PiSAR - OPeRA: leaderboard
Metric: Semantic similarity (mean cosine similarity between OpenAI text-embedding-3-small embeddings of the predicted and the gold rationale; 119 held-out OPeRA online-shopping traces). Source: arxiv.org. Saturation forecast: Around April 2028. 5 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | GPT-5.5 | 0.41 |
| 2 | Claude Opus 4.7 | 0.34 |
Interactive version: theaggregate.ai/benchmark?slug=pisar-opera · How It Works · Data refreshed daily, snapshot 2026-09-26.