Convai
FreemiumBuild spatially aware 3D AI characters that see, hear, converse and act inside Unity, Unreal Engine and XR worlds.
What is Convai?
Convai builds conversational AI characters that do more than talk. Its defining feature is multimodal perception: characters can see and hear their surroundings, then respond with dialogue, voice, gestures and contextually appropriate in-world actions, which makes them genuinely spatially aware rather than a chat box wearing a 3D model. The platform pairs a browser based no-code creation flow, where narrative designers define personality, backstory and knowledge bases without engineering support, with production plugins for Unreal Engine, Unity, PlayCanvas and 3JS plus open APIs. Recent releases pushed hard on the three things that break immersion: a WebRTC pipeline that all but eliminates response latency, long term memory so characters recall conversations across separate sessions, and NeuroSync real time lip sync that drives blend shapes from audio analysis, including for MetaHumans in Unreal. Characters are avatar agnostic, so the same character brain works across different models and platforms. Alongside gaming, Convai is widely used for XR training simulations, enterprise onboarding and brand avatars, with content boundary controls that let developers block topics falling outside defined parameters.
Key Features
Integrations
How to Use Convai
✅ Best For
- Developers who need NPCs that perceive the scene around them, not just characters that respond to typed text
- Unreal MetaHuman users who want real time lip sync and facial animation driven directly from generated speech
- Narrative designers without engineering support, since character creation happens entirely in a no-code browser tool
- XR and training simulation teams building roleplay scenarios where a trainee talks to a character face to face
- Studios that want a clear published pricing ladder from a free tier up to business plans rather than a sales call
❌ Not For
- Teams needing offline characters, because perception, reasoning and voice run as cloud services
- Projects requiring extensive multilingual support, as the platform is primarily built around English
- Developers who want a mobile authoring app, since character creation is browser and desktop based
- Games where NPCs are simple vendors or enemies, where scripted dialogue remains far cheaper to run
- Studios needing art or 3D model generation, as Convai supplies the character brain rather than the avatar itself
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Pricing
- ✓Free tier for developers to build and test characters
- ✓Higher interaction limits
- ✓plugin access and expanded character slots
- ✓Production usage volumes
- ✓advanced features and priority support
- ✓High volume interactions for shipped titles and larger deployments
- ✓Enterprise capacity
- ✓dedicated support and custom deployment options
Prompts to Try
A museum guide who notices which exhibit the visitor is standing near
A tavern keeper who reacts to the weapon the player is carrying
A factory safety trainer who corrects a trainee's procedure in real time
A shopkeeper who comments when the player picks up an item off the shelf
Two guards who discuss the player between themselves after she walks past