ConvaiSDK and platform for real-time conversational NPCs in games and virtual worlds with voice, vision, and action APIs for Unity/Unreal.

4.8 (6)

Reviewed by Daniel Nikulshyn·Updated July 2026

Game Development Conversational AI NPCs Voice AI Unity Unreal Engine SDK Virtual Worlds

Overview

Convai is a platform and SDK for creating real-time conversational NPCs in games and virtual worlds. It offers voice, vision, and action APIs for integration with Unity and Unreal Engine. The platform allows developers to craft 3D AI characters that can interact through natural language and realistic behaviors within virtual environments. These characters possess multimodal perception, enabling them to see and hear their surroundings and respond with human-like dialogue, voice, gestures, and contextually appropriate actions. Convai's platform is designed to be intuitive and easy to use, with no-code creation tools and comprehensive support for developers. It powers XR worlds with conversational AI through both virtual humans and disembodied AI characters, enabling deeply interactive and immersive experiences. The platform is rated #1 by developers and is used in various applications, including XR training simulations, social virtual worlds, and role-play AI avatars.

Key features

Real-time conversational NPCs
Voice, vision, and action APIs
No-code creation tools
Integrations with Unreal Engine and Unity
XR training simulations
Social virtual worlds

Pricing

Model: Freemium
Category: AI Agent Development Platforms
Rating: 4.8 / 5 (6)

Use cases

Interactive NPCs in Video Games

Add real-time conversational NPCs to Unity or Unreal games that players can talk to using voice, enabling dynamic dialogue beyond scripted lines.

Immersive Virtual World Characters

Populate metaverse and VR experiences with AI-driven characters that see, speak, and act, creating richer social and exploratory interactions.

AI Companions with Vision and Actions

Build NPCs that perceive their environment via vision APIs and trigger in-game actions, allowing them to respond contextually to player behavior.

Training Simulations and Role-Play

Develop interactive training or educational simulations where users converse with virtual agents to practice scenarios in a 3D environment.

Pros & Cons

Pros

No-code creation tools for creators
Integrations with popular game engines
Multimodal perception and natural language abilities
Suitable for immersive experiences in games and virtual worlds

Cons

Limited information on pricing and scalability
No information on user reviews and ratings

Reviews

4.8

Average from 6 ratings.

Leila Hassan

Apr 17, 2026

Compared a few options

Evaluated this against two competitors. Where it wins: the integrations and the value for money is strong. On balance the feature set — especially the API — justifies the 5 stars for our use case.

Esther Adeyemi

Jan 6, 2026

Compared a few options

Evaluated this against two competitors. Where it wins: the core workflow and it saves real time. On balance the feature set — especially the automation — justifies the 5 stars for our use case.

Tariq Aziz

Dec 26, 2025

Skeptical, then convinced

I went in skeptical — most tools in this space overpromise. It actually delivers on the core workflow, and the value for money is strong caught me off guard. The mobile experience lags is why this isn't a perfect score, still, I'd recommend giving it a real trial.

Marcus Bell

Oct 11, 2025

Years in this space

I've evaluated a lot of these over the years. What stands out here is the dashboard — handled better than most — and it saves real time. Worth the time if this is your use case.

Devin Walker

Sep 21, 2025

Solid for our team

We rolled this out across the team last quarter and the value for money is strong. The API fits neatly into how we already work, and the automation removed a step we used to do by hand. but it has held up under daily use.

Omar Haddad

Aug 25, 2025

Years in this space

I've evaluated a lot of these over the years. What stands out here is the automation — handled better than most — and it is genuinely easy to set up. A few rough edges remain is my one real gripe. Worth the time if this is your use case.

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