LoSoNA: leaderboard
LoSoNA (2026) tests local social norm adaptation: in 38 curated group chats other participants demonstrate an unstated local norm, and a final turn forces a reply that shows whether the model inferred it, judged by an LLM. This board is accuracy at 3 (%), the share of scenarios where most of three sampled replies comply, under naive prompting with no instruction to infer norms; higher is better.
Metric: Accuracy@3 (%) under the naive (write the next chat message, no instruction to infer norms) prompt condition on 38 curated group-chat scenarios in which other participants demonstrate a hidden local norm and a final elicitor turn forces a revealing reply; three sampled replies per scenario judged for compliance by a fixed Gemini 3.1 Pro Preview judge; accuracy@3 (%) is the share of scenarios where the majority of the three replies comply; higher is better. Source: arxiv.org. Saturation forecast: Around 2029. 8 models tracked.
Top models
| # | Model | Score | Overall rank |
|---|---|---|---|
| 1 | Claude Fable 5 | 47.4 | #27 |
| 2 | Gemini 3.1 Pro (Preview) | 36.8 | #94 |
| 3 | Claude Opus 4.8 | 36.8 | #56 |
| 4 | Mistral Medium 3.1 | 36.8 | #852 |
| 5 | GPT-5.5 | 34.2 | #49 |
| 6 | Llama 3.3 70B Instruct | 28.9 | #1357 |
| 7 | Qwen 2.5 72B Instruct | 23.7 | #1092 |
| 8 | Gemma 3 27B (IT) | 21.1 | #1289 |
No result here: #1 Claude Fable 5.2, #2 Gemini 4 Carbon, #5 Claude Opus 5.5.
Interactive version: theaggregate.ai/benchmark?slug=losona · How It Works · Data refreshed daily, snapshot 2026-11-13.