PHREEQC-MCQ-200: leaderboard
Metric: Accuracy (%; 200 four-option questions from 21 validated PHREEQC aqueous-geochemistry simulation scenarios; the custom agent writes a PHREEQC input, runs the simulator and reads its output within 24 steps, then writes one answer letter; a missing or unparseable answer counts as wrong; table-of-contents output access, Agent-TOC). Source: arxiv.org. Saturation forecast: Around December 2026. 6 models tracked.
Top models
| # | Model | Score |
|---|---|---|
| 1 | Claude Sonnet 4.6 | 84 |
| 2 | Claude Opus 4.6 | 83.5 |
| 3 | GPT-5.4 | 72.5 |
| 4 | GPT-5.2 | 54 |
| 5 | GPT-5.1 | 54 |
| 6 | Gemini 3 Flash (Preview) | 23.5 |
Interactive version: theaggregate.ai/benchmark?slug=phreeqc-mcq-200 · How It Works · Data refreshed daily, snapshot 2026-09-29.