Convai

Convai is a platform for creating interactive AI characters and non-player characters for games, virtual worlds, training simulations, and XR. Characters can perceive their surroundings and respond with dialogue, voice, gestures, and actions suited to the context. No-code creation tools are available through a browser or local system. Character options include backstories, personality and style settings, a Knowledge Bank, narrative design, actions, more than 500 voice options, and support for 60 languages. Convai lists integrations for Unity, Unreal Engine, 3JS, and other game engines, alongside plugins, APIs, tutorials, and documentation. It runs on Android, iOS, and the web, and API access is available. The Free plan includes 100 interactions per month, 60 minutes of cloud-rendered Avatar Studio and Convai Sim, and one concurrent character session. Interaction quotas reset each billing cycle, and unused interactions do not roll over. Enterprise lists custom deployment, SLAs, data ownership, compliance, and priority support.

Convai combines character creation tools with game engine integrations, APIs, and options for dialogue, voice, gestures, and contextual actions. The Free plan has defined interaction and rendering limits, while Enterprise lists custom deployment and support options.

Convai suits creators and developers building character-driven games, virtual worlds, training simulations, or XR experiences. Its browser and local creation tools and game engine integrations may suit teams with different development setups.

Overview

Convai is a platform for building conversational AI characters for games, virtual worlds, training simulations, and XR. It suits developers and creators who want characters to respond to their surroundings with dialogue and actions. Its free tier offers a way to start, while paid plans raise usage and concurrency limits for larger projects.

Key features

Convai combines browser-based and local no-code character creation with integrations for Unity, Unreal Engine, 3JS, and other game engines. Plugins, APIs, tutorials, and documentation support projects across those environments; its documentation covers web plugins, modding frameworks, integrations, and API reference. API access and speech controls, including SSML, give developers additional ways to shape how characters communicate.

Character tools include backstories, personality and style customization, narrative design, a Knowledge Bank, and actions. Multilingual support spans 60+ languages, with 500+ voice options. Characters can perceive their surroundings and respond through voice, gestures, dialogue, and contextually appropriate actions, making Convai better suited to interactive character experiences than to voice generation alone.

The platform’s support resources include a forum, sample code, tutorials, documentation, and a support team available 24/7. That breadth can help developers working through engine integrations, though the platform still asks them to build within a character and game-development workflow.

Pricing

Convai is freemium. Its Free plan costs nothing and includes 100 monthly interactions, 60 minutes of cloud-rendered Avatar Studio and Convai Sim, and one character session concurrency. That is enough to explore the tools or support a small prototype, but the interaction and rendering allowances are limited. Interaction quotas reset at the start of each billing cycle, and unused interactions do not roll over.

Indie Dev is $2,922 a month, with a billed Yearly option shown as $22/mo. It raises the quota to 3,000 monthly interactions and 600 cloud-rendered minutes, while keeping concurrency at one character session. It fits a solo developer with a modest workload, but does not increase simultaneous character sessions.

Professional is $9,969 a month, with a billed Yearly option shown as $69/mo. It includes 10,000 monthly interactions, 2,400 cloud-rendered minutes, and three concurrent character sessions, making it a more practical step for projects serving multiple simultaneous sessions.

Scale is $499,299 a month, with a billed Yearly option shown as $299/mo. Its 50,000 monthly interactions, 10,200 cloud-rendered minutes, and 15 concurrent sessions target higher-volume deployments. Business is $1,199,499 a month, with a billed Yearly option shown as $499/mo and a limited-time offer; it increases those allowances to 125,000 interactions, 21,000 rendered minutes, and 30 concurrent sessions.

Enterprise uses custom pricing and adds custom deployment, SLAs, priority support, and data ownership, security, and compliance options. It is aimed at organizations with deployment and support requirements beyond the usage-based plan tiers.

Platforms

Convai supports Android, iOS, web, and API access. Its game engine integrations include Unity and Unreal Engine, with 3JS and other integrations also available.

Who it's for

Convai is a strong fit for developers and creators making character-driven games, virtual worlds, training simulations, or XR experiences. It is most compelling when characters need to react with more than spoken lines, and when engine integrations, APIs, and character customization matter. A reader seeking a standalone text-to-speech tool may find its interactive character focus broader than needed.

Pros and cons

• Pros: Character creation combines backstories, personality, narrative design, knowledge, and actions, giving developers several tools for shaping an interactive character.
• Pros: Unity, Unreal Engine, web, API, and other integration paths support projects across game and virtual-world environments.
• Pros: The free plan includes cloud-rendered tools and 100 monthly interactions, so creators can begin without a subscription.
• Cons: The free allowance is capped at 100 interactions and 60 rendered minutes, with only one character session at a time.
• Cons: Unused interactions expire when the billing cycle resets, so variable workloads can leave paid quota unused.
• Cons: The listed paid tiers have substantial monthly amounts, and Enterprise requires custom pricing, which may make costs harder to assess before choosing a plan.

Alternatives

For a different focus, Adobe Firefly is a freemium option with a free plan that includes limited daily generations. Neocortex is another freemium choice, with a free plan for personal use that includes two characters, two conversation flows, 200 monthly credits, one API key, and one knowledge base file upload. Choose between them and Convai based on the character and integration workflow that fits the project.

Speechify, Acapela Group, ReadSpeaker, Google Cloud Text-to-Speech, and Cartesia Sonic are alternatives to compare for voice or text-to-speech needs. Algebras AI Game Localization Agent is another option to consider for game localization.

Verdict

Choose Convai if you are building a game, virtual world, simulation, or XR experience and need customizable characters that can respond with dialogue, voice, gestures, and actions. Its engine integrations and layered character tools are the main reasons to choose it. Look elsewhere if you need a focused speech tool, or if the free plan’s interaction and rendering caps are too low for your project.