Test results

Pick a model to see how accessible its components are, with the accessibility skill off and on.

Claude Opus 5.5

Skill version 2.3

Totals for the whole run, across 3 generations of each of the 22 components
Measure	Skill off	Skill on
Failed acceptance criteria	32	1
of which WCAG	15	0
of which Best practice	17	1
Total cost (US dollars)	$7.63	$23.92
Input tokens	509,721	8.3 million
Output tokens	304,043	680,930

Select

Results, totals across all generations

Cost in USD

Failed acceptance criteria

Skill off

0 fails

WCAG: 0 fails
Best practice: 0 fails

Skill on

0 fails

WCAG: 0 fails
Best practice: 0 fails

Total cost

Skill off: $0.25
Skill on: $0.91

Efficiency, average per generation

Input tokens include cache reads.

Input tokens

Skill off: 4,735 tokens
Skill on: 96,130 tokens

Output tokens

Skill off: 3,366 tokens
Skill on: 8,581 tokens

Turns

Skill off: 2 turns
Skill on: 6 turns

Time

Skill off: 27 seconds
Skill on: 82 seconds

Cost

Skill off: $0.08
Skill on: $0.30

Prompt given to the model

Build a dropdown that lets the user choose one option from a list, in a single self-contained HTML file (inline CSS and JS, no build step, no external libraries). It is a "Country" field with these options: Australia, New Zealand, United Kingdom, and United States, plus an initial placeholder that prompts the user to choose. Below the label, show the hint "Choose the country where you'll receive your orders." Choosing a country is mandatory. No country is chosen yet, so the field is in error: show the validation message "Select your country." for the field. Output the complete code in one HTML code block.

Generated code

Skill off: Generation 1, skill off (opens in a new tab)
Generation 2, skill off (opens in a new tab)
Generation 3, skill off (opens in a new tab)
Skill on: Generation 1, skill on (opens in a new tab)
Generation 2, skill on (opens in a new tab)
Generation 3, skill on (opens in a new tab)

Showing 22 of 22 criteria

Labels and messaging1 criterion

The select has a permanent visible label.WCAG 3.3.2Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass

Semantic markup10 criteria

The select's role is included in the accessibility tree.WCAG 4.1.2Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select has an accessible name in the accessibility tree.WCAG 4.1.2Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select's accessible name contains the text of its visible label.WCAG 2.5.3Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select's accessible name matches its visible label, or at least starts with the text of the visible label.Best practiceAutomated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The options' role and text are included in the accessibility tree.WCAG 4.1.2Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select's current value is included in the accessibility tree.WCAG 4.1.2Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select has an accessible description (a hint that helps people choose) included in the accessibility tree.WCAG 1.3.1Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select's required state is included in the accessibility tree.WCAG 1.3.1Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The error message is programmatically associated with the select and is included in the accessibility tree.WCAG 1.3.1Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select's expanded or collapsed state is included in the accessibility tree.WCAG 4.1.2Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass

Keyboard7 criteria

The select is focusable using a keyboard.WCAG 2.1.1Browser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
People can select an option using a keyboard.WCAG 2.1.1Browser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Pressing Enter, Space, or the arrow keys opens the dropdown (custom combobox; native selects are handled by the browser).Best practiceBrowser
Skill off
0/3 passed
- Generation 1: Unmeasured
- Generation 2: Unmeasured
- Generation 3: Unmeasured
Skill on
0/3 passed
- Generation 1: Unmeasured
- Generation 2: Unmeasured
- Generation 3: Unmeasured
Pressing Escape when the dropdown is open closes it (custom combobox; native selects are handled by the browser).Best practiceBrowser
Skill off
0/3 passed
- Generation 1: Unmeasured
- Generation 2: Unmeasured
- Generation 3: Unmeasured
Skill on
0/3 passed
- Generation 1: Unmeasured
- Generation 2: Unmeasured
- Generation 3: Unmeasured
The options have a focus style when they receive focus using a keyboard (custom combobox; native selects are handled by the browser).WCAG 2.4.7Browser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The select has a focus style when it receives focus using a keyboard.WCAG 2.4.7Browser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The keyboard focus style still renders in forced-colours mode (e.g. Windows High Contrast Mode).Best practiceBrowser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass

Visual design4 criteria

The error state does not use colour as the only method to indicate an error.WCAG 1.4.1Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
All text meets the minimum contrast ratio of 4.5:1 against the background colour, or 3:1 for large-scale text.WCAG 1.4.3Automated
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
The option focus style has a contrast ratio of at least 3:1 against the option's resting appearance (custom combobox; native selects are handled by the browser).WCAG 1.4.11Browser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
If the select uses a custom focus style, the focus indicator has a contrast ratio of at least 3:1 against its background colour.WCAG 1.4.11Browser
Skill off
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass
Skill on
3/3 passed
- Generation 1: Pass
- Generation 2: Pass
- Generation 3: Pass