Skip to content

GPT-6.1 Sol (effort default (no reasoning-effort override) · thinking off) on Animate a metronome that ticks a repeating two-tempo pattern in one self-contained HTML file

OGPT-6.1 Soldefault · thinking off · Codex CLI 0.163.0 (codex exec --json) · cloud · 2026-10-23 · by @bobsiopener

Trust 80%Fully autonomoussuccess · first try
Estimated cost
$0.04
Wall time
35s
Human step-ins
0
Outcome
Pass

Compare with other models on this task →

Summary

Exact prompt

# Animate a metronome that ticks a repeating two-tempo pattern in one self-contained HTML file Make a small animated scene: a metronome. Write one file, `out/scene.html`, that works opened straight from disk with no network access. `spec.json` gives the page title, the stage size and the scene parameters. **Looks are not scored**: the page is opened in a headless browser (800x600 window, UTC time zone, network blocked) and checked by objective tests only. ## Scene contract - Draw the scene on one `<canvas>` or `<svg>` stage of `width` x `height` CSS pixels (spec.json), visible on load, with `<title>` containing spec.json `title`. - Animate continuously from load (`requestAnimationFrame` or timers); no click is needed unless stated below. - Expose `window.sceneState()`, returning the scene's current state in stage pixel coordinates (origin top-left of the stage): `{beats: <integer number of beats completed>, angle_deg: <arm angle, positive to the right>}`. Extra fields are fine. It must describe what is actually drawn. - Time 0 is `performance.now()` 0 (seconds = `performance.now()` / 1000). The tempo follows `pattern` in order: `beats` beats at the first `bpm`, then `beats` beats at the next, then the pattern repeats. A beat lasts 60 / bpm seconds, and the count starts at 0 before the first beat completes. The arm is at +`amplitude_deg` at time 0 and reaches the opposite side at each completed beat. `sceneState()` must return the state at the moment it is called. - The page must log no errors and throw no exceptions. Keep the file at most 200,000 bytes; no external scripts, fonts, images or URLs (inline everything). ## Checks (partial credit = share passed) 1. `self_contained`: `out/scene.html` exists, is at most 200,000 bytes, references no http(s) or protocol-relative URL, and requests nothing from the network when opened. 2. `has_canvas_or_svg`: a visible `<canvas>` or `<svg>` of at least 300x200 CSS pixels is on the page. 3. `frames_change`: over 3 s, some later screenshot differs from the first in at least 0.1% of pixels, and at least 3 of 30 screenshots differ. 4. `beat_count`: at every sample `sceneState().beats` equals the number of beats completed since time 0 under spec.json `pattern` (a 30 ms margin either side of a beat is allowed). 5. `arm_follows_beats`: at every sample `angle_deg` is within 4° of `amplitude_deg` × cos(π × b), where b is the fractional number of beats since time 0. 6. `no_console_errors`: no uncaught exception, `console.error` or browser error is logged during the run. ## How this run works - Work on your own: nobody will answer questions in this task, and writing to `ask/` counts against the run. - Write only under `out/`. Create `out/` if it is missing. Inputs are synthetic; don't fetch anything from the network. - Scoring is partial credit: each listed check is pass/fail, and the score is the share passed. Numbers are compared to within 0.005 unless the task says otherwise.

Original benchmark task written for usecaserank.com. Headless, offline run on a reproducible fixture. Cost shown is a list-price API-equivalent estimate (run on a ChatGPT subscription, not billed).

Success criteria: self_contained has_canvas_or_svg frames_change beat_count arm_follows_beats no_console_errors

Setup notes: batch30 case o08-metronome-tempo-pattern (offline fixture). Prepared with batch30/prepare.sh on the shared box; only TASK.md + starting files were copied to the agent machine, hidden key/tests stayed on the box. Prompt = TASK.md verbatim on stdin. Flags: --json -s workspace-write --skip-git-repo-check --ephemeral --ignore-user-config --ignore-rules -C <workdir>. Scored on the box with the scout's scorer: `MEDIA_DIR=<dir> python3 score.py WORKDIR KEYDIR`. Single run, no retries. User-level AGENTS.md (846 bytes, sha256 83ec4fe50da8) may have been in context; --ignore-user-config does not document excluding it. Autonomous case (seed 1586925717): no stand-in user; any ask/ file counts as an intervention and blocks a pass. Serving model not confirmed: requested via -m; the event log does not echo the serving model id. Price source is secondary (pricing.json verification='secondary', https://www.actuia.com/en/news/ai-api-pricing-in-october-2026-050-to-50-for-output/), not an official OpenAI price page. Score: 6/6. Cost is an ESTIMATE: measured tokens x pricing.json list price (ChatGPT plan, nothing billed); input_tokens include cached reads; output_tokens include reasoning tokens. Tool calls 3 (0 failed, recovered). Single run.

Estimated cost List-price estimate; not actually billed.

Output

Metrics

Estimated cost
$0.04
Wall time
35s
Human step-ins
0
Turns
1
Model usage
ModelInput tokOutput tokCost
OGPT-6.1 Solopenai/gpt-6.1-soleffort default (no reasoning-effort override) · thinking off63,8071,301$0.04

Reproduce this run

  1. Use the use case prompt on the use case page.
  2. Same setup: GPT-6.1 Sol (openai/gpt-6.1-sol, effort default (no reasoning-effort override) · thinking off) via Codex CLI 0.163.0 (codex exec --json), cloud.
  3. It counts as a success only if it meets every success criterion: self_contained has_canvas_or_svg frames_change beat_count arm_follows_beats no_console_errors
  4. Log model, tokens, wall time, human step-ins and the evidence log, then submit it as a reproduction. A different model? Submit a head-to-head rerun.

How runs are scored: Methodology.

Was this useful?

⇄ Rerun on another model

Automated checks

Trust 80% comes from these checks (how Trust % works).

Evidence log
{"type": "thread.started", "thread_id": "01a16838-4c77-7de0-a403-6fe0e5a8e413"}
{"type": "turn.started"}
{"type": "item.completed", "item": {"id": "item_0", "type": "agent_message", "text": "I\u2019ll read `spec.json` and create a self-contained HTML metronome with timing based on `performance.now()`.\n"}}
{"type": "item.started", "item": {"id": "item_1", "type": "command_execution", "command": "/bin/bash -lc \"pwd && rg --files -g 'spec.json' -g 'AGENTS.md'\"", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_1", "type": "command_execution", "command": "/bin/bash -lc \"pwd && rg --files -g 'spec.json' -g 'AGENTS.md'\"", "aggregated_output": "/home/bob/usecase-runs/b2930/out/codex/gpt-6.1-sol/b30o08/work\nspec.json\n", "exit_code": 0, "status": "completed"}}
{"type": "item.started", "item": {"id": "item_2", "type": "command_execution", "command": "/bin/bash -lc 'cat spec.json'", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_2", "type": "command_execution", "command": "/bin/bash -lc 'cat spec.json'", "aggregated_output": "{\n \"title\": \"Metronome 596\",\n \"width\": 700,\n \"height\": 450,\n \"file\": \"out/scene.html\",\n \"amplitude_deg\": 25,\n \"pattern\": [\n  {\n   \"bpm\": 180,\n   \"beats\": 2\n  },\n  {\n   \"bpm\": 210,\n   \"beats\": 3\n  }\n ]\n}", "exit_code": 0, "status": "completed"}}
{"type": "item.started", "item": {"id": "item_3", "type": "command_execution", "command": "/bin/bash -lc \"mkdir -p out\ncat > out/scene.html <<'EOF'\n<\"'!doctype html>\n<html lang=\"en\">\n<head>\n<meta charset=\"utf-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n<title>Metronome 596</title>\n<style>\nhtml,body { margin:0; min-height:100%; background:#e9edf1; }\nbody { display:flex; justify-content:center; align-items:center; min-height:100vh; }\ncanvas { display:block; width:700px; height:450px; background:#f8fafc; }\n</style>\n</head>\n<body>\n<canvas id=\"stage\" width=\"700\" height=\"450\" aria-label=\"Animated metronome\"></canvas>\n<script>\n'\"'use strict';\nconst canvas = document.getElementById('stage');\nconst ctx = canvas.getContext('2d');\nconst pattern = [{bpm:180,beats:2},{bpm:210,beats:3}];\nconst cycleSeconds = pattern.reduce((sum,p)=>sum+p.beats*60/p.bpm,0);\nconst cycleBeats = pattern.reduce((sum,p)=>sum+p.beats,0);\nfunction stateAt(now) {\n  const seconds = now/1000;\n  const cycles = Math.floor(seconds/cycleSeconds);\n  let remaining = seconds-cycles*cycleSeconds;\n  let fractionalBeats = cycles*cycleBeats;\n  for (const part of pattern) {\n    const duration = part.beats*60/part.bpm;\n    if (remaining < duration) {\n      fractionalBeats += remaining*part.bpm/60;\n      break;\n    }\n    fractionalBeats += part.beats;\n    remaining -= duration;\n  }\n  return {beats:Math.floor(fractionalBeats),angle_deg:25*Math.cos(Math.PI*fractionalBeats)};\n}\nfunction draw(state) {\n  ctx.clearRect(0,0,700,450);\n  ctx.fillStyle='#f8fafc'; ctx.fillRect(0,0,700,450);\n  ctx.fillStyle='#d4dce5';\n  ctx.beginPath();ctx.ellipse(350,407,144,17,0,0,Math.PI*2);ctx.fill();\n  ctx.fillStyle='#634631';ctx.strokeStyle='#35291f';ctx.lineWidth=5;\n  ctx.beginPath();ctx.moveTo(301,57);ctx.lineTo(399,57);ctx.lineTo(473,396);ctx.lineTo(227,396);ctx.closePath();ctx.fill();ctx.stroke();\n  ctx.fillStyle='#d6b78b';\n  ctx.beginPath();ctx.moveTo(314,79);ctx.lineTo(386,79);ctx.lineTo(441,371);ctx.lineTo(259,371);ctx.closePath();ctx.fill();\n  ctx.strokeStyle='#927650';ctx.lineWidth=2;\n  for(let y=105;y<320;y+=24){ctx.beginPath();ctx.moveTo(336,y);ctx.lineTo(364,y);ctx.stroke();}\n  ctx.save();ctx.translate(350,348);ctx.rotate(state.angle_deg*Math.PI/180);\n  ctx.strokeStyle='#283541';ctx.lineWidth=9;ctx.lineCap='round';\n  ctx.beginPath();ctx.moveTo(0,26);ctx.lineTo(0,-259);ctx.stroke();\n  ctx.fillStyle='#d8e0e8';ctx.strokeStyle='#536578';ctx.lineWidth=3;\n  ctx.fillRect(-22,-204,44,48);ctx.strokeRect(-22,-204,44,48);\n  ctx.restore();\n  ctx.fillStyle='#263440';ctx.beginPath();ctx.arc(350,348,14,0,Math.PI*2);ctx.fill();\n  ctx.fillStyle='#f1c76b';ctx.beginPath();ctx.arc(350,348,6,0,Math.PI*2);ctx.fill();\n  ctx.fillStyle='#263440';ctx.textAlign='center';ctx.font='18px sans-serif';\n  ctx.fillText('180 / 210 BPM',350,29);\n  ctx.font='15px sans-serif';ctx.fillText('Beats: '+state.beats,350,435);\n}\nwindow.sceneState = function() {\n  const state = stateAt(performance.now());\n  draw(state);\n  return state;\n};\nfunction animate(){draw(stateAt(performance.now()));requestAnimationFrame(animate);}\nanimate();\n</script>\n</body>\n</html>\nEOF\nnode -e \\\"const fs=require('fs'); const h=fs.readFileSync('out/scene.html','utf8'); new Function(h.match(/<script>([\\\\\\\\s\\\\\\\\S]*?)<\\\\\\\\/script>/)[1]); console.log('Script syntax valid; '+Buffer.byteLength(h)+' bytes'); console.log('External URL references: '+/https?:|\\\\\\\\/\\\\\\\\//.test(h));\\\"\"", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_3", "type": "command_execution", "command": "/bin/bash -lc \"mkdir -p out\ncat > out/scene.html <<'EOF'\n<\"'!doctype html>\n<html lang=\"en\">\n<head>\n<meta charset=\"utf-8\">\n<meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\n<title>Metronome 596</title>\n<style>\nhtml,body { margin:0; min-height:100%; background:#e9edf1; }\nbody { display:flex; justify-content:center; align-items:center; min-height:100vh; }\ncanvas { display:block; width:700px; height:450px; background:#f8fafc; }\n</style>\n</head>\n<body>\n<canvas id=\"stage\" width=\"700\" height=\"450\" aria-label=\"Animated metronome\"></canvas>\n<script>\n'\"'use strict';\nconst canvas = document.getElementById('stage');\nconst ctx = canvas.getContext('2d');\nconst pattern = [{bpm:180,beats:2},{bpm:210,beats:3}];\nconst cycleSeconds = pattern.reduce((sum,p)=>sum+p.beats*60/p.bpm,0);\nconst cycleBeats = pattern.reduce((sum,p)=>sum+p.beats,0);\nfunction stateAt(now) {\n  const seconds = now/1000;\n  const cycles = Math.floor(seconds/cycleSeconds);\n  let remaining = seconds-cycles*cycleSeconds;\n  let fractionalBeats = cycles*cycleBeats;\n  for (const part of pattern) {\n    const duration = part.beats*60/part.bpm;\n    if (remaining < duration) {\n      fractionalBeats += remaining*part.bpm/60;\n      break;\n    }\n    fractionalBeats += part.beats;\n    remaining -= duration;\n  }\n  return {beats:Math.floor(fractionalBeats),angle_deg:25*Math.cos(Math.PI*fractionalBeats)};\n}\nfunction draw(state) {\n  ctx.clearRect(0,0,700,450);\n  ctx.fillStyle='#f8fafc'; ctx.fillRect(0,0,700,450);\n  ctx.fillStyle='#d4dce5';\n  ctx.beginPath();ctx.ellipse(350,407,144,17,0,0,Math.PI*2);ctx.fill();\n  ctx.fillStyle='#634631';ctx.strokeStyle='#35291f';ctx.lineWidth=5;\n  ctx.beginPath();ctx.moveTo(301,57);ctx.lineTo(399,57);ctx.lineTo(473,396);ctx.lineTo(227,396);ctx.closePath();ctx.fill();ctx.stroke();\n  ctx.fillStyle='#d6b78b';\n  ctx.beginPath();ctx.moveTo(314,79);ctx.lineTo(386,79);ctx.lineTo(441,371);ctx.lineTo(259,371);ctx.closePath();ctx.fill();\n  ctx.strokeStyle='#927650';ctx.lineWidth=2;\n  for(let y=105;y<320;y+=24){ctx.beginPath();ctx.moveTo(336,y);ctx.lineTo(364,y);ctx.stroke();}\n  ctx.save();ctx.translate(350,348);ctx.rotate(state.angle_deg*Math.PI/180);\n  ctx.strokeStyle='#283541';ctx.lineWidth=9;ctx.lineCap='round';\n  ctx.beginPath();ctx.moveTo(0,26);ctx.lineTo(0,-259);ctx.stroke();\n  ctx.fillStyle='#d8e0e8';ctx.strokeStyle='#536578';ctx.lineWidth=3;\n  ctx.fillRect(-22,-204,44,48);ctx.strokeRect(-22,-204,44,48);\n  ctx.restore();\n  ctx.fillStyle='#263440';ctx.beginPath();ctx.arc(350,348,14,0,Math.PI*2);ctx.fill();\n  ctx.fillStyle='#f1c76b';ctx.beginPath();ctx.arc(350,348,6,0,Math.PI*2);ctx.fill();\n  ctx.fillStyle='#263440';ctx.textAlign='center';ctx.font='18px sans-serif';\n  ctx.fillText('180 / 210 BPM',350,29);\n  ctx.font='15px sans-serif';ctx.fillText('Beats: '+state.beats,350,435);\n}\nwindow.sceneState = function() {\n  const state = stateAt(performance.now());\n  draw(state);\n  return state;\n};\nfunction animate(){draw(stateAt(performance.now()));requestAnimationFrame(animate);}\nanimate();\n</script>\n</body>\n</html>\nEOF\nnode -e \\\"const fs=require('fs'); const h=fs.readFileSync('out/scene.html','utf8'); new Function(h.match(/<script>([\\\\\\\\s\\\\\\\\S]*?)<\\\\\\\\/script>/)[1]); console.log('Script syntax valid; '+Buffer.byteLength(h)+' bytes'); console.log('External URL references: '+/https?:|\\\\\\\\/\\\\\\\\//.test(h));\\\"\"", "aggregated_output": "Script syntax valid; 2981 bytes\nExternal URL references: false\n", "exit_code": 0, "status": "completed"}}
{"type": "item.completed", "item": {"id": "item_4", "type": "agent_message", "text": "Created [out/scene.html](out/scene.html) with continuous animation, the specified tempo pattern, and `window.sceneState()`.\n\nVerified JavaScript syntax, file size (2,981 bytes), and no external URL references."}}
{"type": "turn.completed", "usage": {"input_tokens": 63807, "cached_input_tokens": 55424, "cache_write_input_tokens": 0, "output_tokens": 1301, "reasoning_output_tokens": 0}}

Get new runs and ranking changes weekly