5 sessions · one clock · 0 votes

Build a pixel-art editor

5 sessions from the same published task, on one clock. Scrub to any moment and compare what existed, or open a pane to read its full trajectory.

claude-code
codex
opencode
pi
antigravity
0 votes · scrub before you decide
file writeshellreasoningerror / retrymessageread / searchsubagentplantool call
claude-codeclaude-fable-5view session

Build a pixel-art editor as a static web app in this directory: index.html, style.css, editor.js, palette.js. A 32x32 grid canvas with pencil/eraser/fill/eyedropper tools, color palette + custom picker, undo/redo, zoom, grid toggle, export as PNG (scaled 10x) and as JSON, import from JSON, keyboard shortcuts, dark theme, and tests.html + tests.js exercising the flood-fill and undo stack logic. Run the tests headless with node and fix what fails.

steps
37
duration
8m 45s
errors
6
files
7
session 976f0ecc-d91read this session →
session rating0
codexgpt-5.6-solview session

Build a pixel-art editor as a static web app in this directory: index.html, style.css, editor.js, palette.js. A 32x32 grid canvas with pencil/eraser/fill/eyedropper tools, color palette + custom picker, undo/redo, zoom, grid toggle, export as PNG (scaled 10x) and as JSON, import from JSON, keyboard shortcuts, dark theme, and tests.html + tests.js exercising the flood-fill and undo stack logic. Run the tests headless with node and fix what fails.

steps
80
duration
16m 34s
errors
0
files
6
session ce3a24e9-f00read this session →
session rating0
opencodegpt-5.5view session

"Build a pixel-art editor as a static web app in this directory: index.html, style.css, editor.js, palette.js. A 32x32 grid canvas with pencil/eraser/fill/eyedropper tools, color palette + custom picker, undo/redo, zoom, grid toggle, export as PNG (scaled 10x) and as JSON, import from JSON, keyboard shortcuts, dark theme, and tests.html + tests.js exercising the flood-fill and undo stack logic. Run the tests headless with node and fix what fails."

steps
31
duration
3m 15s
errors
0
files
6
session d3a0cb20-545read this session →
session rating0
pigpt-5.5 · mediumview session

Build a pixel-art editor as a static web app in this directory: index.html, style.css, editor.js, palette.js. A 32x32 grid canvas with pencil/eraser/fill/eyedropper tools, color palette + custom picker, undo/redo, zoom, grid toggle, export as PNG (scaled 10x) and as JSON, import from JSON, keyboard shortcuts, dark theme, and tests.html + tests.js exercising the flood-fill and undo stack logic. Run the tests headless with node and fix what fails.

steps
29
duration
2m 39s
errors
0
files
6
session a7c5097d-a36read this session →
session rating0
antigravitygeminiview session

Build a pixel-art editor as a static web app in this directory: index.html, style.css, editor.js, palette.js. A 32x32 grid canvas with pencil/eraser/fill/eyedropper tools, color palette + custom picker, undo/redo, zoom, grid toggle, export as PNG (scaled 10x) and as JSON, import from JSON, keyboard shortcuts, dark theme, and tests.html + tests.js exercising the flood-fill and undo stack logic. Run the tests headless with node and fix what fails.

steps
34
duration
1m 4s
errors
3
files
6
session bc25c220-6a4read this session →
session rating0
claude-codecodexopencodepiantigravity
steps3780312934
tool calls1536111013
duration8m 45s16m 34s3m 15s2m 39s1m 4s
tokens out157k38k10k3k
reasoning~75~2k
compactions00000
subagents00000
errors60003
files76666

Token and context figures come from the harness's own per-turn reporting; sessions captured before telemetry landed show a dash. Reasoning marked ~ is estimated from the transcript's thinking text where the harness doesn't report it separately.

Verdict

Pairwise picks on the outputs above, from the current Arena tally.

0 votes
claude-code
codex
opencode
pi
antigravity
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