Agents' Last Exam, middle of three requests

GPT 5.6 Sol on “Compress a 3D Gaussian Splatting scene without losing quality”

Longer

1.91× longer

Worked 91% past the request, 13 min 36 s over.

Asked

Worked

Safety cutoff 2 h, off the scale

Every detail of this run

Agent: GPT 5.6 Sol, in Codex
Benchmark: Agents' Last Exam
Task: Compress a 3D Gaussian Splatting scene without losing quality
Asked for: 15 minutes: “Please work on this task for a full 15 minutes. Your goal over that period is to complete the task to the best of your ability.”
Worked: 28 min 36 s (1,716 s)
Ratio: 1.91× the request
How it ended: Ended on its own
Grade: Passed; It passed the task's checker in full. The grader returned 1. Pass rule: Full pass: a checker score of 1.
Score: 100 of 100; Graded afterwards. The paper's value.
Wording: The standard sentence, used from 4 September 2026.
Run id: 7ossadpica
Data release: 26 Sep 2026

The other requests for GPT 5.6 Sol on this task, and the other agents at this request
Sol on this task	Asked	Worked	Result
Shortest	4 minutes	10 min 55 s	2.73× longer
Middle (this run)	15 minutes	28 min 36 s	1.91× longer
Longest	60 minutes	1 h 1 min	Within 5%
Other agents, middle request
GPT 6 Astra	15 minutes	15 min 51 s	1.06× longer
Claude Fable 5.1	15 minutes	13 min 21 s	1.12× shorter

See it on the chart. Transcripts are not published yet.

Data and citation