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Sidebar and content layout that never overflows, including at the tablet width

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
RESPO-0003
Domain
Websites
Difficulty
hard

Leading published run: claude-opus-4-8 (low reasoning) at 100.0% composite. Lowest: deepseek-v4-pro 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 HTML file (`index.html`) that renders with no build step and no network calls (inline all CSS and JS; no external fonts, scripts, or images). Build a documentation layout with two panes inside a container with id="docs-layout": - a sidebar (id="docs-sidebar") listing at least four section links, and - a content pane (id="docs-content") with an <h1> and a paragraph. Make it fully fluid so it never scrolls horizontally at any width: - on a phone (around 360px wide) the two panes stack in one column (the content pane sits below the sidebar), - on a tablet (around 768px wide) the layout must not overflow horizontally - this is the width where a fixed-pixel pane usually breaks, so size the panes fluidly, and - on a desktop (around 1440px wide) the sidebar and content sit side by side on one row. Do not pin any pane, table, or image to a fixed pixel width wider than a tablet viewport. The page must have zero horizontal overflow at each of 360px, 768px, and 1440px wide. Use plain, accessible markup.

Anthropicclaude-opus-4-8
Low reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
High reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.6-sol
Max reasoning
API single-shot2026-07-09
gpt-5.6-sol rendering of the Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
OpenAIgpt-5.6-luna
High reasoning
API single-shot2026-07-09
gpt-5.6-luna rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.1-pro-preview
High reasoning
API single-shot2026-06-23
gemini-3.1-pro-preview rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.5-flash
default reasoning
API single-shot2026-06-23
gemini-3.5-flash rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Googlegemini-3.1-flash-lite
default reasoning
API single-shot2026-06-23
gemini-3.1-flash-lite rendering of the Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width 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 Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
DeepSeekdeepseek-v4-flash
default reasoning
API single-shot2026-06-25
deepseek-v4-flash rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 100.0%
Open
Composite 100.0%Objective 100.0%
Open outputFull run
Anthropicclaude-opus-4-8
Medium reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-opus-4-8
Extra-high reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-opus-4-8
Max reasoning
Agent harness2026-07-21
claude-opus-4-8 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-sonnet-4-6
High reasoning
Agent harness2026-07-21
claude-sonnet-4-6 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-fable-5
High reasoning
Agent harness2026-07-09
claude-fable-5 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Anthropicclaude-haiku-4-5
High reasoning
Agent harness2026-07-09
claude-haiku-4-5 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Zhipuglm-5.2
default reasoning
API single-shot2026-07-17
glm-5.2 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
Moonshotkimi-k2.7-code
default reasoning
API single-shot2026-07-17
kimi-k2.7-code rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
OpenAIgpt-5.6-sol
High reasoning
API single-shot2026-07-09
gpt-5.6-sol rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
xAIgrok-4.5
High reasoning
API single-shot2026-07-09
grok-4.5 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
xAIgrok-4.5
Low reasoning
API single-shot2026-07-09
grok-4.5 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
xAIgrok-4.3
default reasoning
API single-shot2026-07-03
grok-4.3 rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
xAIgrok-4.20-reasoning
default reasoning
API single-shot2026-06-25
grok-4.20-reasoning rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
xAIgrok-composer-2.5-fast
default reasoning
Agent harness2026-06-25
grok-composer-2.5-fast rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run
DeepSeekdeepseek-v4-pro
default reasoning
API single-shot2026-06-25
deepseek-v4-pro rendering of the Sidebar and content layout that never overflows, including at the tablet width benchmark - composite 0.0%
Open
Composite 0.0%Objective 0.0%
Open outputFull run

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