AfriScience-MT (Zero-Shot) - English to Luganda: leaderboard

Zero-shot sentence-level translation of scientific summaries from English into Luganda on the AfriScience-MT test split (Abdulmumin et al., 2026), whose translators coined missing scientific terms. SSA-COMET, the African-language-tuned COMET, on a 0-100 scale; higher is better.

Metric: SSA-COMET (0-100; sentence-level eng->lug on the test split; zero-shot). Source: arxiv.org. Saturation forecast: Around February 2027. 15 models tracked.

Top models

#ModelScoreOverall rank
1GPT-5.464.3#121
2GPT-4o60.7#741
3Gemini 1.5 Flash59.4#1671
4Gemini 3.1 Flash Lite58.7#363
5Gemma 2 9B (IT)40.3#2275
6Tiny Aya Global36.7#6489
7Llama 3.1 8B Instruct35.9#4277

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

Interactive version: theaggregate.ai/benchmark?slug=afriscience-mt-zero-shot-english-to-luganda · How It Works · Data refreshed daily, snapshot 2026-11-12.