Freemium

Convai

Name: Convai
Price: 29 USD
Author: Challenging Voice

Convai gives game studios and virtual-world builders an API for lifelike 3D AI characters that see, hear, and hold spoken conversations.

4.2 AI Infrastructure & Agent Tooling

4.2 Very good 4.2

Bottom line: Convai is a strong ai infrastructure & agent tooling tool, best known for multimodal AI characters with sight, hearing, and voice for Unreal and Unity. It has a free plan.

Deep native integration with the two most-used game engines Interaction-based overage charges make cost harder to predict at scale

Reviewed by Challenging Voice Editorial · Updated Aug 2026 How we rate

PricingFrom $29/mo

Free planYes

CompanyConvai Technologies Inc.

PlatformsAPI, Web

Best forAI Infrastructure & Agent Tooling

Founded2022

Visits2

Last reviewedAug 2026

UpdatedAug 2026

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Overview

Convai is a conversational AI infrastructure company for virtual worlds, founded in April 2022 by Purnendu Mukherjee and Prashant Mishra and based in San Jose, California. Mukherjee previously worked as a deep learning engineer at NVIDIA on conversational AI and 3D avatar work, and the company raised a $5 million seed round in September 2022.

Convai ships as an SDK and API that plugs into Unreal Engine and Unity, giving non-player characters multimodal perception, sight and hearing, plus voice, gesture, and memory across a conversation rather than scripted dialogue trees. Developers upload knowledge documents and personality settings per character, and Convai handles the speech recognition, language model reasoning, and text-to-speech pipeline behind each NPC.

The tool is built for game studios, XR developers, and enterprise simulation teams rather than casual users, with over 1,000 studios and indie developers building on it since launch. Pricing runs Free for prototyping, $29 a month for the Indie Dev tier, up through $1,199 a month for Business, with custom Enterprise and revenue-share Partner plans for larger deployments.

Key features

Multimodal AI characters with sight, hearing, and voice for Unreal and Unity
Per-character knowledge base upload for grounded, on-topic dialogue
Memory across conversations rather than one-off scripted responses
No-code Convai Sim platform for building interactive simulations
Character Crafting APIs for programmatic control of NPC behavior
Credit-based interaction pricing that scales with usage beyond plan quotas

Screenshots & demo

Demo video

Screenshots

Pricing

Convai has a free plan, and paid plans start at $29/mo.

Pricing modelFreemium
Starting priceFrom $29/mo
Free planYes

Visit Convai

Pricing is provided as a guide. Check the official site for the latest plans.

Pros & cons

Pros

Deep native integration with the two most-used game engines
Free tier lets solo developers prototype before committing to a paid plan
Founding team's NVIDIA conversational-AI background shows in the product depth
Active studio adoption (1,000+) signals the tooling holds up in production

Cons

Interaction-based overage charges make cost harder to predict at scale
Business and Enterprise tiers require a real budget most hobbyists lack
Best suited to teams already building in Unreal or Unity, less useful outside game engines
Knowledge size caps on lower tiers limit how much lore a character can draw on

How it compares

Tool	Rating	Free	From	Best known for
Convai (this tool)	4.2	Yes	$29/mo	Multimodal AI characters with sight, hearing, and voice for Unreal and Unity
Surge AI	4.3	No	—	Data annotation and reinforcement learning from human feedback for AI training
Browserbase	4.5	Yes	$20/mo	Real browser instances, not headless simulation
Groq	4.3	Yes	Free	Custom LPU chips designed specifically for large language model inference

Our verdict

4.2 / 5 4.2

Convai is a strong ai infrastructure & agent tooling tool, best known for multimodal AI characters with sight, hearing, and voice for Unreal and Unity. It offers a free plan, with paid upgrades from $29/mo.

What makes it different: Convai stands out for multimodal AI characters with sight, hearing, and voice for Unreal and Unity.

How we score it

Overall 4.2

Value for money 4.7

Feature depth 4.9

Popularity 3.7

Best for ProfessionalsTeamsCreatorsCurious learners

Frequently asked questions

What is Convai?

Convai is an ai infrastructure & agent tooling tool listed in the Challenging Voice directory. Convai gives game studios and virtual-world builders an API for lifelike 3D AI characters that see, hear, and hold spoken conversations.

Is Convai free?

Yes, Convai offers a free plan. Paid plans unlock more features and higher usage limits, starting at $29/month.

How much does Convai cost?

Convai starts at $29 per month. See the pricing plans above for full details.

What are the best Convai alternatives?

Popular alternatives to Convai include xpander.ai, AI Squared, and Novu Connect. Browse them all in the AI Infrastructure & Agent Tooling category.

Is Convai any good?

Convai scores 4.2 out of 5 based on our editorial review.