EuroEval Czech NLU - CS GEC: leaderboard

Metric: Linguistic acceptability Score (%). Source: euroeval.com. 229 models tracked.

Top models

#ModelScore
1Gemini 2.5 Pro64.37
2Gemini 2.5 Flash (Thinking)63.31
3Claude Sonnet 4.660.22
4Gemini 3.1 Flash Lite (Preview)59.64
5GPT-4.159.12
6GPT-5.4 Mini (High)58.1
7GPT-5.4 Mini (Medium)56.87
8Gemma 4 26B A4B (IT)55.73
9Gemini 3 Pro (Preview)55.12
10GPT-4.1 Mini53.79
11Gemma 4 31B (IT)51.41
12GPT-4.1 Nano48.45
13GPT-5 Mini48.04
14Claude Sonnet 4.5 (Thinking)46.15
15Ministral-3-14B-Reasoning-251245

Interactive version: theaggregate.ai/benchmark?slug=euroeval-czech-nlu-cs-gec · How It Works · Data refreshed daily, snapshot 2026-09-05.