APEX-Agents · Law

World431_jcf_01

0/2Fail

APEX-Agents task World431_jcf_01 in AI Agents for Real Estate Lease Review. Compare dual-harness agent runs across models — rubric criteria, scores, and public traces.

AI Agents for Real Estate Lease ReviewLaw World 431Dual harnessGrader: rubric

Task IDtask_55636a0feecb473bbc8d6a447261aec4

WorldLaw World 431

Expected outputmessage_in_console

Published runs7 models · dual config

Task prompt

What the agent was asked to do

Refer solely to "Lease v3 2020 Main AI Auto CBA 12042025.docx", the version of the lease that was executed. We need a determination on the Commencement Date for the lease. Reply to me right here with your assessment. This is what the client shared with us: - lease was executed on December 15, 2025 - space plan was delivered by Lessee on December 30, 2025 - Lessor approved space plan on January 5, 2026 - Lessor delivered Construction Drawings on January 15, 2026 - Lessee approved Construction Drawings on January 22, 2026 - Lessor began construction on February 2, 2026 - Lessee installed exterior signage per schedule deadline on April 1, 2026 - Lessee was notified exterior signage did not comply with plans or city rules on April 15, 2026 - Lessee installed compliant exterior signage on May 11, 2026 - Inspection completed by City of Irvine on May 18, 2026 - a certificate of occupancy was issued by the City of Irvine’s Building Division on June 1, 2026.

Published trajectories

Agent runs on this task

Curated dual-harness runs (parsed + original sandbox). Best scored run per model.

Model	Harness	Score	Result	Links
GPT-5.5showcase	dual	0/2	Fail	Share page Public trace
fireworks models Kimi K2	dual	0/2	Fail	Share page Public trace
Gemini 3 Flash	dual	0/2	Fail	Share page Public trace
Gemini 3.1 Pro	dual	0/2	Fail	Share page Public trace
GPT-5.4	dual	0/2	Fail	Share page Public trace
GPT-5.4 mini	dual	0/2	Fail	Share page Public trace
GPT-5.4 nano	dual	0/2	Fail	Share page Public trace

Grading rubric

Criteria and grader verdict (showcase run)

States there is insufficient information to determine the Commencement Date
Fail
Evidence: The response states, “My assessment is that the Commencement Date is June 1, 2026” and later “So the clean determination is: Commencement Date: June 1, 2026.” Assessment: The criterion requires that the response state there is insufficient information to determine the Commencement Date. It does the opposite by giving a clean determination, with only limited qualifications about tender and potential Lessee-delay evidence. Fail.
States the scheduled construction completion date is required to make a determination
Fail
Evidence: The response discusses needing “support for the but-for date” and evidence that the signage issue was “on the critical path,” but it does not mention a scheduled construction completion date. Assessment: The criterion requires stating that the scheduled construction completion date is required to make a determination. That required point is absent. Fail.