Skip to content
NewA calmer, faster ZeroHour

AutoTavern agents build a Hearthstone AI that rivals top ladder players

Original title: Build, Don't Play: Self-Improving LLM Research Agents Develop a Hearthstone Battlegrounds AI That Rivals Top Players

Hugging Face daily papersby Changlian Ma, Limin Wang ()1 min read4
AI summary · x-ai/grok-4.7Summaries by Vani AI

In 20 days the system produced TavernGym and 23 TavernAgent versions whose last 20 games averaged 1.60 placement.

AutoTavern is a self-improving research system in which specialised LLM agents share typed memory, pass claims through verification gates, and use live Hearthstone Battlegrounds games to improve a simulator, opponents, policy and their own process. A human sets goals and rules for ambiguous mechanics. TavernAgent, trained with PPO, plays complete live-ladder games alone; its rating rose from 6,000 to about 15,000. On TavernBench it answers 91% of play tasks versus at most 63% for frontier LLMs. The authors say they will open-source TavernBench and TavernGym.

Unconfirmed: Leaderboard and timing comparisons are the authors’ reported results; the promised open-source release is not confirmed here.

Key facts
  • The public leaderboard measure shows 80% first places versus 59% for the server’s top ten.
  • Those ten players average placement 2.34, against TavernAgent’s 1.60 over its last 20 records.
  • TavernBench has 960 tasks in 40 scenarios.
  • TavernAgent decides in 0.03 seconds; frontier LLMs need up to 26 seconds.
  • Within a live turn’s one second it keeps 90% accuracy, and no LLM exceeds 26%.
Explain this AI news with Vani AIWhat was announced, what is new and why it matters, in a new chat

From the original article

1 min read at huggingface.co

Can LLM agents carry a hard real-world problem from raw data to a system that holds its own against people? We study this in Hearthstone Battlegrounds, an eight-player auto-battler with stochastic shops and battles, hidden information and nearly a thousand interacting cards.

Hugging Face daily papers

By Changlian Ma, Limin Wang · huggingface.co

Read the full article at Hugging Face daily papers

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.