Four demos written by GPT-6.1 Sol
Every page here was written in one prompt, one shot by GPT-6.1 Sol, the model OpenAI released at DevDay on September 29, 2026, on medium reasoning effort. No hand edits. Open them and try them yourself.
Ashen Vigil
An original dark-fantasy boss fight: light combos, heavy attacks, dodge rolls, parry and riposte, lock-on, a spell, a reliquary chest and a two-phase boss, the Cinder Warden.
FORM / 87
A mechanical keyboard assembled piece by piece in 3D: case, circuit board, stabilisers, plate, 87 switches and every keycap. Clickable timeline, exploded view, RGB effects, and your real keys press the 3D ones.
Orbit One
The 360° smartwatch viewer, from the exact prompt Sonnet 5.5 got: live watch face, five hotspots, five finishes, three faces and an exploded view.
New York Harbour
The 2,000-line test, same prompt as Sonnet 5.5: Manhattan over the harbour with ferries, cabs, a helicopter and walking people, dawn to night, rain and snow. 3,620 lines, one request.
Same prompt: GPT-6.1 Sol vs Claude Sonnet 5.5
The day before, Claude Sonnet 5.5 got these two prompts for our previous video. GPT-6.1 Sol got exactly the same words. Both versions are here, untouched, so you can be the judge.
