How Arc Institute launched Pythia on X
14K views, ranked 1869 of the 1981 launches we track. It was saved at well above the usual rate, which is the signal that matters more than reach for anything with a considered purchase behind it.
RNA-binding proteins (RBPs) recognize RNA by sequence and shape, but which matters varies by site. Introducing Pythia, an interpretable AI model trained on a new high-resolution atlas of 67 RBPs—a collaboration between the @genophoria lab, @czbiohub, @UCSF, @Calico, and
How it compares
A launch means nothing against no one. These are the launches it is actually comparable to, and where this one sits among them.
| Compared with | Launches | Median views | This one | Rank |
|---|---|---|---|---|
| Product release the same kind of announcement | 954 | 692K | 0.0x | 900 |
| 25K to 100K followers accounts of a similar size | 264 | 963K | 0.0x | 251 |
| Every launch all of them, for scale | 1981 | 688K | 0.0x | 1869 |
What this launch shows
The post went out from an account with 48K followers and was seen by fewer people than follow the account. Accounts of that size usually reach 20.9 times their following.
This one did not get far past the people who already followed it. It ranks 251 of 264 launches from accounts that size. Against every launch in the directory it is below the median of 688K views, at rank 1869 of 1981.
Reposts led, 21 at 15.3 per 10,000 views against a median of 2.5.
A repost is an endorsement without a comment, and a launch with an unusual repost rate was being passed along on purpose. Bookmarks: 71. Replies: 6.
The post opens with “RNA-binding proteins (RBPs) recognize RNA by sequence and shape, but which matters varies by site”.
It carries an image and no video. 92% of launches in the directory carry a video, so this is the rarer choice, and the few image launches that travelled did it on the strength of the image.
The copy runs 40 words, about the usual length for a launch post here, where the median is 41. The body carries a link, so the post had somewhere to send the reader and paid a little reach for it.
It went out on a Tuesday. Launches posted on a Tuesday have a median of 651K views in the directory, and Friday is the strongest day at 880K.
Attributing signups to a launch covers this: a save rate this high is the number to follow into the product. For the next one, read giving people something to reply to: the conversation is what carried this one.
Why posts from large accounts under-reach is the guide for it: a post seen by fewer people than follow the account was held back by the ranking model.
Questions about this launch
When did Arc Institute launch Pythia?
Arc Institute posted the launch on X on 13 October 2026.
How many views did the Pythia launch post get?
13,682 views at the last read, ranked 1869 of the 1981 AI launches Doomers tracks, 0 times the account's following.
Who posted the Pythia launch?
@arcinstitute, which has 48K followers.
Planning something like this?
We run launches on X for AI companies, with creators who already hold the audience you want reaching.