This is a super exciting release - Claude Fable 5 is the same underlying model as Mythos but with added safeguards. The benchmarks are great and it's SOTA on everything by a margin but I'll add that *qualitatively* also, this is a major-version-bump-deserving step change forward (imo of the same order as Claude 4.5 was in November), peaking especially for long problem-solving sessions on very difficult problems. You can give it a lot more ambitious tasks than what you're used to, the model "gets it" and it will just go, and it's never felt this tempting to stop looking at the code at all (but don't do this in prod!). The model still has quirks that people will run into and the safeguards are configured to be a little too trigger happy for launch, which can hopefully be tuned over time.
I feel a lot of things changing as working software increasingly comes out on a tap. The Jevon's paradox kicks in and I feel my own demand for software growing substantially. You can ask for anything - explainers, visualizers, dashboards, bespoke single-use apps (e.g. a full wandb that is hyper-specific just for your project), you can 10X your test suite, auto-optimize code, run giant research projects with custom HTML for the results, anything! "Free your mind" (Matrix ref). Really looking forward to all the things people build!
updated macOS -> downloaded xCode (recent one, previous didnโt work as my macOs didnโt support it) -> downloaded updated emulator
And its working ๐ฅณ
Best part - it even works wirelessly, without any additional config change!
Stuck on testing the mobile app on a physical iPhone device. ๐ซค
Would appreciate it if anyone else has hit this and found a fix.
P.S. I've already tried StackOverflow/Gemini/chatgpt answers, those didn't help :)
https://t.co/PCYXyDpp1N
https://t.co/67nDaTkBVG
FastAPI 0.133.1 comes with the official FastAPI Agent Skill bundled ๐ฆ๏ธ
More important than the current skill content is that it will be kept up to date with new versions of FastAPI ๐
AI coding agents will be able to use best practices and new features as they come ๐ค
I built the first AI that earns its existence, self-improves, and replicates without a human
wrote about the technology that finally gives AI write access to the world, The Automaton, and the new web for exponential sovereign AIs
WEB 4.0: The birth of superintelligent life
The latest Deep Think moves beyond abstract theory to drive practical applications.
Itโs state-of-the-art on ARC-AGI-2, a benchmark for frontier AI reasoning.
On Humanityโs Last Exam, it sets a new standard, tackling the hardest problems across mathematics, science, and engineering โ making it a genuine collaborator for heavy-duty analysis.
It achieved an Elo of 3455 on Codeforces, demonstrating the ability to solve complex, real-world coding tasks - while earning gold medal-level results on the written portion of the 2025 Physics and Chemistry Olympiads.