katago ☆

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Description:
Neural Network Go engine with no human-provided knowledge

Type: Formula | Latest Version: s9996604416-d4316597426@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Ai ml

Tags: ai go board-game engine reinforcement-learning

Install: brew install katago

About:
KataGo is a powerful open-source Go engine that utilizes deep neural networks to evaluate board positions and play at a professional level. Unlike traditional engines, it does not rely on human-crafted rules or joseki databases, instead learning purely from self-play reinforcement learning. This allows it to discover novel strategies and provide highly accurate win-rate analysis for players of all levels.

Key Features:

Neural network-based analysis with no human-provided knowledge
Support for analysis including win rates, score differences, and territory estimates
Strong playing strength, capable of beating professional players
Configurable strength for training and casual play
Open source and actively developed

Use Cases:

Analyzing Go games to understand mistakes and improve strategy
Playing against a strong AI opponent for practice
Generating opening books or joseki variations
Integrating AI analysis into Go server backends

Alternatives:

Leela Zero – Leela Zero was one of the first open-source projects to achieve strong play via self-play, but KataGo generally offers stronger performance and more detailed analysis features.
Komi – Komi is a commercial Go AI, while KataGo provides a free, open-source alternative with comparable strength.

Version History

Detected	Version	Change	Commit
Sep 15, 2025 4:44pm	s9996604416-d4316597426	VERSION_BUMP	5e67a931
Sep 12, 2025 1:30pm	s9996604416-d4316597426	VERSION_BUMP	7340a904
Sep 11, 2024 2:14am		VERSION_BUMP	4ffbe456
Sep 1, 2024 12:34am		VERSION_BUMP	dfa21297
May 25, 2023 10:14pm		VERSION_BUMP	63cfd3a3
May 25, 2023 12:22pm		VERSION_BUMP	b7f068d9