How Reactor launched MiniMax FastH3 on X

What this launch shows

From an account with 10K followers, this reached 81.3 times the account's own following. Accounts in the same band, 5K to 25K followers, reach a median of 50.8 times their following, so this travelled about 1.6 times further than usual for its size.

It ranks 207 of 479 launches from accounts that size. Against every launch in the directory it sits at 1.1 times the median of 688K views.

The response was thin for the reach: 510 bookmarks, 45 replies, 30 quotes and 55 reposts against 574 likes. Views arrived from people outside the audience the product is for, and they kept scrolling. One bookmark for every 1.1 likes is a high ratio and usually means a product people intend to try.

The first line is “Introducing MiniMax FastH3 on Reactor - the latest open-source model by @MiniMax_AI”, the same first word as 25% of launches in the directory. It carries a 1:24 video against a directory median of 65 seconds. Videos between 30 and 90 seconds have a median of 603K views in the directory.

The copy runs 38 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 Wednesday. Launches posted on a Wednesday have a median of 721K views in the directory, and Friday is the strongest day at 880K.

Developer marketing strategy covers this: developers try before they read, so the post has to let them. For the next one, read virality without conversion: reach that outruns response is the pattern this guide is about.

X analytics explained is the guide for it: what each of these numbers means, with benchmarks by account size. Every launch we track in Developer Tool is on that vertical's directory page.