Alexandria - Human Dialectness Rating (Egyptian Arabic): leaderboard

Human evaluation of English to Egyptian Arabic translation on the Alexandria (El Mekki et al., ACL 2026) test set: native speakers rate on a 1-5 scale whether each translation sounds like a native speaker of the target dialect rather than Modern Standard Arabic or a mix, independently of meaning. Mean rating, higher is better.

Metric: Dialectness and fluency (1-5; native Egyptian speakers rate whether the English-to-dialect translation sounds like a native speaker of the target dialect). Source: arxiv.org. Saturation forecast: Around December 2027. 6 models tracked.

Top models

#ModelScoreOverall rank
1Gemini 3 Flash (Preview) (Minimal)3.62#141 (Gemini 3 Flash (Preview))
2Gemini 3 Flash (Preview) (Medium)3.56#141 (Gemini 3 Flash (Preview))
3Gemma 3 27B (IT)3.35#1306
4c4ai-command-a-03-20253.31#1096
5GPT-OSS-120B3.22#699
6aya-expanse-32B3.02#1950

No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.

Interactive version: theaggregate.ai/benchmark?slug=alexandria-human-dialectness-rating-egyptian-arabic · How It Works · Data refreshed daily, snapshot 2026-11-12.