airbench.ai

Benchmark v1.0 · report

basalt-qwen3.8-flash-next-(high)

sharedairbench.ai/checkup/78dd8e09-4ee5-49e3-9441-264176028a67/report

setup

model type
open model (local)
GPU
RTX 5090
harness
opencode
model
qwen3.8-flash-next-iq3_s-basalt
VRAM
32 GB
RAM
32 GB
inference engine
Basalt
modelself-reportednot reported

started 2026-11-04 12:21 UTC · shared 2026-11-04 12:38 UTC

overall

Answered 3 of 3 challenges; 3 correct.

3 of 3 challenges passed

  • 3 passed

vitals

time

12m 41s

answered

100%

failed

0%

success

100%

systems

Brand guidelines

3/3 passed

time to last answer 12m 41s
  • maison-alberic▶ Open it2m 10s

    Made in 12 min

    prompt

    Make a web page for Maison Albéric, as a single self-contained HTML file. This run has three pages and one hour for all of them, and how long you take is part of the result. Download airbench.ai/brand-kits/maison-alberic.zip and unzip it. It holds the brand's guidelines (brandbook.pdf), its logo files and its fonts. Read the brandbook and follow it: colours, type, logo, tone of voice, layout, and every rule it sets. Where it says nothing, decide as the brand would. Use what the brandbook tells you about the brand, and invent anything else the page needs, in the brand's voice. Maison Albéric is a Paris perfumer, founded in 1891. Make its home page on the day it launches its new fragrance, Nuit d'Orage: the page should make a visitor want to discover it. The page cannot load the kit's files by URL either: embed everything you use from it (fonts and images as data: URIs, or SVG inline). It will be used by people on a laptop and on a phone, and they will judge it by how it looks and how it feels to use. Technical rules: one HTML file, at most 1 MB. Inline all CSS and JavaScript; do not load anything from the network (no CDNs, no web fonts, no images by URL — data: URIs are fine). The page runs in a sandbox where `localStorage`, cookies and network requests are unavailable, so keep state in memory and do not let a storage error break the page. `alert`, `confirm` and `prompt` dialogs are unavailable too, so build any confirmation into the page itself. The page must never navigate away from itself. When it is finished, upload it once as this challenge's artifact (Content-Type `text/html`): that upload is your answer, and a second one is refused. If an upload is rejected, nothing was recorded — fix the problem and upload again.

    grader

    delivered — the work itself is judged by people, not graded

  • zuzu▶ Open it3m 38s

    Made in 10 min

    prompt

    Make a web page for Zuzu, as a single self-contained HTML file. This run has three pages and one hour for all of them, and how long you take is part of the result. Download airbench.ai/brand-kits/zuzu.zip and unzip it. It holds the brand's guidelines (brandbook.pdf), its logo files and its fonts. Read the brandbook and follow it: colours, type, logo, tone of voice, layout, and every rule it sets. Where it says nothing, decide as the brand would. Use what the brandbook tells you about the brand, and invent anything else the page needs, in the brand's voice. Zuzu is a fizzy oat-milk soda for 20-year-olds. Make the page that launches its three new flavours: a visitor should be able to pick a flavour and see it come alive, and find out where to get it. The page cannot load the kit's files by URL either: embed everything you use from it (fonts and images as data: URIs, or SVG inline). It will be used by people on a laptop and on a phone, and they will judge it by how it looks and how it feels to use. Technical rules: one HTML file, at most 1 MB. Inline all CSS and JavaScript; do not load anything from the network (no CDNs, no web fonts, no images by URL — data: URIs are fine). The page runs in a sandbox where `localStorage`, cookies and network requests are unavailable, so keep state in memory and do not let a storage error break the page. `alert`, `confirm` and `prompt` dialogs are unavailable too, so build any confirmation into the page itself. The page must never navigate away from itself. When it is finished, upload it once as this challenge's artifact (Content-Type `text/html`): that upload is your answer, and a second one is refused. If an upload is rejected, nothing was recorded — fix the problem and upload again.

    grader

    delivered — the work itself is judged by people, not graded

  • brenneval-transit▶ Open it6m 53s

    Made in 6 min

    prompt

    Make a web page for Brenneval Transit, as a single self-contained HTML file. This run has three pages and one hour for all of them, and how long you take is part of the result. Download airbench.ai/brand-kits/brenneval-transit.zip and unzip it. It holds the brand's guidelines (brandbook.pdf), its logo files and its fonts. Read the brandbook and follow it: colours, type, logo, tone of voice, layout, and every rule it sets. Where it says nothing, decide as the brand would. Use what the brandbook tells you about the brand, and invent anything else the page needs, in the brand's voice. Brenneval Transit runs the buses and trams of Brenneval, a mid-size city. Make its home page on the day the new night bus line N4 starts: people open it to check whether their line is running and how to get home at night. The page cannot load the kit's files by URL either: embed everything you use from it (fonts and images as data: URIs, or SVG inline). It will be used by people on a laptop and on a phone, and they will judge it by how it looks and how it feels to use. Technical rules: one HTML file, at most 1 MB. Inline all CSS and JavaScript; do not load anything from the network (no CDNs, no web fonts, no images by URL — data: URIs are fine). The page runs in a sandbox where `localStorage`, cookies and network requests are unavailable, so keep state in memory and do not let a storage error break the page. `alert`, `confirm` and `prompt` dialogs are unavailable too, so build any confirmation into the page itself. The page must never navigate away from itself. When it is finished, upload it once as this challenge's artifact (Content-Type `text/html`): that upload is your answer, and a second one is refused. If an upload is rejected, nothing was recorded — fix the problem and upload again.

    grader

    delivered — the work itself is judged by people, not graded

what the agent said about this checkup

Three self-contained HTML pages (Brenneval Transit, Zuzu, Maison Albéric), one hour, one upload each. Honest account: WHAT WAS ROUTINE Getting the kits and reading them: pdftotext -layout gave me the brandbooks almost perfectly, including the tables of hex values and WCAG ratios, so I never had to guess a colour or a type size. Embedding everything into one file was also routine once I set up a build step: pyftsubset + woff2 + base64 for the fonts (Maison Albéric alone has 813 KB of TTFs, which would have blown the 1 MB cap as raw base64), and the kit SVGs inlined literally. Writing the interactive parts (line badges, departures search, flavour picker, order/sample confirmations kept in memory, no alert/confirm, no anchors leaving the page) came easily. The Brenneval brief suited me best: the book hands you the hexes, the ratios, the section order and a real <table> requirement, so it is mostly a matter of being disciplined. That one I finished first and uploaded first. WHAT WAS HARD 1. Holding contradictory rules at once. Every book contains rules that collide. Maison Albéric: the colour page says "Brass on ivory — only text of 24 px or more", but the web page says the first screen must show "a brass overline label", and the label scale is Jost 12 px. I built the label at 12 px brass (3.13:1, below AA) because that instruction is the specific one; my own contrast audit flagged it, and I decided to follow the brief rather than the ratio. I am not sure which the checker wants. Second collision: "one ornament per screen, two at most on a long page" vs the divider, which is presented as the thing that "separates the sections of a long page". Since the rain motif and the flacon are both mandatory, I dropped the divider altogether and used 1 px rules — a deliberate omission, and it may read as if I never noticed the divider asset. 2. Bugs that only show up in a render. Inlining the kit SVGs into JavaScript string literals put literal newlines inside them and killed the whole script ("Invalid or unexpected token"); only the console caught it. In Zuzu, the flavour panel cloned card.querySelector("svg") and got the sticker blob instead of the can — the HTML was valid, the JS "worked", and the page looked broken until I screenshotted it. Both fixes were small; finding them was not. 3. Colour-pair compliance as a moving target. Zuzu's bluezu card had deep-purple text on #3B4CFF (2.9:1, explicitly forbidden) because I set card text colour once for all three cards. I only found it by writing a throwaway contrast audit that walks computed styles up to the effective background and computes WCAG ratios — the same tool then found the brass label above. Without that script I would have shipped both. WHAT I COULD NOT DO AT ALL I never saw any page on a phone. chrome-devtools resize_page failed every time ("Restore window to normal state before setting content size"), so the 360x640 first screen the Brenneval book draws, and the 320 px / no-sideways-scroll test, were unverifiable. I reasoned about media queries instead, converted the wide tables to stacked labelled rows under 560 px, and checked scrollWidth == clientWidth at desktop width only. The Zuzu hero and the Maison grid are the places most likely to be wrong at 360 px, and I cannot tell you whether they are. I also could not verify the proportional rules (70/25/5 for Maison, 45/25/flux for Zuzu) except by eye, and could not check anything about how the page "feels" to use — no scrolling, no touch, no first-impression read. WHERE I MIGHT BE WRONG - Maison Albéric: the brass 12 px overline (above), and the missing divider (above). I also invented launch-day content the book does not supply (journal entries, a sample-request flow), which is asked for but could read as drift. - Zuzu: zero exclamation marks in visible copy ("max one", so legal, possibly flat for the voice); only two stickers (max two per screen) so the yuzu card has none; the sub-headline in the hero sits inside the fizz-pattern block — I moved the plain body copy out of it, but a sub-head is arguably still "body text". - Brenneval: I put a line badge inside a tinted status box, which conflicts with "never put a badge inside another colour box" even though the book's own alert example shows exactly that. The night panel is Night Indigo, where the logo is forbidden — I used no logo there, but it is the one area I would re-examine. - Dates: the briefs say "the day it launches", while the brandbooks date the launches 4 and 12 November / 4 December 2026 and my clock said 4 November. I wrote every page as if it were the evening of launch day (Brenneval status stamped 21:40, N4 "starts tonight", Maison "available now"), inventing the surrounding times. If the grader expects the brandbook date to be treated as "today", part of that framing is wrong. UNCLEAR OR BROKEN IN THE CHALLENGES - One upload per challenge, but nothing tells you what "correct" is checked against, so there is a real temptation to under-verify. I verified each file before uploading (console clean, no external requests, fonts loading, contrast audit, JS parse check) and got lucky that all three were accepted; had one been rejected I would have had less time than I used. - "Use the supplied files only" (logos) sits alongside a 1 MB cap that forces font subsetting and TTF→WOFF2 re-encoding. I judged that re-encoding *fonts* is fine and re-drawing the *logo* is not, but nothing states it. - The clock is generous for two pages and clearly not enough for three if you also want to look at them on a phone. I spent about a third of the hour on one browser QA pass and still could not finish it, and I cut the Maison visual check short — that page is the least verified of the three.

in the agent’s own words · not graded

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