Last updated 08-09-2026
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Convai
Convai lets you build 3D AI characters that talk, see, and act inside games, XR apps, and virtual worlds. You craft a character's personality, backstory, and knowledge in a browser studio, then deploy it through APIs and plugins for Unity and Unreal Engine. The same character can run on websites, mobile apps, VR headsets, and physical installations.
Most chatbot builders output text in a flat window. Convai focuses on embodied NPCs that need spatial awareness, lip sync, gesture animations, and real-time voice inside a 3D scene. That narrow engine-first approach trades a generic website widget for deep integrations with game engines, avatar systems, and multimodal perception.
Game developers, XR training teams, and brand marketers use Convai for role-playing NPCs, virtual brand reps, and training simulations. The free tier includes 100 interactions per month, and paid Indie Dev plans start at $22 per month on yearly billing with 3,000 monthly interactions.
Free tier includes 100 character interactions per month for platform testing
Indie Dev plan at $22 per month (yearly billing) includes 3,000 monthly interactions
Supports 65+ languages and 500+ voice options for character dialogue
Unity and Unreal Engine plugins embed NPCs directly inside game scenes
Cloud Avatar Studio and Convai Sim add vision-based perception in the browser
Knowledge banks let you upload documents that characters reference during chats
Deep Unity and Unreal Engine plugins for in-scene NPC deployment
Browser-based Avatar Studio and Convai Sim need no local install to prototype
65+ languages and 500+ voices cover global character dialogue needs
Free tier with 100 monthly interactions supports proof-of-concept builds
Character concurrency limits simultaneous users, starting at 1 on the Free plan
Flagship LLM interactions have separate caps below the total interaction quota
Enterprise features like custom voice cloning require contacting sales
Is Convai free to use?
Yes. Convai offers a Free plan at $0 per month with 100 interactions per month, access to the character creation tools, and 1 hour of cloud Avatar Studio time. Paid tiers such as Indie Dev start at $22 per month on yearly billing.
What game engines does Convai support?
Convai provides plugins and SDKs for Unity and Unreal Engine, plus integrations with web engines like PlayCanvas and three.js. Developers can also use open APIs documented at docs.convai.com for custom deployments.
How does Convai count an interaction?
Convai counts one interaction each time a user sends input and the AI character responds in text or voice. A greeting followed by a follow-up question counts as two separate interactions against your monthly quota.
Can Convai characters use custom avatars?
Yes. Convai is avatar-agnostic and works with custom 3D models, including low-poly or high-detail characters. For lip sync, the avatar needs OVR, ARKit, or Reallusion blendshapes as documented in the SDK guides.
What is character concurrency in Convai?
Character concurrency in Convai is the number of users who can talk to your NPCs at the same time on one API key. The Free plan allows 1 concurrent session, while the Scale plan supports 15 concurrent character sessions.
Does Convai support multiple languages?
Yes. Convai supports 65+ languages and 500+ voice options for character dialogue. Flagship LLM usage has separate monthly caps per plan, such as 1,500 flagship interactions on the Indie Dev tier.