Benchmarks / Agentic

EBR-bench (Earthborne Rangers, Epoch AI)

Epoch AI's agentic game benchmark built on the Earthborne Rangers card game: long-horizon planning across a campaign. Score is the share of the scenario completed. Data: Epoch AI, CC BY.

26models
–Open Index weight
–last updated
epoch-taskspublisher

EBR-bench (Earthborne Rangers, Epoch AI)

Higher is better · best effort per model

Chart settings
26 of 26 selected

full table below

#ModelEffortScoreCost / taskHarness
1GPT-6 Astramax76.2%–Epoch AI
2Opus 5.5max71.4%–Epoch AI
3Gemini 4high64.8%–Epoch AI
4Fable 5.1max57.1%–Epoch AI
5GPT-6.1 Solmax54.3%–Epoch AI
6GPT-6 Solmax53.3%–Epoch AI
7Opus 5max45.7%–Epoch AI
8GPT-5.6 Solmax44.8%–Epoch AI
9Haiku 5.5max43.8%–Epoch AI
10Fable 5max39.5%–Epoch AI
11GPT-5.5xhigh34.3%–Epoch AI
12Grok 4.6xhigh30.5%–Epoch AI
13Opus 4.8max28.6%–Epoch AI
14GPT-5.4xhigh25.4%–Epoch AI
15GPT-5.2xhigh23.0%–Epoch AI
16Opus 4.7max19.0%–Epoch AI
17Opus 4.5high14.3%–Epoch AI
18Gemini 3.1 Prohigh14.3%–Epoch AI
19Opus 4.6max12.7%–Epoch AI
20GPT-5high12.7%–Epoch AI
21GLM 5.2max9.5%–Epoch AI
22Qwen 3.7 Maxmax9.5%–Epoch AI
23Opus 4.1high7.9%–Epoch AI
24Gemini 3.5 Flashhigh4.8%–Epoch AI
25Kimi K2.6max2.4%–Epoch AI
26Sonnet 4.5high2.4%–Epoch AI