The Elevenlabs Sound Effect V2 API is the upgraded version of the Elevenlabs Sound Effect Model, launched in September 2025. It supports 20+ second clips , seamless looping, and 48 kHz audio, making text to sound effect generation more accurate and production-ready.
The text describing the sound effect to generate
Whether to create a sound effect that loops smoothly
Duration in seconds (0.5-22). If None, optimal duration will be determined from prompt
How closely to follow the prompt (0-1). Higher values mean less variation
Output format of the generated audio. Formatted as codec_sample_rate_bitrate
Explore different use cases and parameter configurations
Complete guide to using
Access the Elevenlabs Sound Effect V2 API on Kie.ai — transform text to sound effect prompts into 48 kHz, royalty-free AI audio for your next project.
The Elevenlabs Sound Effect Model is a next-generation AI sound effect generator that transforms natural-language prompts into realistic and royalty-free AI Sound Effects. From cinematic braams and whooshes to ambient soundscapes and Foley details, it enables creators to produce unique audio without relying on static sound libraries. In September 2025, ElevenLabs introduced Elevenlabs Sound Effect V2 (Elevenlabs SFX V2), the latest version of its model. This upgrade brought longer clip generation (up to 30 seconds), seamless looping, 48 kHz professional audio quality, and improved prompt adherence—features that significantly expand the possibilities for text to sound effect workflows. The Elevenlabs Sound Effect V2 API (also referred to as Elevenlabs SFX V2 API) makes these advancements accessible to developers. At Kie.ai, we provide access to the Elevenlabs Sound Effect V2 API through a free testing playground (login required) and SDK integration options, allowing teams to experiment with text to SFX generation before scaling into production.
The Elevenlabs Sound Effect V2 API enables developers to generate custom AI sound effects directly from natural-language prompts. This text to sound effect approach makes it easy to build unique Foley sounds, impacts, or ambient textures without relying on static libraries.
With 48 kHz professional audio output in MP3 and WAV formats, the Elevenlabs SFX V2 API delivers sound effects that meet production standards. These high-quality results are ready for integration into games, films, podcasts, and interactive applications.
The Elevenlabs Sound Effect V2 API supports a loop parameter, enabling the creation of flawless, seamless loops. This feature is ideal for generating continuous ambience, VR/AR environments, and immersive game audio.
All sounds generated with the Elevenlabs Sound Effect V2 API are royalty-free AI sound effects, ensuring safe use in commercial projects. Combined with SDK support for JavaScript and Python, the API offers smooth integration for both small-scale prototypes and enterprise-level production pipelines.
Building on earlier releases, the Elevenlabs Sound Effect V2 introduces refined audio quality, extended duration, and seamless looping for more reliable sound design workflows.
The Elevenlabs Sound Effect V2 API now supports clips up to 30 seconds long, compared to roughly 22 seconds in V1. This extended duration allows for richer ambience and more complex audio textures.
The Elevenlabs SFX V2 API has improved alignment with text to sound effect prompts, ensuring generated audio more closely matches the user’s intent.
The new loop parameter in the Elevenlabs Sound Effect V2 API makes it possible to create seamless, repeating sound effects—perfect for continuous backgrounds and interactive experiences.
Upgraded to 48 kHz professional audio, the Elevenlabs Sound Effect V2 API delivers cleaner, sharper, and more detailed sound effects than V1, making them production-ready for commercial projects.
To begin using the Elevenlabs Sound Effect V2 API, register a free account on Kie.ai and log in. Once inside the dashboard, you can generate your API key, which is required for secure authentication. You can also explore our login-required playground to test text to sound effect prompts before calling the API directly.
After obtaining your API key, you can access the free playground on Kie.ai to try the Elevenlabs SFX V2 API. Enter prompts, adjust duration or loop settings, and instantly preview generated AI sound effects. This free testing step helps you fine-tune text to SFX results before adding the API into your workflow.
After testing, start making authenticated calls to the Elevenlabs Sound Effect V2 API using your API key. Send text to SFX prompts and receive audio files for integration into your workflow.
Once you’re comfortable with the outputs, apply the Elevenlabs SFX V2 API to your real projects. The Elevenlabs Sound Effect V2 API is suitable for creating royalty-free AI sound effects for games, films, podcasts, and other commercial applications.
The Elevenlabs Sound Effect V2 API performs best when prompts are concise and specific. Instead of writing “a sound in the forest with water and animals”, try “forest ambience with light rain and bird chirping”. Focused prompts guide the model to generate cleaner AI sound effects.
When working with the Elevenlabs SFX V2 API, include common sound design terms like whoosh, braam, impact, or ambience. These keywords improve the accuracy of text to sound effect outputs and help the API match industry-standard audio expectations.
For Foley or short effects, keep duration settings low. For immersive soundscapes, extend to 20–30 seconds. The Elevenlabs Sound Effect V2 API adapts better when the duration aligns with the sound type, reducing noise and improving quality.
Don’t stop at the first output. Generate multiple variations with the Elevenlabs SFX V2 API and compare results. Iterating with small prompt changes—like adding “metallic” or “soft”—often produces a more polished sound.
Developers use the Elevenlabs Sound Effect V2 API to create seamless loops, Foley effects, and ambient audio, generating immersive game environments with reliable text to SFX outputs.
The Elevenlabs SFX V2 API produces cinematic braams, impacts, and atmospheric layers, giving filmmakers high-quality AI sound effects that enhance storytelling and emotional depth in trailers or short films.
Podcasters and creators leverage the Elevenlabs Sound Effect V2 API for royalty-free background ambience and transitions, speeding up editing workflows and ensuring professional text to sound effect quality for online content.
Using the Elevenlabs SFX V2 API, developers build continuous 48 kHz loops and immersive ambiences, producing realistic spatial AI sound effects that heighten interactivity and presence in VR and AR applications.
Yes. All sounds generated through the Elevenlabs Sound Effect V2 API are royalty-free AI sound effects, meaning you can safely use them in commercial projects without additional licensing costs.
The Elevenlabs SFX V2 API supports clips up to 30 seconds, an upgrade from ~22 seconds in V1. This longer duration is ideal for creating immersive soundscapes and ambient audio textures.
The Elevenlabs Sound Effect V2 API provides outputs in both MP3 and WAV formats at 48 kHz quality, ensuring flexibility for professional workflows in games, film, and interactive media.
Yes. An API key is required for authentication when accessing the Elevenlabs SFX V2 API. You can generate this key by signing up and logging in on Kie.ai.
The Elevenlabs Sound Effect V2 API features improved prompt adherence, meaning text to sound effect instructions produce more accurate and predictable results, with reduced noise and closer alignment to user intent.
If you encounter issues or have questions about the Elevenlabs Sound Effect V2 API, you can contact our team at [email protected] or join our community on Discord for assistance.