Kythera AI

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Navigation and NPC behavior middleware for Unreal Engine, Unity, and custom engines. Fast pathfinding for large, complex maps and intelligent AI at scale.

Our take

Last updated 27 October 2026

Kythera AI is navigation and NPC behavior middleware for Unreal Engine 5, Unity and custom engines. It focuses on fast pathfinding across large, complex maps, including surface navigation, plus AI planning for NPC behavior. Licensing is per title and includes multi-platform support, a year of support and source code. Prices are on request, and the company mentions a discount for small studios.

Best for Studios shipping open-world or large-scale games that need advanced pathfinding and NPC behavior.

Pros

  • Built for large, complex maps where stock navmesh struggles.
  • Works with Unreal, Unity and custom engines.
  • Source code included with the license.

Cons

  • No public price; you must contact sales.
  • Per-title licensing adds up across several games.
  • Overkill for small maps where engine navigation is enough.

Written from the vendor's official site and docs, not a hands-on benchmark. How we review tools.

CategoryNPCs & Characters
PricingPer-title Standard License for Unreal Engine 5, Unity or custom engines (multi-platform, 1 year of support, source code); price on request, with a small-studio discount available — official pricing
Websitehttps://www.kythera.ai/
Last checked2026-10-27

Description taken from the tool's official website meta description; licensing terms from the official licensing page.

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