Benchmark Almanac

DeepResearchEval v1

Gemini-2.5-Pro DR research agent 8.51 tops its leaderboard
Not in model cards

Research agents prepare reports. The score is average report quality on the original evaluation tasks.

Separate historical task release. Factuality counts and percentages are retained as metrics.

Released
January 2026
Kind
Deep research
Level
Expert
Scored
Graded by a model
Answers
Open-ended
Tasks
All public

In the authors’ words

Deep research systems are widely used for multi-step web research, analysis, and cross-source synthesis, yet their evaluation remains challenging. Existing benchmarks often require annotation-intensive task construction, rely on static evaluation dimensions, or fail to reliably verify facts when citations are missing. To bridge these gaps, we introduce DeepResearchEval, an automated framework for deep research task construction and agentic evaluation. For task construction, we propose a persona-driven pipeline generating realistic, complex research tasks anchored in diverse user profiles, applying a two-stage filter Task Qualification and Search Necessity to retain only tasks requiring multi-source evidence integration and external retrieval. For evaluation, we propose an agentic pipeline with two components: an Adaptive Point-wise Quality Evaluation that dynamically derives task-specific evaluation dimensions, criteria, and weights conditioned on each generated task, and an Active Fact-Checking that autonomously extracts and verifies report statements via web search, even when citations are missing.

Abstract of DeepResearchEval: An Automated Framework for Deep Research Task Construction and Agentic Evaluation (arXiv:2601.09688, CC0)
9
Entries on its own leaderboard, 0 models we track

Gemini-2.5-Pro DR research agent tops the leaderboard with 8.51

Best score per entry from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.

  1. 1 Gemini-2.5-Pro DR research agent v1 8.51
  2. 2 Claude-Sonnet-4.5 DR research agent v1 7.53
  3. 3 OpenAI Deep Research research agent v1 7.28
  4. 4 Qwen-3-235B DR research agent v1 7.17
  5. 5 Doubao DR research agent v1 7.06
  6. 6 Grok4 DR research agent v1 6.92
  7. 7 Perplexity DR research agent v1 6.86
  8. 8 Manus research agent v1 5.95
  9. 9 DeepSeek DR research agent v1 5.25

Source: Official DeepResearchEval v1 leaderboard

#EntryScoreSettingDateSource
1 Gemini-2.5-Pro DR research agent 8.51 v1 Official leaderboard
2 Claude-Sonnet-4.5 DR research agent 7.53 v1 Official leaderboard
3 OpenAI Deep Research research agent 7.28 v1 Official leaderboard
4 Qwen-3-235B DR research agent 7.17 v1 Official leaderboard
5 Doubao DR research agent 7.06 v1 Official leaderboard
6 Grok4 DR research agent 6.92 v1 Official leaderboard
7 Perplexity DR research agent 6.86 v1 Official leaderboard
8 Manus research agent 5.95 v1 Official leaderboard
9 DeepSeek DR research agent 5.25 v1 Official leaderboard

No lab model card reports it yet

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.

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