AI-generated illustration
Web UI / Coding
Improving load times across a web app
An Anthropic-reported web-app task evaluates performance improvements alongside behavior preservation.
Anthropic · Source reviewed · not reproduced
Anthropic / Model guide
Claude Opus 5.5 Coding Examples
Explore what was built, inspect the source and understand what has actually been verified.
AI-generated illustration
Agents / Coding
Clio’s six-repository agent workflow
Clio reports a long-running Opus 5.5 task spanning six repositories in Anthropic’s launch material.
Clio, via Anthropic · Source reviewed · not reproduced
AI-generated illustration
Coding / Agents
HAProxy C-to-Rust migration report
Anthropic reports a long-running language migration evaluated against an existing regression suite.
Anthropic · Source reviewed · not reproduced
AI-generated illustration
Coding / Agents
Auditing a 200K-line codebase
An Anthropic-reported codebase audit illustrates a long, multi-step coding workload for Opus 5.5.
Anthropic · Source reviewed · not reproduced
AI-generated illustration
Games / Coding / 3D
Dead Signal: a source-available survival FPS
A Three.js, TypeScript and Vite survival game attributed to Opus 5.5, with a public repository and tests.
bridge-mind · Source reviewed · not reproduced
Games / 3D / Coding
QQ Speed-inspired 3D racing demo
Inspect a creator-reported Opus 5.5 racing build through its public code, demo and original Chinese prompt.
riba2534 · Source reviewed · not reproduced
Games / 3D / Coding
Transport Ship: a browser FPS map
A creator-published shooter demo with its prompt, source and generation notes in the Opus 5.5 demo repository.
riba2534 · Source reviewed · not reproduced
Games / 3D / Coding
Pelican Bike: a browser 3D cycling scene
A source-linked Three.js cycling project with a public prompt, code and demo from riba2534.
riba2534 · Source reviewed · not reproduced
How to read the evidence
Official reports, creator repositories and curated social sources are labeled separately. “Source reviewed” means we inspected the linked material; it does not certify that the result is reproducible. One-shot claims remain attributed to the creator. Every case links to its evidence and limitations.