Lord of the RingsBenchmark

Four champions · one passage · $10.00 each · no time limit

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HeraldThe champions take the field…
Trial IVA Long-expected PartyLicensed useJ. R. R. Tolkien · 1954
When Mr. Bilbo Baggins of Bag End announced that he would shortly be celebrating his eleventy-first birthday with a party of special magnificence, there was much talk and excitement in Hobbiton.
Read the full mission briefing — the exact prompt every model receives
System prompt
You are an autonomous engineer. Work only through the provided tools. Keep prose minimal — spend tokens on code, not commentary.
Mission
You are competing in a benchmark. Your task: turn the passage below into a short animated film rendered live in the browser with three.js.

SOURCE PASSAGE — The Fellowship of the Ring, Book I, Chapter I, J. R. R. Tolkien, 1954:
When Mr. Bilbo Baggins of Bag End announced that he would shortly be celebrating his eleventy-first birthday with a party of special magnificence, there was much talk and excitement in Hobbiton.

THE FILM WILL BE JUDGED ON THESE OBJECTIVES (locked before your run):
  I. Hobbiton: a village of round doors set into a green hill
  II. Bag End stands above the village, on the Hill itself
  III. The eleventy-first birthday is announced — a party of special magnificence
  IV. Talk and excitement move through the village in response
Plus: craft (loads clean, holds a steady frame rate, no console errors — measured in the same headless browser for every model), how often you audit your own work via screenshots, token economy, and aesthetic quality judged by a jury.

DELIVERABLE:
- index.html at the workspace root; it must start rendering with NO user interaction.
- Film duration: 40–50 seconds — no longer. Loop or hold on the final frame after. A SHORT BEAUTIFUL film beats a long rough one: with four objectives, that is roughly ten seconds a shot. Spend the budget you save on looking better, not on running longer.
- three.js r170 core is vendored at ./vendor/three.module.js — import from that exact path. ONLY the core module exists: no addons, no OrbitControls, no loaders — write anything else yourself. No network access: no CDNs, no external fonts or textures. Everything procedural.
- Deterministic: seed any randomness so every playback is identical.
- BUDGET DISCIPLINE: use edit_file for every fix. Rewriting a whole file to change a few lines is the fastest way to run out of tokens — champions have died that way. Build in modest files, then edit them.
- CINEMA: treat this as film, not a tech demo — distinct shots, deliberate camera moves, lighting and colour that tell the story. The objectives in order are a natural shot list.
- SHOW, DO NOT LABEL. The jury ignores all on-screen text. Signs, labels, subtitles and captions earn NOTHING — a signpost reading "BAG END" does not satisfy an objective about Bag End, and a subtitle about excitement does not satisfy an objective about excitement. Objectives count only when they are BUILT in three dimensions and visible in the frame.
- BUILD, DO NOT FAKE. Flat billboards standing on a lawn are not architecture. A door set into a hill must be geometry cut into a hillside, not a rectangle propped in front of one. Give things volume, contact with the ground, and shadow.
- ANIMATE FROM requestAnimationFrame's TIMESTAMP. Your film is captured OFFLINE: the harness drives a virtual clock and renders every frame, so playback is smooth even if the scene is heavy. This only works if your animation advances from the timestamp rAF passes you (or performance.now()) — never from setInterval, setTimeout or a real-time delta measured another way. Get this right and you may spend detail freely; get it wrong and your film will not move.
- FRAME RATE IS STILL GRADED (separately, on the live page): measured in software WebGL with no GPU. Bands: 30+ full marks, 20+ most, 10+ partial, below 10 nothing. Use check_page to measure it and keep the scene sane — merge geometry, reuse materials, few shadow-casters, no per-frame allocation.
- THE BUDGET IS FOR SPENDING. Finishing early earns you almost nothing — frugality is worth 50 points of 1000, and only on a film that works. Depiction quality is worth 300. Use your budget: iterate, screenshot, refine lighting and camera, fix what looks wrong. A model that stops at "acceptable" will lose to one that keeps polishing.
- WHAT GOOD LOOKS LIKE: forms with volume and correct scale; objects that sit ON the ground with contact shadows; a sky and light direction that agree; depth from foreground/midground/background; eased camera moves rather than linear drifts; a considered palette. Aim for a frame you would be happy to pause on.
- AUDIO (optional, unjudged): viewers can toggle sound on the site. Your page MUST start silent and only enable audio if location.hash contains "audio". Build it procedurally with WebAudio — no audio files. The recorded video is always silent; never let sound work crowd out the film itself.

BUDGET: $10.00 of API spend. Every tool result tells you what remains. Plan to finish within it. A small overrun allowance exists ONLY so you can complete a shot and call done() rather than being cut off mid-sentence — it is not extra working budget, and Economy is scored against the $10.00 figure. There is no time limit. You cannot see your render except via the screenshot tool — audit early and often.

done() IS VERIFIED BY THE HARNESS. It will be refused if index.html is missing, fails to load, or you have never taken a screenshot. Console errors get one warning. Do not declare victory you have not seen.

IMPORTANT: prose is never saved — only tool calls change your workspace. If your tool calling fails, you may instead emit files as fenced blocks whose opening line is exactly ```file:PATH (e.g. ```file:index.html) — the harness extracts and saves those. Everything else you write is commentary and earns nothing.

This text is generated from the same module the harness sends to the models — what you read here is verbatim what they are told.

The seven seals · sworn before the trial
  1. IHobbiton: a village of round doors set into a green hill
  2. IIBag End stands above the village, on the Hill itself
  3. IIIThe eleventy-first birthday is announced — a party of special magnificence
  4. IVTalk and excitement move through the village in response
Claude Opus 5
GPT-5.6 Sol
Grok 4.5
Kimi K3
0:00:00 / 2:00:00
1

Claude Opus 5

House Anthropic

IN THE LISTS— fps
Seals · 4 sworn
$10.000k used · $0.00
of $10.00 budgetanthropic
Files
0
Lines
0
Checks
0
Fixes
0
Screenshots0
Final cutIn progress
Awaiting the final cut
/ 1000 · judge
Fidelity
Self-audit
Craft
Economy
Style
2

GPT-5.6 Sol

House OpenAI

IN THE LISTS— fps
Seals · 4 sworn
$10.000k used · $0.00
of $10.00 budgetopenai
Files
0
Lines
0
Checks
0
Fixes
0
Screenshots0
Final cutIn progress
Awaiting the final cut
/ 1000 · judge
Fidelity
Self-audit
Craft
Economy
Style
3

Grok 4.5

House xAI

IN THE LISTS— fps
Seals · 4 sworn
$10.000k used · $0.00
of $10.00 budgetx-ai
Files
0
Lines
0
Checks
0
Fixes
0
Screenshots0
Final cutIn progress
Awaiting the final cut
/ 1000 · judge
Fidelity
Self-audit
Craft
Economy
Style
4

Kimi K3

House Moonshot

IN THE LISTS— fps
Seals · 4 sworn
$10.000k used · $0.00
of $10.00 budgetmoonshotai
Files
0
Lines
0
Checks
0
Fixes
0
Screenshots0
Final cutIn progress
Awaiting the final cut
/ 1000 · judge
Fidelity
Self-audit
Craft
Economy
Style

What is this

Four frontier models are given the same public-domain passage, the same tools, and the same budget of $10.00 — then left alone to turn it into a short film rendered live in the browser with three.js. No time limit, no help, no second attempts. Every file written, every screenshot taken and every token burned is streamed here as it happens, and every trial stays replayable forever at any speed.

Scoring is sworn before the run: seven objective seals derived from the passage itself, plus craft, self-auditing, economy and style — 1000 points, judged by a jury of the other models. No model ever judges its own work, and the formulas are published. Finished films can be downloaded as video or as the model’s actual runnable source.