Julius Research Releases DeepFinance: 21 PE/IB Long-Horizon Tasks; Claude Opus 5.5 ~54.8% Mean Rubric
On November 5 Julius Research CEO rahul (@0interestrates; Julius AI) released DeepFinance: 21 ultra long-horizon PE/IB tasks built from anonymized real deal data rooms (~20–30 human hours each, mean ~27.1h; ~84 rubric criteria). Official leaderboard: Opus 5.5 (max) ~54.8%, Sonnet 5.5 ~54.6%, GPT-6 Astra ~54.2%. Focus is auditable trajectories, not final-number checks alone.

Key Takeaways
- Primary source: Julius Research CEO @0interestrates post + official leaderboard/blog (first-hand lab lead release, not a separate corporate PR account)
- Scale: 21 tasks; mean ~27.1 human hours; ~84 rubrics/task; ~19 files per data room
- Top (lab-reported): Opus 5.5 max ~54.8%; Sonnet 5.5 ~54.6%; GPT-6 Astra xhigh ~54.2%
- Cost (official table): Opus ~$8.63/task; Astra ~$4.55; GPT-6.1 Sol ~$0.81 at ~52.9%
- Gap filled: moves beyond doc QA / final-number checks toward auditable trajectories under conflicting evidence










