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Is learning behavior trees worth it in 2025?

Is the Shift to State Trees for AI Development a Game Changer? | Developers Weigh In on Behavior Trees

By

Nina Patel

Nov 27, 2025, 04:33 PM

Updated

Nov 28, 2025, 12:15 PM

2 minutes needed to read

Illustration showing a comparison between Behavior Trees and State Trees in AI development, featuring simplified graphics of each structure
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A growing coalition of developers is raising eyebrows over the ongoing trend toward State Trees for AI design in gaming. Recent discussions in forums highlight contrasting opinions on Behavior Trees (BTs), with various developers questioning their teaching relevance and practical application in current projects.

The Current Discussion

While Unreal Engine aggressively promotes State Treesโ€”visible in their tutorials and examplesโ€”many AI-focused resources still lean heavily on Behavior Trees. This duality has left developers pondering whether mastering BTs is now a waste of time.

Key Points from the Community

  1. Blending Techniques

    Some developers are finding success using both Behavior Trees and State Trees together. One commented, "StateTree dictates the state the AI is in and each state has a BT as implementation." This approach allows for versatile setups, optimizing performance while leveraging both systems' strengths.

  2. Frustration with BT Complexity

    Complaints around BTs are common. A developer shared, "For me, BTs are not at all intuitive they get unwieldy with large codebases." The general sentiment suggests that BTs are viewed increasingly as cumbersome components that complicate coding efforts.

  3. State Trees Gaining Enthusiasm

    Many developers are praising State Trees for their efficiency. Comments like, "State Trees are more optimal because they change states based on events," emphasize their performance benefits compared to the reactive nature of BTs.

The Learning Curve

Feedback suggests that despite the rise of State Trees, having knowledge of both systems could be beneficial. Developers stress the importance of remaining adaptable in a rapidly changing environment. One user stated, "Itโ€™s always worth it to learn stuff; trying to optimize learning processes isnโ€™t as useful as people think."

In Summary

The debate surrounding Behavior Trees and State Trees reflects a larger tension within the programming community. As developers increasingly switch towards State Trees due to their performance advantages, Behavior Trees may face further decline unless they adapt or offer clearer benefits.

"I made the switch to state trees for my racing AI and have zero regrets," echoed a recurring sentiment among developers embracing the change.

Takeaways

  • ๐ŸŒŸ Blending both Behavior Trees and State Trees can yield better results.

  • โš ๏ธ Developers criticize the complexity and performance issues of Behavior Trees.

  • ๐Ÿš€ State Trees are seen as the more efficient solution moving forward.

  • ๐Ÿค” Knowledge of both systems remains valuable amid shifting trends.

As developers assess their tools and technologies in 2025, the future of AI design in gaming may hinge on the communityโ€™s ability to embrace change. Will developers fully commit to State Trees, or do older methods still hold sway?