AgentIndex icon
AgentIndex
Cortico logo
Cortico
★ 248
vs
build-world logo
build-world
★ 104

Cortico vs build-world

Cortico: Cortico is an agent harness built around an event stream, designed for autonomous, continuously running AI agents capable of handling complex, mixed real-time inputs. It features a modular architecture for LLM providers and an extensible 'World' system, allowing agents to observe and act across diverse external environments like chat platforms, games, and physical setups.; build-world: Build World allows users to create interactive 3D worlds, games, and simulations by leveraging AI agents like Claude Code to handle logic and scene setup, complemented by Thrixel for high-quality 3D asset generation and management. It features an iterative "gauntlet loop" workflow that enables continuous refinement from a single prompt, supporting various popular game engines.

01

TL;DR

Cortico logo
CorticoMulti-Agent · ★ 248

Developing persona bots and AI streamers

Read Cortico full review →
build-world logo
build-worldMulti-Agent · ★ 104

Prototyping and developing games from a single prompt

Read build-world full review →
02

Side-by-Side Comparison

Field
Cortico logoCortico
build-world logobuild-world
Category
Multi-Agent
Multi-Agent
Stars
★ 248
★ 104
License
MIT
Apache-2.0
Install Command
corepack pnpm install && pnpm start
uvx thrixel-mcp@latest login && claude plugin marketplace add thrixel/build-world && claude plugin install thrixel@thrixel
Updated
1d ago
4d ago
Open Source
Yes
Yes
Website
↗ Visit
↗ Visit
GitHub
↗ GitHub
↗ GitHub
Tags
AI Agent, Event Stream, LLM Integration
AI Agent, 3D Content Generation, Game Development
03

Features

Cortico logoCortico
01Native agent harness designed around the agent lifecycle
02Modular LLM provider components supporting various APIs and local models
03Extensible 'Cortico World' system for environment interaction and tool calls
04Intuitive and easy-to-operate WebUI
05AI-powered 'Cortina' extension creator for non-developers
build-world logobuild-world
01AI agent-driven 3D world creation (Claude Code or similar)
02High-quality 3D asset generation and management via Thrixel
03Iterative "gauntlet loop" workflow for continuous refinement
04Multi-engine support (Three.js, Roblox, Unity, Unreal Engine)
05Automated publishing and sharing of 3D worlds
04

Use Cases

Cortico logoCortico
↳Developing persona bots and AI streamers
↳Building AI VTubers
↳Creating persistent AI agents handling complex inputs
↳Cross-environment interaction (chat platforms, live games, physical environments)
build-world logobuild-world
↳Prototyping and developing games from a single prompt
↳Creating interactive experiences and simulations
↳Building educational experiences and virtual tourism
↳Developing AR/VR experiences
↳Reusing 3D assets across different projects and engines
FAQ

FAQ

What is the difference between Cortico and build-world?
Both Cortico and build-world are in the Multi-Agent category. Cortico has 248 stars, while build-world has 104 stars.
Which is better, Cortico or build-world?
The best choice depends on your use case. Choose Cortico if Developing persona bots and AI streamers, and build-world if Prototyping and developing games from a single prompt.
Is Cortico free or open source?
Yes, Cortico is open source on GitHub (MIT).
Is build-world free or open source?
Yes, build-world is open source on GitHub (Apache-2.0).
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Related

Alternatives to Cortico →Alternatives to build-world →Cortico details →build-world details →