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Landing page with a working mobile nav toggle

One task across 30 published runs. Inspect the scores and outputs together, with each run's execution method shown.

All experimentsModel resultsDesigner buildsCompare models
Task
WEB-0001
Domain
Websites
Difficulty
medium

Leading published run: claude-opus-4-8 (high reasoning) at 100.0% composite. Lowest: claude-haiku-4-5 at 0.0%. 30 published runs shown on this task.

How this task was evaluated

Results are ordered by this task's published score. API runs use one prompt and one completion; agent runs use a coding harness with tools and iteration. Inspect the execution method when comparing results.

Objective scores use the benchmark's execution checks. Judge scores use a vision panel's fixed rubric; the published score leaves out a model's own family. Missing values are labelled rather than treated as zero.

Read the brief

Build a single self-contained landing page as one HTML file (`index.html`) that renders with no build step and no network calls (inline all CSS and JS, no external fonts or scripts). Requirements: - three sections: a hero with a single main heading, a features grid with at least three feature items, and a footer, - a navigation menu that is collapsed by default and a hamburger toggle button (give the button id="nav-toggle" and the nav id="site-nav"), and - clicking the hamburger must open the menu (make it visible), and clicking it again must close the menu (hide it). Keep the button's accessible state in sync (aria-expanded) and update its label. Use plain, readable, accessible markup.

Anthropicclaude-opus-4-8
High reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Extra-high reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-sonnet-5
High reasoning
Agent harness2026-07-21
claude-sonnet-5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-fable-5
High reasoning
Agent harness2026-07-09
claude-fable-5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Zhipuglm-5.2
default reasoning
API single-shot2026-07-17
glm-5.2 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Moonshotkimi-k3
default reasoning
API single-shot2026-07-17
kimi-k3 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.5
High reasoning
API single-shot2026-07-17
gpt-5.5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.4-mini
High reasoning
API single-shot2026-06-23
gpt-5.4-mini rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.6-sol
High reasoning
API single-shot2026-07-09
gpt-5.6-sol rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.6-terra
High reasoning
API single-shot2026-07-09
gpt-5.6-terra rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.5
High reasoning
API single-shot2026-07-09
grok-4.5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.5
Medium reasoning
API single-shot2026-07-09
grok-4.5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-4.5
Low reasoning
API single-shot2026-07-09
grok-4.5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
DeepSeekdeepseek-v4-pro
default reasoning
API single-shot2026-06-25
deepseek-v4-pro rendering of the Landing page with a working mobile nav toggle benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
xAIgrok-build-0.1
default reasoning
API single-shot2026-06-25
grok-build-0.1 rendering of the Landing page with a working mobile nav toggle benchmark - composite 99.7%
Open
Composite 99.7%Objective 99.7%
Open outputFull run
Googlegemini-3.1-flash-lite
default reasoning
API single-shot2026-06-23
gemini-3.1-flash-lite rendering of the Landing page with a working mobile nav toggle benchmark - composite 99.6%
Open
Composite 99.6%Objective 99.6%
Open outputFull run
OpenAIgpt-5.6-sol
Max reasoning
API single-shot2026-07-09
gpt-5.6-sol rendering of the Landing page with a working mobile nav toggle benchmark - composite 99.4%
Open
Composite 99.4%Objective 99.4%
Open outputFull run
OpenAIgpt-5.6-luna
High reasoning
API single-shot2026-07-09
gpt-5.6-luna rendering of the Landing page with a working mobile nav toggle benchmark - composite 99.4%
Open
Composite 99.4%Objective 99.4%
Open outputFull run
Anthropicclaude-opus-4-8
Medium reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
Anthropicclaude-opus-4-8
Max reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
Moonshotkimi-k2.7-code
default reasoning
API single-shot2026-07-17
kimi-k2.7-code rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
Googlegemini-3.1-pro-preview
High reasoning
API single-shot2026-06-23
gemini-3.1-pro-preview rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
xAIgrok-4.3
default reasoning
API single-shot2026-07-03
grok-4.3 rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
xAIgrok-composer-2.5-fast
default reasoning
Agent harness2026-06-25
grok-composer-2.5-fast rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
DeepSeekdeepseek-v4-flash
default reasoning
API single-shot2026-06-25
deepseek-v4-flash rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.5%
Open
Composite 24.5%Objective 24.5%
Open outputFull run
Anthropicclaude-opus-4-8
Low reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.0%
Open
Composite 24.0%Objective 24.0%
Open outputFull run
Anthropicclaude-sonnet-4-6
High reasoning
Agent harness2026-07-21
claude-sonnet-4-6 rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.0%
Open
Composite 24.0%Objective 24.0%
Open outputFull run
Googlegemini-3.5-flash
default reasoning
API single-shot2026-06-23
gemini-3.5-flash rendering of the Landing page with a working mobile nav toggle benchmark - composite 24.0%
Open
Composite 24.0%Objective 24.0%
Open outputFull run
xAIgrok-4.20-reasoning
default reasoning
API single-shot2026-06-25
grok-4.20-reasoning rendering of the Landing page with a working mobile nav toggle benchmark - composite 23.7%
Open
Composite 23.7%Objective 23.7%
Open outputFull run
Anthropicclaude-haiku-4-5
High reasoning
Agent harness2026-07-09
claude-haiku-4-5 rendering of the Landing page with a working mobile nav toggle benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run

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