Model gemini-3.6-flashMeasured 9/26/2026v12 of 22 cases passed with skill · 6 comparable
Tokens, turns and time describe resource use, not a dollar price.
Lift withheld: 6 comparable cases; this report requires 8.
See it in action
A test case the skill fixed. Same model, same prompt, with and without the skill.
Prompt
Write the content markup for a dog walking service flyer. I have included what the service is ("Dog Walking") and the cost ("$20/hr"). What other core scannable elements must be grouped together for a complete printable flyer?
What was checked, without and with the skill
Checked
Without skill
With skill
The content group includes event timing and location details.
Missed
Passed
The content group includes a clear call to action.
Passed
Passed
case-18 · gemini-3.6-flash · 9/26/2026 · answers are capped and redacted
What's inside
The instructions your model reads when the skill loads.
SKILL.md41 linessingle file
Flier
Design a print-ready, single-page flier as one self-contained HTML
file: exactly one fixed-size page.
Sheet setup:
START by calling copy_starter_component with kind: "doc_page.js",
then build the flier as ONE explicitly paginated page:
….
The component owns the page box, the desk background that
disappears at print, the page break discipline, and all print
geometry — do NOT write your own @page rule, body background, or
hard-coded paper dimensions, and never add an omelette-owns-print
meta. The print dialog must show exactly 1 page.
The flier prints as a FIXED full-bleed page box with overflow
hidden — letter by default, the user's chosen paper (letter, A4, …)
when they export — so content that misses the box is clipped, never
reflowed. Design the flier to FILL the page box and fit letter and
A4 alike without overlap.
The page is full-bleed: the flier owns its own inset — keep a
visual margin of at least 4% of the page on every edge, and keep
everything inside it.
Never viewport units (vh/vw) — they track the window, not the page.
A flier is read at a distance, in passing, in under three seconds:
One dominant element — usually a headline under ~6 words — sized so
it reads across a room (think 8cqh+), everything else clearly
subordinate.
The five Ws grouped tight and scannable: what, when, where, cost,
and one way to act (QR-sized URL, phone number, or tear-off) — not
scattered through prose.
Strong flat color blocks and vector shapes over photos and
gradients; high contrast; body text in near-black on light stock.
Generous whitespace beats more words — cut copy until the hierarchy
is unmissable.
Optional: a tear-off fringe along the bottom edge (a row of
narrow cells with dashed left borders and rotated contact text) when
the user wants phone-number slips.
Check the print preview: nothing clipped, nothing spilling to page