CharXiv Reasoningwith tools

The same chart-and-figure reasoning test, run with the AI allowed to use tools — writing code to inspect the image, for instance — rather than reading the chart unaided. Scores run higher than the unaided version, so read the two as separate tests. Higher is better.

GLM-5.3-Flash by Z.ai holds the best CharXiv Reasoning (with tools) result among tracked models, at 89.4% (released Aug 26 2026). Higher scores are better on this benchmark.

1. GLM-5.3-Flash (Z.ai) — 89.4%.

1 tracked model has a published CharXiv Reasoning (with tools) score. Scores are collected from published lab reports and benchmark sources, with recorded sources credited alongside the results. We do not re-run the evaluations.

GLM-5.3-Flash by Z.ai is the highest-ranked model with downloadable weights on CharXiv Reasoning (with tools), scoring 89.4% at rank 1 overall.