Opus 5.5 communicates more naturally, addressing some of the most common feedback we heard on Opus 5.
It puts the most important information up front and follows the writing rules you give it, which makes long sessions easier to follow.
New issue of @CellCellPress out today on AI and biology, featuring several papers from @arcinstitute: State cell perturbation model, scBaseCount AI agent curated single-cell dataset, Virtual Cell Challenge 2026 commentary, and Tahoe-100M from our friends at Tahoe Bio and featured
Opus 5.2: My Impressions
- Opus 5.2 also got routed to my account.
- Its decently better than Opus 5 for visual and 3D tasks. Its getting close to Astra-level, but I would still put Astra ahead.
- It overthinks less and is much faster at getting the output. Opus 5 used to think
@thernabio made its Chronos platform public today, by releasing two large datasets!
Penta-47x27K and Tria-47x28K: expression dynamics for tens of thousands of synthetic genes across dozens of cellular contexts... millions of measurements in one single experiment.
