TIDE (Evolving Documents, Gold Context) - Perturbation Detection: leaderboard

Metric: Strict accuracy (%; true-or-altered verdicts on 498 statements, perturbed and unperturbed together; TIDE, 3,050 expert-verified questions over 644 Bangladesh customs instruments (1969-2025); free-form answers are judged by a council of Claude Opus 4.6, Gemini 3.5 Flash and GPT-5.1 by majority vote with a hard date gate, deterministic tasks by exact match; strict accuracy without the partial-rubric credit; thinking enabled, temperature 0; gold context: the governing instrument text is supplied in the prompt). Source: arxiv.org. Saturation forecast: Around December 2026. 9 models tracked.

Top models

#ModelScore
1Gemini 3.5 Flash81.33
2GPT-5.2 (Thinking)80.32
3Claude Sonnet 4.5 (Thinking)80
4Gemma 4 31B (Reasoning)79.52
5Qwen 3.6 35B A3B77.31
6Kimi K2.5 (Thinking)77.11
7GPT-OSS-120B74.5
8GLM-4.673.9

Interactive version: theaggregate.ai/benchmark?slug=tide-evolving-documents-gold-context-perturbation-detection · How It Works · Data refreshed daily, snapshot 2026-09-29.