Simli
Simli is a speech-to-video API for adding lip-synced AI avatar interactions to real-time AI agents.
What Simli is
Simli is a speech-to-video API for adding lip-synced AI avatar interactions to real-time AI agents. Its listed platforms are API and web, and it identifies use cases including sales assistants, mock interviews, language learning, coaching, customer service training and historical characters. The homepage lists latency under 300 ms, while noting that this estimate may not reflect an agent’s actual latency. Simli promotes high-resolution avatars with life-like facial expressions and offers custom and interactive avatars. Developers can use JavaScript and Python SDKs, follow recommended guides for LiveKit and Pipecat, or explore starter repositories for OpenAI and ElevenLabs integrations. Public free demos are available without an account. A free plan provides a monthly top-up of 50 minutes, though its details also state billed $10 on signup. Simli says its privacy policy permits using User Content and activity data to train models, conduct research and improve services. Users must be at least 18.
Good
- JavaScript and Python SDKs are documented.
- Recommended guides cover LiveKit and Pipecat.
- Public demos are available without an account.
- Custom and interactive avatars are available.
Watch out
- Latency under 300 ms is an estimate, not a guarantee.
- The Free plan details also say billed $10 on signup.
- User Content and activity data may be used to train models.
- Users must be at least 18.
Who it suits
Simli may suit developers building real-time agents with avatar interactions, including for the listed training, learning and service scenarios. Its SDKs and integration guides are aimed at people working with developer tools.
Verdict
Simli offers developer access to lip-synced avatar interactions, with SDKs and examples for several integrations. Review the Free plan’s signup billing note and the stated data-use policy before choosing it.
Plans and prices
From Simli's own pricing page, checked 9 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Free | Free | 50 minutes monthly top-up · $10 on signup; monthly top-up of 50 minutes |
The facts
Each one read from Simli's own pages, with the date it was checked.
What it does
- Avatar visuals
- The homepage promotes high-resolution avatars with life-like facial expressions and a new visual model.checked 9 Oct 2026
- Data protection
- Simli provides a Data Processing Agreement stating that it is established under Article 28 of the GDPR.checked 9 Oct 2026
- Data use
- The privacy policy says Simli uses User Content and activity data to train models, conduct research, and improve its services.checked 9 Oct 2026
- Eligibility
- The terms state that users must be at least 18 years old to use and subscribe to the services.checked 9 Oct 2026
- Examples
- The documentation lists starter repositories for OpenAI and ElevenLabs integrations.checked 9 Oct 2026
- Integrations
- The documentation offers recommended guides for LiveKit and Pipecat, plus Simli SDKs for developers who need control over their tech stack.checked 9 Oct 2026
- Latency
- The homepage lists Simli speech-to-video latency as under 300 ms and says the calculation is an estimate that may not reflect an agent’s actual latency.checked 9 Oct 2026
- Pricing model
- The homepage says paid plans offer volume discounts and flexible pay-as-you-go billing.checked 9 Oct 2026
- Product
- Simli is a speech-to-video API for adding lip-synced AI avatar interactions to real-time AI agents.checked 9 Oct 2026
- SDKs
- Simli documents JavaScript and Python SDKs.checked 9 Oct 2026
- Support
- The homepage invites users to join its Discord for support and community; its terms also list [email protected] for assistance.checked 9 Oct 2026
- Use cases
- Simli describes use cases including sales assistants, mock interviews, language learning, coaching, customer service training, and historical characters.checked 9 Oct 2026
The company
- Company
- Simli describes its team as a small group of researchers and engineers building human-computer interaction technology.checked 9 Oct 2026
- Headquarters
- Oslo, Norwaychecked 28 Sep 2026
Money
- Free demo
- The terms say public free demos can be tried without creating an account.checked 9 Oct 2026
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