Convai

Convai gives game characters a brain: conversational AI NPCs that can speak, listen and act inside game worlds.

Overview

Convai provides a character creation and runtime platform where developers define a character’s persona, knowledge and voice, then wire it into engines like Unreal and Unity. Players talk to these NPCs with voice or text and receive spoken, in-character responses with lip sync. Convai also supports action generation, letting characters trigger game events from conversation. Studios use it to move NPCs from scripted dialogue trees to open-ended interaction.

Key Features

• Character studio for persona, backstory and knowledge design
• Voice-to-voice conversation with low-latency response
• Lip sync and facial animation integration
• Action generation that triggers in-game events from dialogue
• Plugins for Unreal Engine, Unity and NVIDIA ACE workflows
• Scalable multi-player session support

Pricing

Convai offers a free tier for prototyping with usage limits, then paid plans scaling by conversation minutes and characters.

Who Is It For

Game studios and developers building interactive NPC experiences, virtual worlds and educational simulations.

FAQ

Is Convai free to use?

Yes, a free tier supports development and testing; production usage requires a paid plan.

Does Convai offer an API?

Yes. Convai is API-driven, with SDKs and plugins for major game engines.

How does Convai compare to alternatives?

Convai combines conversation with in-game action execution, going beyond chat-only character platforms.

Practical Use Cases

Studios build RPG shopkeepers who answer open-ended questions in character, with voices generated for each persona. Training simulations use conversational characters for soft-skills practice. Virtual worlds add NPCs that react to player speech in real time. Developers wire character actions to gameplay events, letting dialogue trigger quests.

Limitations & Alternatives

Latency and cost scale with player sessions, and guardrails are needed to keep characters on-topic. Voice quality varies by language. Inworld AI, NVIDIA Charisma-style platforms and custom LLM stacks are alternatives.

Integrations & Deployment

Convai deploys through engine plugins for Unreal and Unity plus APIs for custom stacks. Character creation happens in the Convai studio, defining persona, knowledge and voice, then linking the character to game sessions. Runtime services handle speech and language processing, with options to tune latency and cost per use case. Onboarding includes technical support for engine wiring and guardrail configuration. Ongoing operations monitor conversation quality, update character knowledge and scale session capacity as player counts grow.

Bottom Line

Convai is one of the most practical routes to conversational NPCs today, with engine plugins that shorten integration work considerably. Studios experimenting with open-ended character interaction should prototype here first. Budget for latency tuning and guardrail design before promising player-facing voice interaction at scale.