Harbor Adapters - Humanity's Last Exam (Terminus-2): leaderboard
Humanity's Last Exam, expert-level questions across mathematics, science, engineering and the humanities, here 249 of its 2,500: accuracy in percent graded by a GPT-5 judge, higher is better; Terminus-2 cannot display images, so questions that rely on one are answered without seeing it. Each model runs in Terminus-2, the Harbor framework's bash-only terminal agent with no native web or image tools, at its provider's default settings, so results can differ from the same model in its vendor's own agent; the score is the mean of three trials (Harbor Adapters large-scale evaluation; Shi, Lin et al., 2026).
Metric: Accuracy (%; 249 questions, GPT-5 judge, mean of 3 trials). Source: arxiv.org. Saturation forecast: Around February 2027. 8 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Gemini 3.1 Pro (Preview) | 53.3 | #91 |
| 2 | Gemini 3 Flash (Preview) | 39.5 | #141 |
| 3 | Claude Opus 4.6 | 34.3 | #100 |
| 4 | Claude Sonnet 4.6 | 21.7 | #158 |
| 5 | GPT-5.4 (Medium) | 20.3 | #121 (GPT-5.4) |
| 6 | GPT-5 Mini | 13.1 | #349 |
| 7 | Claude Haiku 4.5 | 6.4 | #568 |
| 8 | GPT-5 Nano | 5.8 | #888 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=harbor-adapters-humanity-s-last-exam-terminus-2 · How It Works · Data refreshed daily, snapshot 2026-11-12.