BENCHMARK OBSERVATORY / 10 SEP 2026

Building a Boeing.
Every step, on record.

DeepSeek V4.1 Flash inside Claude Code. Explore the real messages, tools, vision checks and provider accounting from one autonomous 747 build.

Loading run records…

One session. Two phases.

Started at 09:04 UTC. An outer launcher timeout interrupted the process after 30 minutes. The same session resumed at 09:41 UTC and completed at 17:19 UTC. The model and original goal remained unchanged.

Exact benchmark prompt

Activity across the run

Click a 15-minute interval to jump into it. Bar height = recorded events, including provider requests and context updates.

Accounting, without double counting

Tool breakdown and coverage

Full event timeline

What this archive does—and does not—claim

Source hashes and raw record inventory