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Baron Buff analyzes your LoL draft in real time. Get counter picks, synergy detection, and team comp insights during champion select. Free and AI-powered.

Website, pricing, platforms and company facts side by side.
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| Website | opalstack.com | baronbuff.com |
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| Company | — | Startup from Brazil · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Opalstack yet.
Baron Buff is a League of Legends draft and coaching assistant designed to help players make better decisions before, during, and after matches. The tool analyzes champion selections and match context to provide guidance during the drafting phase, helping players evaluate picks based on factors...
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HOW TO USE BARON BUFF CONSISTENTLY
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As answered by people managing Opalstack and Baron Buff.
Baron Buff's answer:
Baron Buff leverages new AI technology that the incumbents didn't have access to when they created their tech stack. The user experience is also another key differentiator, while the other just aggregate data, Baron Buff aggregates insights.
Baron Buff's answer:
More modern technology and better user experience.
Baron Buff's answer:
League of Legends players that want to learn how the pro players play, even if they don't want to become pro players themselves, making LOL an esport instead of just a casual game makes things more interesting.
Baron Buff's answer:
The founder, a former Nubank and Revolut Product leader wanted to go back to his roots and be hands on building something cool with new AI technology.
Baron Buff's answer:
Anthropic Cloud Code and APIs, OpenAI APIs, Google Gemini APIs, Qwen LLM, React, Python, AWS, Nvidia CUDA, RIOT APIs.
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