Are There Affordable Alternatives to the X API for Reading and Posting?

There doesn’t appear to be a dependable free replacement for the official API. Unofficial scraping libraries tend to break whenever the site changes and may violate the platform’s terms, so they’re risky for a production app. One third-party provider called Unipile has been used for similar projects, but its availability and long-term support may be changing, so check its current status before building around it.

For X itself, the realistic choices are paying for the official access, reducing how much data you collect, caching results aggressively, or redesigning the app to avoid automated posting and large-scale reading. A completely free, stable, full-featured API alternative is unlikely to last.

If you need the same kind of functionality but aren’t tied specifically to X, you could consider platforms with more accessible APIs, such as Mastodon or Bluesky. They won’t provide X’s users or data, though, so they’re only realistic alternatives if you can change where your app gets content.