Crux compared / OpenTweet
OpenTweet vs Crux: a posting layer, or a loop that learns from your work
OpenTweet sells the act of publishing: a calendar, queues, connectors, an API for agents. Crux starts one step earlier, from the commits, pull requests and releases you ship, and one step later, by reading how each post did.
Updated
OpenTweet calls itself the posting layer for ๐, built for AI agents. It schedules single posts, threads and ๐ Articles, recycles top posts through an evergreen queue, turns RSS, GitHub, Stripe and webhook events into drafts, and gives agents a hosted MCP server, a REST API and a CLI. Its voice learning reads what you already published to mirror your tone, and its analytics feed its scheduling suggestions. Crux (cruxpost.com) is narrower and goes deeper on one loop: every push, merged pull request and release on the repos you pick becomes drafts in your voice, and after you post, Crux measures each post against your usual one and reports which kinds of post work for you only once the pattern beats chance.
What OpenTweet is
OpenTweet presents itself as the posting layer for ๐, built for AI agents. The core is a visual calendar where scheduled posts are dragged between slots, with support for threads of up to 25 posts, ๐ Articles written in Markdown, bulk import and batch scheduling, and an evergreen queue that publishes your top posts again after a cooldown you choose.
For developers and agents it offers a hosted MCP server, a REST API and a command-line tool, and says no ๐ developer account is needed. Connectors point RSS feeds, GitHub, Stripe or any webhook at the queue; its features page says releases, posts and revenue milestones become drafts without a prompt, and its FAQ says the GitHub connector shares your latest commits and releases.
Writing runs on models from several providers and can produce images and short videos as well as text. Voice learning, in its words, reads what you already published and mirrors your tone, and the AI section says nothing publishes until you review and approve it. It also drafts DM campaigns that are sent only after a person approves them, and lists a long set of free tools such as a character counter and a post preview.
Crux and OpenTweet, side by side
| Feature | Crux | OpenTweet |
|---|---|---|
| Drafts posts from your GitHub work | Yes. Each push to a watched repoโs default branch, merged pull request and published release becomes three drafts in your voice, written by a free model through OpenRouter. Work is grouped until it has been quiet for 3 minutes; a release is drafted at once. | Yes, through its GitHub connector, which its FAQ says shares your latest commits and releases as drafts. |
| What it reads from your repos | Commit messages, pull request and release titles and text, the names of the files a commit changed, and repo names, through a read-only GitHub App on the repos you choose. Never a file or a diff. | Commits and releases, per its FAQ. Which parts of a commit it reads is not stated on its site. |
| Posts to ๐ for you | Only what you schedule, on Autopilot. Sign-in is read-only (tweet.read, users.read, offline.access). Drafts wait in your Inbox: Post on ๐ copies one and opens ๐ with it, for you to post. | Yes. It schedules and publishes posts, threads and ๐ Articles, and reposts top posts from an evergreen queue. |
| Learns from how your posts do | Yes. Each postโs numbers at 1 hour, 24 hours and 7 days, against your usual post. Learnings show which kinds of post (launch, feature, fix, improvement, milestone or other), hooks, formats and topics do better or worse for you, and drafts are written with them. | Per-post impressions, engagement rate and growth, and a best-time heatmap built from your own engagement that feeds its scheduling suggestions. Its site does not say the numbers change what the AI writes. |
| Tests patterns against chance | Yes. A group of at least 5 posts is reported only when it falls outside 500 random draws of your own posts. | Not stated on their site |
| Coding agents and API | The Crux plugin for Claude Code and Codex sends your coding agentโs note on what changed, why and for whom, with a token you create in Settings. | A hosted MCP server, a REST API and a CLI. |
| Networks | ๐ only. | ๐, with cross-posting to Bluesky and to LinkedIn personal profiles. Threads is on its roadmap. |
| Price and trial | Pro is $19 a month or $180 a year ($15 a month), and the launch deal is Pro for life for $49 once, for the first 100 buyers. Every account starts with a 7-day free trial of Pro that needs no card. When it ends without a paid plan, the account is read-only: you can still see, download or delete your data, and choose a plan. Cancel anytime. | Pro: 19.99 USD a month (1 ๐ account, 20 posts a day, 30 link posts a month). Advanced: 29 USD. Agency: 49 USD. Yearly billing is discounted. Every plan starts with a free trial of 7 days that needs a card. |
OpenTweetโs column was checked against its own site on : opentweet.io and opentweet.io/pricing and opentweet.io/features. โNot statedโ means we found nothing about it there that day, not that it cannot exist. Prices and plans change: check their site for todayโs.
The difference that matters
The two products learn different things. OpenTweetโs voice learning studies how you write, and its engagement numbers decide when to post. Crux reads which kinds of post did better or worse than your usual one, a launch against a fix, a number hook against a question, and only calls a pattern a finding once it falls outside what random groups of your own posts produce. What it learns goes back into the next drafts.
The source of a draft differs too. OpenTweetโs GitHub connector is one of several feeds into a general queue next to RSS and Stripe. Crux is built around the work: it waits for a burst of commits to go quiet, groups them into one batch, lets your coding agent add what changed and for whom through the plugin, and writes from that.
Which one to pick
Pick OpenTweet instead ifโฆ
- You want a calendar, queues and an evergreen recycler for ๐.
- You want an API, MCP server or CLI so an agent can schedule posts.
- You also post to Bluesky or LinkedIn and want one place to do it.
- You want help writing DM campaigns.
Pick Crux ifโฆ
- Most of what you post on ๐ is what you built, and you want drafts from the work itself.
- You want to know which kinds of post work on your account, tested against chance.
- You want your coding agent to tell the drafting tool why a change matters.
- You would rather try it for 7 days with no card on file.
Other comparisons
- Crux vs CommitLore: CommitLore drafts posts from commits you tag and reads the diff. Crux drafts from every push without reading code and learns from results.
- Crux vs Commit To X: Commit To X writes a quick AI post per commit for you to copy. Crux batches work, writes in your voice and learns from results.
- Crux vs buildinpublic.now: Its site answered with a paused deployment when we checked. Crux drafts from your GitHub work and learns from results.
- Crux vs PubliclyBuild: Its domain did not resolve when we checked. Crux drafts from your GitHub work and measures every post.
- Crux compared with X growth tools