5	$50.00	$50.00
eleven_turbo_v2	$50.00	$50.00

SDK
cURL

const data = await lava.gateway('https://api.elevenlabs.io/v1/text-to-speech/21m00Tcm4TlvDq8ikWAM', { body: {"text":"Hello world","model_id":"eleven_flash_v2_5"} });

curl -X POST "https://api.lava.so/v1/forward?u=https%3A%2F%2Fapi.elevenlabs.io%2Fv1%2Ftext-to-speech%2F21m00Tcm4TlvDq8ikWAM" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text":"Hello world","model_id":"eleven_flash_v2_5"}'

Transcribe speech to text

POST https://api.elevenlabs.io/v1/speech-to-text

Model	Input / minute	Output / minute
scribe_v1	$0.004	Free
scribe_v1_experimental	$0.004	Free

SDK
cURL

const data = await lava.gateway('https://api.elevenlabs.io/v1/speech-to-text', { method: 'POST' });

curl -X POST "https://api.lava.so/v1/forward?u=https%3A%2F%2Fapi.elevenlabs.io%2Fv1%2Fspeech-to-text" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY" \
  -H "Content-Type: application/json"

List available voice models

GET https://api.elevenlabs.io/v1/models — Free

SDK
cURL

const data = await lava.gateway('https://api.elevenlabs.io/v1/models', { method: 'GET' });

curl "https://api.lava.so/v1/forward?u=https%3A%2F%2Fapi.elevenlabs.io%2Fv1%2Fmodels" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY"

Initiate a conversational AI outbound phone call via Twilio

POST https://api.elevenlabs.io/v1/convai/twilio/outbound-call — $1.50 / request

SDK
cURL

const data = await lava.gateway('https://api.elevenlabs.io/v1/convai/twilio/outbound-call', { method: 'POST' });

curl -X POST "https://api.lava.so/v1/forward?u=https%3A%2F%2Fapi.elevenlabs.io%2Fv1%2Fconvai%2Ftwilio%2Foutbound-call" \
  -H "Authorization: Bearer $LAVA_SECRET_KEY" \
  -H "Content-Type: application/json"

Get Started

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Comparisons

Endpoints

Text to speech with streaming and timestamps

Text to speech with streaming

Text to speech with timestamps

Convert text to speech

Transcribe speech to text

List available voice models

Initiate a conversational AI outbound phone call via Twilio

Next Steps

All Providers

Forward Proxy

​Endpoints

​Text to speech with streaming and timestamps

​Text to speech with streaming

​Text to speech with timestamps

​Convert text to speech

​Transcribe speech to text

​List available voice models

​Initiate a conversational AI outbound phone call via Twilio

​Next Steps

All Providers

Forward Proxy

Endpoints

Text to speech with streaming and timestamps

Text to speech with streaming

Text to speech with timestamps

Convert text to speech

Transcribe speech to text

List available voice models

Initiate a conversational AI outbound phone call via Twilio

Next Steps