GPT-6.1 Sol (effort default (no reasoning-effort override) · thinking off) on Animate hot-air balloons drifting over hills at sunrise in one self-contained HTML file
OGPT-6.1 Soldefault · thinking off · Codex CLI 0.163.0 (codex exec --json) · cloud · 2026-10-22 · by @bobsiopener
- Estimated cost
- $0.03
- Wall time
- 40s
- Human step-ins
- 0
- Outcome
- Pass
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Summary
Exact prompt
# Animate hot-air balloons drifting over hills at sunrise in one self-contained HTML file Make a small animated scene: a hot-air balloons at sunrise. 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): `{balloons: [{x, y}, ...], sun: {x, y}, hills: [ ... one entry per hill ... ]}`. Extra fields are fine. It must describe what is actually drawn. - The sun should still be rising for at least the first 10 s after load. - 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. `balloons_drift`: `sceneState().balloons` has exactly spec.json `balloons` entries and every balloon moves more than 2 px over about 3 s. 5. `sun_rises_over_hills`: the sun's y decreases by more than 0.5 px over about 3 s (it rises), its start is within 60 px of the stage, and `hills` has at least `min_hills` entries. 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 balloons_drift sun_rises_over_hills no_console_errors
Setup notes: Use Case Scout batch28 case d07-hot-air-balloons-sunrise (offline fixture). Prepared with batch28/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. 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 2 (0 failed, recovered). Single run.
Estimated cost List-price estimate; not actually billed.
Output
Metrics
- Estimated cost
- $0.03
- Wall time
- 40s
- Human step-ins
- 0
- Turns
- 1
| Model | Input tok | Output tok | Cost |
|---|---|---|---|
| OGPT-6.1 Solopenai/gpt-6.1-soleffort default (no reasoning-effort override) · thinking off | 49,249 | 1,342 | $0.03 |
Reproduce this run
- Use the use case prompt on the use case page.
- 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. - It counts as a success only if it meets every success criterion: self_contained has_canvas_or_svg frames_change balloons_drift sun_rises_over_hills no_console_errors
- 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.
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Automated checks
Trust 80% comes from these checks (how Trust % works).
- Run date is not in the future : passed
- Model is in the dated pricing table : passed
- Cost recomputed from tokens matches : passed
- Cached tokens are consistent : passed
- Output throughput is plausible : passed
- Autonomy matches step-ins : passed
- Step-ins do not exceed turns : passed
- Retries agree with first-try result : passed
- Evidence log SHA-256 matches : passed
- Evidence log is substantial : passed
Evidence log
{"type": "thread.started", "thread_id": "01a16461-8ffa-7dc1-a969-cd90cf79fced"}
{"type": "turn.started"}
{"type": "item.completed", "item": {"id": "item_0", "type": "agent_message", "text": "I\u2019ll read `spec.json` and build the animated scene in `out/scene.html`, with no external dependencies."}}
{"type": "item.started", "item": {"id": "item_1", "type": "command_execution", "command": "/bin/bash -lc 'cat spec.json'", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_1", "type": "command_execution", "command": "/bin/bash -lc 'cat spec.json'", "aggregated_output": "{\n \"title\": \"Balloon Sunrise 883\",\n \"width\": 640,\n \"height\": 400,\n \"file\": \"out/scene.html\",\n \"balloons\": 3,\n \"min_hills\": 3\n}", "exit_code": 0, "status": "completed"}}
{"type": "item.started", "item": {"id": "item_2", "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>Balloon Sunrise 883</title>\n<style>\nhtml,body{margin:0;min-height:100%;background:#202c45}body{display:grid;place-items:center;min-height:100vh}canvas{display:block;width:640px;height:400px}\n</style>\n</head>\n<body>\n<canvas id=\"stage\" width=\"640\" height=\"400\" aria-label=\"Three hot-air balloons drifting over rolling hills at sunrise\"></canvas>\n<script>\n'\"'use strict';\nconst canvas=document.getElementById('stage');\nconst ctx=canvas.getContext('2d');\nconst W=640,H=400;\nconst hills=[\n {x:0,y:303,height:68,color:'#8a8795',phase:0.2},\n {x:0,y:335,height:63,color:'#617b84',phase:2.1},\n {x:0,y:377,height:60,color:'#365e6b',phase:4.2}\n];\nconst initial=[{x:100,y:145,r:26,color:'#dc665e'},{x:300,y:105,r:32,color:'#e9ad55'},{x:500,y:175,r:23,color:'#698db6'}];\nconst start=performance.now();\nlet state;\nfunction update(now){\n const t=Math.max(0,(now-start)/1000);\n state={balloons:initial.map((b,i)=>({x:((b.x+12*t+i*2*t+60)%(W+120))-60,y:b.y+6*Math.sin(t*.55+i)-t*.22,r:b.r,color:b.color})),sun:{x:420,y:290-65*(1-Math.exp(-t/70)),r:35},hills:hills.map(h=>({...h})),time:t};\n}\nwindow.sceneState=()=>({balloons:state.balloons.map(b=>({...b})),sun:{...state.sun},hills:state.hills.map(h=>({...h})),time:state.time});\nfunction drawHill(h){\n ctx.fillStyle=h.color;ctx.beginPath();ctx.moveTo(0,H);\n for(let x=0;x<=W;x+=4){const y=h.y-h.height*(.5+.32*Math.sin(x/125+h.phase)+.18*Math.sin(x/63+h.phase));ctx.lineTo(x,y);}\n ctx.lineTo(W,H);ctx.closePath();ctx.fill();\n}\nfunction drawBalloon(b){\n ctx.save();ctx.translate(b.x,b.y);\n ctx.strokeStyle='#695344';ctx.lineWidth=1.4;\n ctx.beginPath();ctx.moveTo(-b.r*.55,b.r*.6);ctx.lineTo(-7,b.r+17);ctx.moveTo(b.r*.55,b.r*.6);ctx.lineTo(7,b.r+17);ctx.stroke();\n ctx.fillStyle=b.color;ctx.beginPath();ctx.ellipse(0,0,b.r,b.r*1.18,0,0,Math.PI*2);ctx.fill();\n ctx.save();ctx.beginPath();ctx.ellipse(0,0,b.r,b.r*1.18,0,0,Math.PI*2);ctx.clip();\n ctx.fillStyle='#ffffff44';ctx.beginPath();ctx.ellipse(-b.r*.22,-3,b.r*.35,b.r*1.24,0,0,Math.PI*2);ctx.fill();\n ctx.fillStyle='#402b3b22';ctx.beginPath();ctx.ellipse(b.r*.7,0,b.r*.4,b.r*1.3,0,0,Math.PI*2);ctx.fill();ctx.restore();\n ctx.fillStyle='#836045';ctx.fillRect(-8,b.r+14,16,12);ctx.fillStyle='#b58a60';ctx.fillRect(-9,b.r+13,18,3);ctx.restore();\n}\nfunction render(now){\n update(now);\n const sky=ctx.createLinearGradient(0,0,0,H);sky.addColorStop(0,'#8098bc');sky.addColorStop(.55,'#f6b79a');sky.addColorStop(1,'#ffdfa0');ctx.fillStyle=sky;ctx.fillRect(0,0,W,H);\n const s=state.sun;const glow=ctx.createRadialGradient(s.x,s.y,20,s.x,s.y,95);glow.addColorStop(0,'#ffe8ac88');glow.addColorStop(1,'#ffe8ac00');ctx.fillStyle=glow;ctx.fillRect(0,0,W,H);\n ctx.fillStyle='#ffedb6';ctx.beginPath();ctx.arc(s.x,s.y,s.r,0,Math.PI*2);ctx.fill();\n hills.forEach(drawHill);state.balloons.forEach(drawBalloon);\n requestAnimationFrame(render);\n}\nrender(start);\n</script>\n</body>\n</html>\nEOF\nnode -e \\\"const fs=require('fs');const s=fs.readFileSync('out/scene.html','utf8');new Function(s.match(/<script>([\\\\\\\\s\\\\\\\\S]*?)<\\\\\\\\/script>/)[1]); console.log('Script syntax valid; '+Buffer.byteLength(s)+' bytes');\\\"\"", "aggregated_output": "", "exit_code": null, "status": "in_progress"}}
{"type": "item.completed", "item": {"id": "item_2", "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>Balloon Sunrise 883</title>\n<style>\nhtml,body{margin:0;min-height:100%;background:#202c45}body{display:grid;place-items:center;min-height:100vh}canvas{display:block;width:640px;height:400px}\n</style>\n</head>\n<body>\n<canvas id=\"stage\" width=\"640\" height=\"400\" aria-label=\"Three hot-air balloons drifting over rolling hills at sunrise\"></canvas>\n<script>\n'\"'use strict';\nconst canvas=document.getElementById('stage');\nconst ctx=canvas.getContext('2d');\nconst W=640,H=400;\nconst hills=[\n {x:0,y:303,height:68,color:'#8a8795',phase:0.2},\n {x:0,y:335,height:63,color:'#617b84',phase:2.1},\n {x:0,y:377,height:60,color:'#365e6b',phase:4.2}\n];\nconst initial=[{x:100,y:145,r:26,color:'#dc665e'},{x:300,y:105,r:32,color:'#e9ad55'},{x:500,y:175,r:23,color:'#698db6'}];\nconst start=performance.now();\nlet state;\nfunction update(now){\n const t=Math.max(0,(now-start)/1000);\n state={balloons:initial.map((b,i)=>({x:((b.x+12*t+i*2*t+60)%(W+120))-60,y:b.y+6*Math.sin(t*.55+i)-t*.22,r:b.r,color:b.color})),sun:{x:420,y:290-65*(1-Math.exp(-t/70)),r:35},hills:hills.map(h=>({...h})),time:t};\n}\nwindow.sceneState=()=>({balloons:state.balloons.map(b=>({...b})),sun:{...state.sun},hills:state.hills.map(h=>({...h})),time:state.time});\nfunction drawHill(h){\n ctx.fillStyle=h.color;ctx.beginPath();ctx.moveTo(0,H);\n for(let x=0;x<=W;x+=4){const y=h.y-h.height*(.5+.32*Math.sin(x/125+h.phase)+.18*Math.sin(x/63+h.phase));ctx.lineTo(x,y);}\n ctx.lineTo(W,H);ctx.closePath();ctx.fill();\n}\nfunction drawBalloon(b){\n ctx.save();ctx.translate(b.x,b.y);\n ctx.strokeStyle='#695344';ctx.lineWidth=1.4;\n ctx.beginPath();ctx.moveTo(-b.r*.55,b.r*.6);ctx.lineTo(-7,b.r+17);ctx.moveTo(b.r*.55,b.r*.6);ctx.lineTo(7,b.r+17);ctx.stroke();\n ctx.fillStyle=b.color;ctx.beginPath();ctx.ellipse(0,0,b.r,b.r*1.18,0,0,Math.PI*2);ctx.fill();\n ctx.save();ctx.beginPath();ctx.ellipse(0,0,b.r,b.r*1.18,0,0,Math.PI*2);ctx.clip();\n ctx.fillStyle='#ffffff44';ctx.beginPath();ctx.ellipse(-b.r*.22,-3,b.r*.35,b.r*1.24,0,0,Math.PI*2);ctx.fill();\n ctx.fillStyle='#402b3b22';ctx.beginPath();ctx.ellipse(b.r*.7,0,b.r*.4,b.r*1.3,0,0,Math.PI*2);ctx.fill();ctx.restore();\n ctx.fillStyle='#836045';ctx.fillRect(-8,b.r+14,16,12);ctx.fillStyle='#b58a60';ctx.fillRect(-9,b.r+13,18,3);ctx.restore();\n}\nfunction render(now){\n update(now);\n const sky=ctx.createLinearGradient(0,0,0,H);sky.addColorStop(0,'#8098bc');sky.addColorStop(.55,'#f6b79a');sky.addColorStop(1,'#ffdfa0');ctx.fillStyle=sky;ctx.fillRect(0,0,W,H);\n const s=state.sun;const glow=ctx.createRadialGradient(s.x,s.y,20,s.x,s.y,95);glow.addColorStop(0,'#ffe8ac88');glow.addColorStop(1,'#ffe8ac00');ctx.fillStyle=glow;ctx.fillRect(0,0,W,H);\n ctx.fillStyle='#ffedb6';ctx.beginPath();ctx.arc(s.x,s.y,s.r,0,Math.PI*2);ctx.fill();\n hills.forEach(drawHill);state.balloons.forEach(drawBalloon);\n requestAnimationFrame(render);\n}\nrender(start);\n</script>\n</body>\n</html>\nEOF\nnode -e \\\"const fs=require('fs');const s=fs.readFileSync('out/scene.html','utf8');new Function(s.match(/<script>([\\\\\\\\s\\\\\\\\S]*?)<\\\\\\\\/script>/)[1]); console.log('Script syntax valid; '+Buffer.byteLength(s)+' bytes');\\\"\"", "aggregated_output": "Script syntax valid; 2992 bytes\n", "exit_code": 0, "status": "completed"}}
{"type": "item.completed", "item": {"id": "item_3", "type": "agent_message", "text": "Created [out/scene.html](out/scene.html) with three drifting balloons, three hills, a continuously rising sun, and `window.sceneState()`.\n\nSelf-contained; JavaScript syntax verified."}}
{"type": "turn.completed", "usage": {"input_tokens": 49249, "cached_input_tokens": 45184, "cache_write_input_tokens": 0, "output_tokens": 1342, "reasoning_output_tokens": 0}}