GoldieBench deep dive
Fusion's full benchmark breakdown.
Multi-model panel — Fable 5 + GPT-5.5, ensembled. Beats Fable 5 at half the price. Every number below is either one of my own judged one-shot builds - playable on this site - or an outside result with its source linked. Nothing display-only, nothing vibes.
01 · The headline numbers
02 · Every benchmark, bar by bar
All 47 scored tasks, best first. Hover for the judge's comment; click through for every model's build on that task. Or overlay other models in the interactive graphs.
03 · Where it wins - with the judge's own words
“RETRY @ 24K tokens — now complete: 29KB with rAF + 7 input handlers + closed tags. Torch-lit ancient ruin, PointerLockControls, bloom, chasing enemies, boss room. The original truncated attempt has been replaced with a working build.”
“RETRY @ 24K tokens — now complete: 44KB three.js + WebGL using renderer.setAnimationLoop (three.js native loop), 6 input handlers, full update() per-frame: player + NPCs + enemies + weather + day/night + HUD. Densest build on the bench.”
“Photon back-tracing through a curved-space metric (claims as much in the code) for actual gravitational lensing — disk's far side lifted over and under the shadow. Loading screen says "computing space-time metric…" Range-slider parameter panel for spin/disk tilt/exposure. Most ambitious blackhole attempt by code structure.”
“First-person Nordic dungeon on three.js with PointerLockControls + WebGL. Torch-lit corridors, held torch, skeletons to strike, health + gold HUD. The crypt Julian wanted.”
“RETRY @ 24K tokens — now complete: 36KB three.js + WebGL with 2 rAFs, 6 input handlers, full </html>. Fighter, enemies, missiles, guns, sky + ground, full HUD. The original truncated 32KB attempt has been replaced with a working build.”
04 · Where it struggles - quoted, not hidden
Boards that hide the weak rows are brochures. These are Fusion's lowest scored builds, verdicts unedited:
“WebGL metaball shader with warm gradient. Smooth blob morphing, low-frequency motion. Simpler than the deep builds but on brief.”
“Aurora ribbons over a mountain ridge silhouette, WebGL noise shader. Slow morphing curtains in cyan + magenta. Smaller scope (10KB) but the prompt is met.”
“120KB · auto-plays clean (video ad, input n/a) · css timeline”
05 · Category breakdown vs the whole field
Games (23 tasks)
Others (0 tasks)
Pages (3 tasks)
Sims (12 tasks)
Visuals (9 tasks)
06 · Outside signals - every row sourced
My bench measures one thing: judged one-shot builds. These outside rows measure other things - kept separate, never blended into the GoldieBench average, every value linked to where it comes from.
From the source guides
| Measure | Result | Source guide |
|---|---|---|
| DRACO deep-research (premium panel) | 69.0% | /fusion-api |
| DRACO deep-research (budget panel) | 64.7% | /fusion-api |
| vs solo Fable 5 | +3.7 pts | /fusion-api |
07 · Head-to-head records
08 · Methodology + honest limits
Every GoldieBench score is a one-shot, single-file build from an identical prompt - no retries, no hand-fixing - rendered for real, screenshotted, and scored 0-10 by one judge model on one rubric across the whole field. Failures score as failures. What this bench does NOT measure: multi-turn agent work, long-context recall, or API latency - that is what the sourced outside rows are for. Full method: /methodology.
Frequently asked questions
01How does Fusion perform on GoldieBench?
Fusion averages 8.59/10 across 47 scored one-shot build tasks, ranking #1 of 17 ranked frontier models, with 22 task golds, 4 silvers and 8 bronzes. Every score is a real judged build you can open and play on this site.
02What is Fusion best at?
Its strongest scored build is Nordiccrypt at 9.5/10. By category it averages Game 8.8, Page 8.5, Sim 8.5, Visual 8.2 on the bench.
03How much does Fusion cost?
OpenRouter's Fusion API dispatches a single prompt to multiple frontier models and ensembles the answers. Premium panel: Fable 5 + GPT-5.5. Budget panel: cheaper open-weights models. Roughly half the per-token cost of a Fable 5 solo call.
Source ledger
- 01Official vendor site: openrouter.ai/openrouter/fusionopenrouter.ai
- 02DRACO deep-research (premium panel)agentos.guide
Every model's breakdown
Run this stack yourself.
Every demo on this bench was built inside the Agent Operating System — one prompt, one shot, single HTML file out. The Agent OS, the prompts, the templates, the weekly walkthroughs and 4,000+ founders shipping with it every day all live inside the AI Profit Boardroom.