JuliaHub Blog company blog

GPT-5.6 vs. Claude Fable 5 for Physical AI, which performs best?

juliahub.com published 2026-07-20

We tested the latest frontier models in the Dyad agent on five modeling and simulation problems, comparing accuracy, cost, time, and work style.

Points

101

HN comments

21

Submissions

1

Cited by

0 commenters

AI & Machine Learning2026

Related posts from the same era

Statement on US government directive to suspend access to Fable 5 and Mythos 5

Anthropic20263,158 points2,314 commentscited by 11 details

Astra can read and write weights to improve Qwen

RRikiya Takehi20262,949 points892 comments details

HackerTube: YouTube built from videos recommended by HN

karpathy20262,882 points640 comments details

Claude Fable 5

Anthropic20262,626 points2,159 commentscited by 10 details

Claude Code is steganographically marking requests

Thereallo20262,445 points750 commentscited by 3 details

My AI skeptic friends are all nuts

Fly.io Blog20252,356 points2,826 commentscited by 13 details