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
6Gemini 3 Flash (Preview) (Non-reasoning)59.08
7GPT-5.4 Mini (High)58.1
8Gemini 2.5 Flash Lite (Thinking)57.87
9GPT-5.4 Mini (Medium)56.87
10GPT-5.4 Mini (Non-reasoning)56.02
11Gemma 4 26B A4B (IT)55.73
12Gemini 3 Pro (Preview)55.12
13GPT-4.1 Mini53.79
14Gemini 2.5 Flash Lite (Non-reasoning)51.99
15Gemma 4 31B (IT)51.41

Interactive version: theaggregate.ai/benchmark?slug=euroeval-czech-nlu-cs-gec · How the rankings work · Data refreshed daily, snapshot 2026-07-22.