Overview

Cortex is a native Unreal Engine 5 editor plugin that connects your UE5 editor to large language models via API and translates natural language instructions into real editor operations. Unlike external tools, Cortex runs entirely inside UE5 as a native Slate panel.

What Cortex Can Do

• Create and modify Blueprint actors, components, variables, functions, and node graphs
• Build UMG widget hierarchies with properties and slot configuration
• Generate PCG biome graphs for landscape scatter
• Create User Defined Structs, Enums, and DataTables
• Set up Enhanced Input Actions and Input Mapping Contexts
• Create and modify Materials with node graphs
• Spawn, destroy, and configure actors in the current level
• Query, duplicate, rename, and delete project assets
• Analyze and explain existing Blueprints in Analyst mode
• Refactor and optimize Blueprint graphs in Optimizer mode

Supported AI Providers

• Anthropic Claude — Strongly recommended. claude-opus-4-6 and claude-sonnet-4-6 deliver the best results.
• OpenAI GPT — GPT-4o and later supported.
• Custom Endpoint — Any OpenAI-compatible API (LM Studio, Ollama, etc.).