> This is a page from the ElevenLabs documentation. For a complete page index, fetch https://elevenlabs.io/docs/llms.txt. For the full documentation in a single file, fetch https://elevenlabs.io/docs/llms-full.txt. # Speech Engine > ElevenLabs provides APIs and SDKs for text to speech, voice cloning, speech to text, sound effects, voice isolator, voice changer, and conversational AI agents. Build voice-enabled applications with lifelike audio generation. ## Docs - [JavaScript SDK reference](https://elevenlabs.io/docs/eleven-api/resources/libraries/speech-engine/javascript-sdk-reference.md): Classes, methods, and events for the Speech Engine JavaScript SDK. - [Python SDK reference](https://elevenlabs.io/docs/eleven-api/resources/libraries/speech-engine/python-sdk-reference.md): Classes, methods, and events for the Speech Engine Python SDK.