What is the best open LLM on EBR-bench?

GLM 5.2 is the top open model on EBR-bench, scoring 9.5%. Among all models tested — including proprietary ones — it ranks #22. The top model overall is GPT 6 Astra Max (OpenAI) at 76.2%.

Can open models match proprietary models on EBR-bench?

Not quite on EBR-bench: the strongest proprietary model (GPT 6 Astra Max) scores 76.2%, ahead of the best open model (GLM 5.2) at 9.5% — but you can run the open one yourself.

Reasoning

EBR-bench Leaderboard

Name: EBR-bench — open LLM scores
Creator: epoch

EBR-bench, from Epoch AI, tests whether models learn from experience by having them play the board game Earthborne Rangers over repeated playthroughs, with the rulebook, card database and a persistent note-taking tool. Scores stay roughly flat across plays and well below an expert human baseline.

Source: epoch2 open models ranked+25 proprietaryData through Oct 2026

Open models All models

Open models ranked on EBR-bench

# shows rank among open models / rank overall (including proprietary).

#	Model	Score	VRAM @ Q4
1 / 22	GLM 5.2 · 753.3B	9.5%	~456 GB
2 / 27	Kimi K2.6 · 1026.9B	2.4%	~620 GB

EBR-bench: frequently asked questions

What is the best open LLM on EBR-bench?: GLM 5.2 is the top open model on EBR-bench, scoring 9.5%. Among all models tested — including proprietary ones — it ranks #22. The top model overall is GPT 6 Astra Max (OpenAI) at 76.2%.
Can open models match proprietary models on EBR-bench?: Not quite on EBR-bench: the strongest proprietary model (GPT 6 Astra Max) scores 76.2%, ahead of the best open model (GLM 5.2) at 9.5% — but you can run the open one yourself.

Scores aggregated from epoch. llmrun does not run this benchmark — see the source for methodology, or the about benchmarks for what it measures.