# WANDR (Wide ANd Deep Research) (WANDR)

> Perplexity's wide-search research benchmark: 500 tasks in which a model must find tens to hundreds of entities, collect facts about each, and return them as cited structured records.

Canonical page: https://benchlm.ai/benchmarks/wandr

- Category: [Agentic](/agentic)
- Last updated: November 11, 2026

## About WANDR

- Year: 2026
- Tasks: 500 wide-search research tasks
- Format: Soft F1 (relaxed score)
- Difficulty: Agentic search
- Paper: [Claude Fable 5.2 and Claude Mythos 5.2 system card](https://assets.claude.com/27d60918d218125e7504bc7354c4b4626ec56b11.pdf)

Anthropic ran a modified version with a frozen offline search index and a Claude Opus 4.6 judge that re-fetches cited URLs; Perplexity's own version uses the live web and a GPT-5.4 judge, so these scores are not comparable with Perplexity's published numbers. The metric is soft F1 (the launch table calls it the relaxed score). BenchLM first added WANDR from the Claude Fable 5.2 launch and keeps it display-only.

WANDR is currently displayed on BenchLM for reference, but it is excluded from the weighted scoring formula.

## Leaderboard (3 models)

| Rank | Model | Creator | Score |
|------|-------|---------|-------|
| 1 | [Claude Fable 5.2](/models/claude-fable-5-2) | Anthropic | 82.1% |
| 2 | [Claude Opus 5.5](/models/claude-opus-5-5) | Anthropic | 72.3% |
| 3 | [Claude Fable 5.1](/models/claude-fable-5-1) | Anthropic | 68.7% |

## FAQ

### What does WANDR measure?

Perplexity's wide-search research benchmark: 500 tasks in which a model must find tens to hundreds of entities, collect facts about each, and return them as cited structured records.

### Which model scores highest on WANDR?

Claude Fable 5.2 by Anthropic currently leads with a score of 82.1% on WANDR.

### How many models are evaluated on WANDR?

3 AI models have published results on WANDR in the BenchLM catalog.

### Does WANDR affect BenchLM's overall score?

Not directly. WANDR is still displayed on BenchLM for reference, but it is excluded from the weighted scoring formula.

## Compare Top Models on WANDR

- [Claude Fable 5.2 vs Claude Opus 5.5](/compare/claude-fable-5-2-vs-claude-opus-5-5)
- [Claude Opus 5.5 vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-opus-5-5)