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Convai: Conversational AI APIs for Interactive Characters

Convai equips developers with conversational AI APIs to build lifelike, speech-enabled characters for games, XR, and virtual worlds.

Overview

Convai is a conversational AI platform designed to breathe life into digital characters through advanced speech recognition, natural language understanding, generation, and text-to-speech technology. Built for creators working in gaming, the metaverse, and extended reality (XR), it gives NPCs and virtual characters the ability to perceive their surroundings, understand user intent, and respond in real time with natural, expressive dialogue. Beyond simple chatbot functionality, Convai focuses on embodiment—characters can see, react, lip-sync, and animate in sync with their speech, creating believable interactions in immersive environments. With multilingual support and a multimodal knowledge bank, developers can craft narrative-driven personas that serve as brand ambassadors, training simulators, or interactive companions in social virtual worlds. Whether you're building a next-gen game NPC or a virtual brand representative for a metaverse experience, Convai's blend of no-code tools and deep engine integrations makes it accessible to both technical and non-technical creators alike.

Capabilities & Features

  • Conversational AI
  • Speech Recognition
  • Language Understanding
  • Text to Speech
  • Game AI
  • Metaverse AI
  • Virtual Characters
  • NPCs
  • Multimodal AI
  • Spatial Intelligence
  • Avatar Studio
  • Unity Plugin
  • Unreal Engine Plugin

Core Features

  • Conversational AI Characters with real-time perception and action abilities
  • Multilingual language support for global audiences
  • Vision perception enabling characters to see and react to surroundings
  • High-quality lipsync for realistic speech animation
  • Embodied animations that sync with dialogue and actions
  • Multimodal knowledge bank for rich, narrative-driven character responses

Use Cases

  • Creating interactive brand representatives for marketing campaigns
  • Building AI-powered NPCs for games and social virtual worlds
  • Designing training and educational simulations with responsive characters
  • Developing metaverse and XR experiences with embodied AI companions
  • Powering speech-based games with conversational characters

Best For

  • Game developers
  • Metaverse creators
  • XR developers
  • Educators
  • Brand marketers
  • Virtual world designers

Pros

  • Combines speech recognition, NLU, generation, and TTS in one integrated platform
  • Real-time vision perception and lipsync create highly immersive character interactions
  • No-code tools make character creation accessible to non-technical users
  • Native plugins for Unreal Engine and Unity simplify game development workflows
  • Multilingual support broadens reach for global applications

Cons

  • Interaction-based pricing tiers can become costly for high-traffic applications
  • Flagship LLM and HQ voice usage are capped per plan, requiring careful usage monitoring
  • Character concurrency limits may restrict simultaneous user interactions on lower tiers
  • Payment and billing processes (upgrades, invoices) still rely on manual portal navigation

How to Use

Start by using Convai's no-code character creation tools to design your AI character's personality, backstory, and knowledge base. Then integrate the character into your project using available plugins for Unreal Engine or Unity, or connect via Convai's open APIs for custom implementations. Embody your character within an avatar, configure perception and action capabilities, and deploy it within your chosen game, app, or virtual environment for real-time interaction.

Frequently Asked Questions

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Pricing

Convai offers a free tier to test the platform, with paid plans ranging from $22/month for indie developers up to $499/month for large-scale business production, each with tiered interaction, concurrency, and voice usage limits.

Pricing data is provided as a summary. Visit the vendor website for full tier details.