Godot SDK (beta)Beta

AI NPCs for Godot 4

Most AI character platforms skip Godot. Neocortex brings visually designed, voiced characters to Godot 4 projects.

Get started for free

Free plan
No credit card
Unity, Unreal, Godot and Web API

Cora, the Neocortex AI character, waving hello

4
ways to integrate
Unity, Unreal, Godot, Web API
20+
languages
set per character
10 s
to clone a voice
or design one from text
€0
to start
free plan and editor testing

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From zero to a talking character in Godot

1
Design your character
Build personality, knowledge, emotion and actions in the visual editor, and test it in the browser for free.
2
Add the addon
Copy the Neocortex addon into your project's addons folder and enable it in Project Settings.
3
Talk to it
Add your API key and character ID, then send text or voice from your scene.

Requirements

Godot 4.x
A free Neocortex account and API key

Read the Godot docs

What you get

Built for Godot developers

Text and voice

Send text or voice and get text or voice back.

Chat history

Keep conversation context across turns.

Events

React in your scene when characters reply or trigger actions.

Visual editor

Characters are designed in the browser, not hard-coded.

Move engines freely

The same character works in Unity, Unreal and the Web API.

Shape the roadmap

The Godot SDK is in beta; Godot developers' feedback decides what comes next.

How it works

Characters you design, not prompts you babysit

Personality, emotion, knowledge and world are nodes you connect, not prompts you rewrite.
Intents and actions turn what a player says into something your game does.
Test every character in the browser for free before it reaches your engine.

The Neocortex visual character editor with emotion, personality, language, voice, knowledge, intent and action nodes — A bartender character in the Neocortex editor.

What Our Customers Say

Discover what creators are saying about building with Neocortex.

After trying several Smart NPC providers, I came across Neocortex while looking for a stateful conversational AI solution for our Virtual Education platform. Neocortex stood out and topped all our key considerations.

Vallikat Peethamber

Managing Director

Neocortex opened scalable solutions for our VR platform, letting us create scenarios that make training more immersive. Keeping AI agents within clear boundaries is hard, but Neocortex handles it very well and makes customization easy.

Ottó Farkas

IT Specialist / Project Manager

In classroom practice, Neocortex and its action-based mechanism provide students with an out-of-the-box way to bridge conversational agents into software and hardware-based interaction design workflows.

Hongming Li

Lecturer / Instructor

I found out about Neocortex while I was working on my final-year project, and the platform's ease of integration and accessibility enabled me to seamlessly implement smart NPCs in my application. Highly recommend it!

Angela Pellillo

Backend Developer

Neocortex was the first step in bringing LLM-powered NPCs into a real Unity3D prototype, fast-tracking development and growing my TikTok account from 0 to 4000 followers within a month!

Brandan Chen

Associate Game Producer

Vallikat Peethamber

Managing Director

Ottó Farkas

IT Specialist / Project Manager

Hongming Li

Lecturer / Instructor

Angela Pellillo

Backend Developer

Neocortex was the first step in bringing LLM-powered NPCs into a real Unity3D prototype, fast-tracking development and growing my TikTok account from 0 to 4000 followers within a month!

Brandan Chen

Associate Game Producer

Proven at the Supercell Global AI Game Hackathon

Neocortex powered all three top games in a category, plus the winner of a second category.

Read the story

FAQ

Neocortex for Godot: common questions

Is the Neocortex Godot SDK production-ready?

The Godot SDK is in beta. It supports text and voice chat, history and events in Godot 4.

Does Convai or Inworld support Godot?

Convai's docs list no Godot SDK. Inworld's Godot integration was community-maintained and built on its retired Character Studio.

Are there local options for Godot?

Open-source plugins such as NobodyWho run models locally in Godot. Neocortex focuses on complete characters with voice and a visual editor.

Is it free to try?

Yes. Neocortex has a free plan and free testing in the browser editor.

Comparing tools?

How Neocortex compares for Godot teams

Convai alternative

Convai counts every character reply against a monthly quota, with concurrency set per API key. Neocortex gives game teams monthly credits, free editor testing and characters designers control.

Inworld AI alternative

Inworld moved its focus to voice and inference for consumer apps and retired Character Studio. Neocortex keeps character design visual, game-first and in your engine.

Player2 alternative

With Player2, every player signs in to Player2 and spends their own credits, and NPCs stop answering when those run out. Neocortex keeps your players inside your game.

Try AI characters in Godot

Free plan, no credit card. Build a character in the browser and talk to it in minutes.