A Claude Opus 5.5 case · #8
A 3D lens lab from a one-shot prompt in 1 hour 26 minutes for $25.66
@RyanSael · X ·
In one pass, it turned optics that are hard to follow in text into a teaching tool you learn by turning it with your hands.
Cases8 cases
8 must-see cases
- #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
- #4A 2,874-part block model manual from just a photo or description
- #5The exact second of the 1968 Earthrise photo, found from one image
- #6A whole San Francisco street before the 1906 quake, in one shot
- #7One prompt, three AIs, and a horror short in about 2 hours 30 minutes
- #8A 3D lens lab from a one-shot prompt in 1 hour 26 minutes for $25.66
#1 · 8 must-see cases
A 9.5-hour Rust port of HAProxy passing nearly all its tests
Boris Cherny · AnthropicX
Likes7,230Views461.3K
It moved HAProxy, the open-source tool that distributes requests in front of web services, from C to Rust in full. It passed nearly all of HAProxy's own tests in 9.5 hours, while Fable 5.1 took 12 hours on the same job.
It finished a migration that would take a human team weeks faster than a more expensive model, at 51% lower cost.
#2 · 8 must-see cases
A new algorithm beyond a paper's limit, found and proved in 15 hours
Vals AI · AI model evaluation companyX
Likes3,210Views1.1M
Ten Opus 5.5 agents (AI that carries on through multiple steps on its own) devised C-HD, a faster shortest-path algorithm. They completed the proof in Lean, a language in which a computer checks every line, and the whole effort took 15 hours.
It produced a new result that goes beyond a limit stated in a paper, with a machine-verified proof attached.
#3 · 8 must-see cases
An Antikythera game in one HTML file with no images or audio
edwin (@edwinarbus)X
Likes2,803Views222.5K
A game that follows the discovery of the Antikythera mechanism, the ancient Greek astronomical calculator called the first computer. All visuals and sound are generated by code in real time.
A full game fits in a single 3MB HTML file, with no image files and no audio files.
#4 · 8 must-see cases
A 2,874-part block model manual from just a photo or description
Anthropic officialX
Likes305Views23.9K
An app that turns a photo or description into a buildable block model with step-by-step instructions. A 2,874-part model came out as 487 steps in a 498-page manual.
Of the 15,880 places where parts connect, not one was flagged as a problem, so the manual actually builds.
#5 · 8 must-see cases
The exact second of the 1968 Earthrise photo, found from one image
Anthropic officialX
Likes794Views84.9K
It recalculated in 3D the moment Apollo 8 photographed Earth rising from lunar orbit, using only clues in the photo and public data. After matching 2,781 points, it pinned the shot to about 69 miles above the Moon at 16:39:39 UTC on December 24, 1968.
It solved the clues left in a single photo with orbital calculations and found where and when it was taken.
#6 · 8 must-see cases
A whole San Francisco street before the 1906 quake, in one shot
Alex Albert · AnthropicX
Likes1,000Views99.2K
From a single prompt, it recreated San Francisco's Market Street just before the great 1906 earthquake in Blender.
It goes beyond a single building and builds a whole street that is accurate to the period.
#7 · 8 must-see cases
One prompt, three AIs, and a horror short in about 2 hours 30 minutes
r/ClaudeAIReddit
Points8Comments2
Opus 5.5 led the entire production and handed images (Midjourney), music (Suno), and Cantonese dialogue and sound effects (ElevenLabs) to other AIs to finish a horror short. It took about 2 hours 30 minutes from prompt to finished film.
It can even take the director's role, managing several AI tools.
#8 · 8 must-see cases
A 3D lens lab from a one-shot prompt in 1 hour 26 minutes for $25.66
@RyanSaelX
Likes4,484Views188.1K
From a single request to explain how camera focus works, it worked for 1 hour 26 minutes and built a hands-on 3D lens lab web page. Turning the focus ring moves the glass elements inside the lens and shifts the plane in sharp focus forward and back through the scene. The API (the way programs call the model) cost $25.66.
In one pass, it turned optics that are hard to follow in text into a teaching tool you learn by turning it with your hands.