iPrefBench Interaction Recall
Agents · 2026-10-26
iPrefBench's interaction recall: the share of all ask-only requirements (details held only by the simulated user, in 76 of the 130 tasks) that the agent elicits through ask_user, pooled across tasks, in percent. A Claude Sonnet 5 judge splits the agent's messages into individual requests and matches each to a requirement. It measures whether the agent asks enough, not task outcome, so it is a diagnostic; the total number of ask-only requirements is not printed.
Top models (higher is better)
| Model | Score |
|---|---|
| Claude Opus 5 | 44.2 |
| Sonnet 5 | 25.7 |
| Qwen3.8-Flash-Next | 25.7 |
| Gemini 3.1 Pro Preview | 23.9 |
| Qwen3.8 27B | 21.2 |
| Kimi K3 | 15.9 |
| Gemini 3.7 Flash | 10.6 |