Perplexity open-sourced WANDR, a 500-task research benchmark with dynamic evidence verification.

Built from production query data, it uses live evidence verification instead of static gold answers, which targets the exact failure of deep-research agents: plausible but unverified synthesis. (Latent Space) If you build or evaluate a research or RAG agent, this is a directly usable measuring stick grounded in real web traffic rather than a toy set.