Since Claude Opus 5.5 launched-d --:--:--

Here are 108 things people built with Claude Opus 5.5 after its release. They finished a weeks-long code migration in 9.5 hours, proved a new algorithm in 15 hours, and made 3D scenes, games and videos from a single chat.

108 cases · as of 2026-09-24

Cases by field

8 must-see cases

Eight picks chosen by weighing the size of the result, how hard it was to make, how it looks at a glance, and how little input it took.

Hours-long jobs finished alone

Records of handing off, start to finish, work that would take a person hours or days.

3D, Blender and simulation

3D scenes and physics simulations made with Blender, Three.js and Unreal.

Games

Games made from one or two prompts. Time taken and cost are listed too.

Video, animation and art made with code

Video, animation and art made with code alone, without image files.

Apps, design and web

App screens, landing pages, and design comparisons on the same task.

Reference

Launch at a glance

Release date, pricing, speed and default settings in one table.

Results backed by numbers

External evaluations, Anthropic announcements and partner company measurements, kept separate.

Cases from Korea and Japan

Records of things Korean and Japanese users built and tested themselves.

Objections and limits

Cases where the top setting failed, where costs jumped sharply, and where a competing model did better.

108KO

Popular right now

Picked hourly from visitors' likes, saves and shares plus the original posts' reactions; newer cases get a small boost.

#94A Teemo intro from a one-shot prompt with official Riot stats it found

#8A 3D lens lab from a one-shot prompt in 1 hour 26 minutes for $25.66

#66A hand-drawn style space animation of swirling planets and orbits

#67A paper-plane letter story with every frame drawn in JavaScript

#41Browser Minecraft with sunset light reflected on the waves

#68No video model, only code brushstrokes: the life of Opus 5.5

With one sentence per game, Opus 5.5 in Claude Code made a game about a pelican riding a bicycle, a first-person shooter (FPS) that recreates CrossFire's transport ship map, and a QQ Speed-style racing game. The model did everything alone in one conversation, from research to writing code, testing and deploying to Cloudflare Pages, and no human changed a single line of code.

#42Three 3D web games from one sentence each, deployed untouched

#26A pelican cycling in a Three.js city, built to celebrate the launch

#70A short film built from scratch by 4 agents in 1 hour 30 minutes

#71One prompt, 4% of the weekly limit: a 1-minute office horror video

#27A Minecraft-style block world with realistic light and clouds

#72No image files, only code: a self-portrait facing hard problems

#73Travel photos in JavaScript alone: an acrylic New Zealand picture book

#74An oil-painted seaside animation with every frame drawn in JavaScript

#75A Shotbase launch video from one shot in under 20 minutes

#76A raindrop story video it made when asked about its new abilities

#43Minecraft that runs right in the browser with no install

#77A hand-drawn history of Claude from one skill and plain JavaScript

#44A gacha game where you pull barbecue grills instead of girlfriends

#79In under 5 minutes, a pixel animation of a rainbow road in space

#80Theme left to the model: a 70-second JavaScript video of birds at dusk

#45A from-scratch Spider-Man-style game, from 3D models to animation

#81A pixel art animation of a neural network learning handwritten digits

#82A hand-drawn-style music video Opus 5.5 made to fit a song

#83A full video about making a voice app, from a one-shot prompt

#28Same prompt as GPT-6 Sol, side by side: a 3D planet base scene

#46A Minecraft clone with water physics, playable right in the chat

#84A claymation of the motor protein kinesin from a single prompt

#47A 3D dogsled race under the aurora, set beside GPT-6 Sol's version

#48A doodle first-person shooter with a boss fight from a one-shot prompt

#85A short film test scene from 46,000 characters of code, no video model

#86An Opus 5.5 launch video in JS code alone, with no music or images

#87A running pixel horse drawn in code in one HTML file, no image files

#88An SVG New York skyline in one HTML file from a one-shot prompt

#104The coding agent app T3 Code, moved whole into Minecraft

#49A no-install NBA 2K-style 3D basketball game in the browser

#105A living sketchbook that draws what you type and moves by keyboard

#106A map of the Mongol conquests, 1206 to 1294, from a one-shot prompt

#89A cartoon video editor animation drawn only in code, no video AI

#107One-click blog explainers with source citations for each arXiv paper

#50A pressure washer game in Rust and WebGPU that also runs on phones

#29A 3D monster rigged with jump and bite moves in 40 minutes

#51A pixel game map animated down to fountain ripples and cave bat eyes

#52A Fortnite-style battle royale game from a one-shot prompt

#90An animated history of GPT models in plain JavaScript alone

#91A one-shot, code-only animation of Claude solving a hard problem

#92A 22-second chalkboard animation with music the model made itself

#93A sand art animation with voice and sound effects from one prompt

#53Platformer and rhythm games vs. GPT-6 Sol from the same one-page brief

#54A Pune auto-rickshaw 3D game from a single prompt, no code (India)

#108A macOS music app in about 35 minutes and a 63-minute iOS word list

#1A 9.5-hour Rust port of HAProxy passing nearly all its tests

#2A new algorithm beyond a paper's limit, found and proved in 15 hours

#3An Antikythera game in one HTML file with no images or audio

#6A whole San Francisco street before the 1906 quake, in one shot

#5The exact second of the 1968 Earthrise photo, found from one image

#4A 2,874-part block model manual from just a photo or description

#7One prompt, three AIs, and a horror short in about 2 hours 30 minutes

#56The code-only animated story Anthropic showcased first

#58A printmaking-style train journey drawn only in JavaScript, no images

#916 code fixes that caught a concurrency bug from a few short requests

#55Old-master-style paintings from 7,500 lines of code, no image AI

#103The best visual design of any model tried

#62An investment app promo video made start to finish in 10 minutes

#95100 HTML pages from three rules, with zero broken files

#69An SVG animation of two AI logos facing off, from a one-shot prompt

#31A Roblox brawler from a one-shot prompt, using only built-in tools

#30A multiplayer lawnmower game viewers joined as soon as it was built

#65A site that turns any photo into a one-line drawing and drawing video

#13A Blender claymation from a one-shot prompt

#32A Dark Souls-style action game built in Unreal Engine

#17San Francisco in Unreal Engine, down to moving people, pets and cars

#60A living pixel art wizard made only with code, no image files

#23A moving 3D 'pelican on a bicycle' in 19 minutes 16 seconds

#39An explorable tiny planet made in 14 minutes for $2.54 in API fees

#14A Shinkansen with 5,112 parts and 430 seats, each built separately

#63A single prompt, 12% of the usage limit: Opus 5.5's own launch video

#18A 3D code animation that grows from one line into a finished house

#78A one-song music video drawn in code, with no scene directions

#57An animation made in 18 minutes 31 seconds from a one-shot prompt

#102A PS5 controller a step above GPT-6 Sol on the same prompt

#98A one-shot 28-minute redesign of an app earning $10K a month

#96The Claude Code screen redesigned as a napkin written in pen

#59A short film with story, art and music by the model and no human code

#97An app design stuck for a week on another model, solved in hours

#22A self-portrait of Opus 5.5 built from voxel blocks

#33300+ playable guitars in a shop that turns into a brawler when loud

#99A landing page with motion, built in minutes from one reference site

#20A hand-drawn catapult that fixed itself after a miss and hit 7 of 10

#64Change one number, get a new picture every time: a drawing program

#15A walkable 3D house from one photo and a floor plan

#25A 334-line SVG Xbox controller from a one-shot prompt

#21A $3.40 volcanic island with sea life, a mammoth and an aurora

#11A single prompt, about 1 hour 30 minutes alone: a city-building game

#1050 agents for 2 hours 27 minutes on just 18% of the usage limit

#34An endless 3D world from one instruction, with self-set goals

#16A 3D anatomical hand that shows pain causes when you point by webcam

#19A one-shot cat with every strand of fur moving on the GPU

#100Gyeongbokgung simulators built by three models, compared (Korea)

#40Geometry Wars from a request for just 'a fun game'

#35A Mario Kart-style racer built by 5 agents from a single prompt

#24A pachinko machine from a single image (Japan)

#61A one-shot Replit launch video made in under 15 minutes

A DOOM clone that runs in the browser, built together with an autoplay AI that beats the game on its own. The autoplay won 8 of 8 games with an average hit rate of 93.4%.

#36A DOOM clone with a self-playing AI that won 8 of 8 games

#38A Pokémon opening from an unpolished one-line prompt and $5.47

#12Half the prior model's cost, 63 minutes: a merger analysis in Excel

Opus 5.5, Fable 5.1 and GPT-6 Astra were each asked to build a flight simulator, a Minecraft-style voxel game and a real-time strategy game in a single attempt, and the results were posted side by side. For Opus 5.5, each game took 46 to 48 minutes and cost $11 to $14.

#373 games in one try each, from a flight simulator to a strategy game

A web service for managing shipping risk was built from 2 prompts in 18 minutes 16 seconds. The files the model wrote were deployed as they were, without a single line changed.

#1012 prompts, 18 minutes 16 seconds: an untouched shipping service