Ok it might finally be time for Fable 5.5
Anthropic has officially filed an S-1 for its IPO
Made with @claudeai Opus 5.5
Anthropic has filed an S-1 registration statement with the SEC related to its proposed IPO.
Read more: anthropic.com/news/s1-sec
Legal disclaimer: A registration statement relating to these securities has been filed with the SEC but has not yet become effective. These securities may not be sold, nor may offers to buy be accepted, prior to the time the registration statement becomes effective. This post does not constitute an offer to sell or the solicitation of an offer to buy these securities, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.
POV: you're a Haiku agent on Opus's film set
Made with @claudeai Opus 5.5
Grok Bot keeps telling me I'm out of usage for the week? @X @XDevelopers could you guys take a looks please :D
I gave every letter of my handle its own little animation
All drawn in code, with sound
Would love to see yours too!
Made with @claudeai Sonnet 5.5
I asked @claudeai Opus 5.5 to build the iPhone Duo in three.js.
Every feature is within 0.08 mm of Apple's own AR model.
It folds, unlocks, and runs a working OS.
Safari loads any real website.
Then it shot the film
Every breakthrough, in order:
1. Perceptron learns (1958)
2. Backprop, error flows back (1986)
3. LeNet reads a digit (1989)
4. Deep Blue beats Kasparov (1997)
5. AlexNet's 96 filters (2012)
6. DQN tunnels through Breakout (2015)
7. AlphaGo's Move 37 (2016)
8. Attention Is All You Need (2017)
9. GPT scales to 96 layers (2018–20)
10. AlphaFold 2 folds a protein (2020)
11. Reinforcement Learning (2024–)
Very excited to try out Claude Duet!
Made with @claudeai Opus 5.5
A visualization on how @OpenAI solved a Millennium Prize Problem
We’re sharing a solution to the Navier-Stokes Millennium Prize Problem, one of the deepest problems at the frontier of mathematics.
The proof was produced by a group of agents, using an OpenAI next-generation model significantly more capable than GPT-6 Astra.
The problem concerns whether the description of smooth three-dimensional fluid motion modeled by the Navier-Stokes equations can break down. It has remained unresolved for roughly 90 years.
This is how @AnthropicAI used Mythos 5 to improve quantum circuit efficiency
Made with @claudeai Opus 5.5
New from our STEM Fellows Program: Designing more efficient quantum circuits with Claude.
Given plain-language instructions, Claude Mythos 5 designed quantum circuits that improve on the best published ones, sometimes by an order of magnitude or more.
More efficient circuits reduce the resources needed by quantum algorithms, which could bring quantum computing applications in chemistry and materials science within reach sooner.
Read more: anthropic.com/research/desig…
A day the workshop with Claude
Made with @claudeai Opus 5.5 + Sonnet 5.5
A visualization on how @AnthropicAI's new Scion source control works
Made with @claudeai Opus 5.5
New on our Engineering blog: Creating in-house source control.
In May, we merged around 2,500 code changes per day. In September, we merged more than 30,000 per day. As a result, we became bottlenecked by developer infrastructure built for human (rather than agent) scale.
Here, we share how we built a new version control system—and fully migrated our monorepo from git—in five months: anthropic.com/engineering/re…
Has @claudeai just achieved Recursive Self Improvement?









