Battle replay

Grok 4 vs o3

tree_0011 · Welcome

Grok 4 · Better

WIDE

Rounds

2 - 0

Final Score

818,029

Tokens

$8.18

Cost

Round 4

Mode

← Back to battles·View source page·round4/R4_M2_grok-4-search_vs_o3-search_tree_0011.log

Timeline

Arrow keys or j/k move between rounds.

Round 1 of 2

Round Context

Depth 2Width 2Pressure test

Logic Chain

Root

Welcome

Step 2

Evaluation and correction of fertility data

Question

Identify the comprehensive digital resource produced by the joint IUSSP and UNFPA project that serves as the direct successor to UN Manual X for demographic estimation using limited and defective data. Within this resource, locate the specific section titled 'Evaluation and correction of fertility data.' Who is the author of this section, and what is the full suggested citation provided for it, including the list of editors for the complete volume?

Answer length: 50-150 words.

Show hidden checklists

Depth checklist

Target Resource: Tools for Demographic Estimation
Logic Proof: Identified via the IUSSP/UNFPA joint project and UN Manual X lineage.

Width checklist

Author of the section: Moultrie TA
Year of publication in citation: 2011
Title of the section: Evaluation and correction of fertility data
Editors listed in citation: Moultrie TA, Dorrington RE, Hill AG, Hill K, Timæus IM, and Zaba B
Publisher/Location: Paris: International Union for the Scientific Study of Population (IUSSP)

Examiner rationale

The question requires Deep reasoning to identify the specific project ('Tools for Demographic Estimation') using its organizational origins (IUSSP/UNFPA) and historical context (UN Manual X) without naming it. It then applies Wide scoping by forcing the agent to navigate within that resource to a specific sub-section ('Evaluation and correction of fertility data') to extract precise bibliographic details.

Judgment

Better

NONE

Score 1 - 0

Both agents correctly identified the resource, the author, and the list of editors. Both used 2013 for the citation year (which is the standard citation for the print/fixed version of the resource, even if the online project started in 2011). Agent A is better because it provided functional, clickable URLs to the specific section in its reference list, whereas Agent B provided a text-only reference with a potentially hallucinated access date. Agent A's utility is higher.

Evolution step

Determining Next Step...

WINNER is A. Targeting Loser Failure: NONE.

Action: Pressure Test (Deep+1 & Wide+1)

Descended to: 'Maternal mortality'

Grok 4

xAI

34.3s

The comprehensive digital resource is "Tools for Demographic Estimation," developed by the joint International Union for the Scientific Study of Population (IUSSP) and United Nations Population Fund (UNFPA) project, serving as the direct successor to the United Nations' Manual X on indirect techniques for demographic estimation from limited and defective data [1]. This online manual provides tools for analyzing such data in low-resource settings. Within it, the specific section titled "Evaluation and correction of fertility data" is authored by Thomas A. Moultrie [2]. The full suggested citation for this section is: Moultrie, T.A. (2013). Evaluation and correction of fertility data. In Moultrie, T.A., Dorrington, R.E., Hill, A.G., Hill, K., Timæus, I.M. and Zaba, B. (eds). Tools for Demographic Estimation. Paris: International Union for the Scientific Study of Population [2]. ## References [1] https://demographicestimation.iussp.org/ [2] https://demographicestimation.iussp.org/content/evaluation-and-correction-fertility-data

o3

OpenAI

36.3s

Tools for Demographic Estimation is the joint IUSSP–UNFPA online successor to UN Manual X. Within it, the section “Evaluation and correction of fertility data” is authored by Thomas A. Moultrie. Suggested citation: Moultrie, T.A. (2013). Evaluation and correction of fertility data. In T.A. Moultrie, R.E. Dorrington, A.G. Hill, K. Hill, I.M. Timæus & B. Zaba (eds.), Tools for Demographic Estimation. Paris: International Union for the Scientific Study of Population. [1] ## References 1. Tools for Demographic Estimation, IUSSP & UNFPA, “Evaluation and correction of fertility data”, accessed 15 Dec 2025.