Claude Fable 5.2 and Mythos 5.2
948 comments
- Points717
- Comments880
948 comments
Story details from Hacker News ↗ · linked article on anthropic.com.
Claude Fable 5.2 and Mythos 5.2 was first seen on Hacker News · Front page on Nov 10, 2026. Since then it has appeared in 61 checks on 1 different day. Its best position was #2 of 30, reached on Nov 10, 10:54 UTC. It is #2 right now, holding steady at #2 over the last 6 checks.
Position on Hacker News · Front page at every check (lower is better).
Best rank per day (UTC).
points as reported by Hacker News.
A few top-level comments from Hacker News, shortened. Read the full thread on Hacker News.
> As an experiment, one Anthropic engineer gave Fable 5.2 the task of designing a prototype operating system. Starting from an empty folder, the model coordinated over 1,000 subagents, working around the clock for eight days writing, testing, and reviewing code. It produced a working operating system that boots on a…
I’ve had a chance to use fable 5.2. Some observations: - Anthropic is finally well balanced across models. Meaning: Opus 5.5 is so good that I do not feel Fable FOMO as I did when it was Fable 5/5.1 vs Opus 4.8/5. And Sonnet 5.5 sometimes makes me forget about Opus. - Fable is good, but you really have to push the…
"During prerelease testing they’ve [the models] helped our engineers complete otherwise-infeasible software migrations, designed three working electronic devices from scratch, solved two open problems in the physics of black holes, made substantial progress on robotics evaluations, and formalized the proof of…
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Yes. As of Nov 10, 17:24 UTC it is #2, holding steady at #2 over the last 6 checks.
#2 on Hacker News · Front page, on Nov 10, 10:54 UTC. Trendoday checks this list every 15 minutes.
It was first seen on Nov 10, 2026 and has been on the list on 1 day (61 checks) since.
717 points and 880 comments; submitted by lairv on Nov 9, 2026.