What is FastPost AI used for?

FastPost AI is an AI tweet generator that learns your writing style from past posts and drafts X posts and replies in your voice, with a Chrome extension for inline replies. It is a good fit for posting daily on X without writer's block and drafting replies to other posts in your own style.

Yes. FastPost AI has a free plan, and paid plans start at $6.99 per month. A free trial is also available.

Is FastPost AI open source?

No. FastPost AI is proprietary (closed-source) software and can't be self-hosted. In the Social Media category, open-source options include MultiPost, Postiz and Bluesky.

What are some alternatives to FastPost AI?

FastPost AI competes with Typefully, Hypefury and Tweet Hunter.

FastPost AI: features, pricing and alternatives

About FastPost AI

FastPost AI writes posts for X in the user's own voice. You paste 10 to 15 of your existing posts, the AI analyzes tone, structure, emoji use and writing patterns to build a voice profile, and then a rough idea of a few words is enough to generate a finished post that you copy and publish.

A Chrome extension puts an AI button inside X itself, so replies can be generated in the same voice without leaving the timeline. The site frames the problem as the time it takes to write posts by hand and argues that using your real writing as the base avoids generic AI phrasing.

It is a hosted web app with a demo video, a plans page and the extension, and the site says it is free to start. The workflow is meant to replace staring at a blank page, and no prompting skills are required.

Key features

Voice profile built from your past posts
Post generation from a rough idea
Chrome extension for replies inside X
Matches tone, structure and emoji use
Demo video and free start

Good fit for

Posting daily on X without writer's block
Drafting replies to other posts in your own style

Tags: x-twitter; ai-writing; social-media; chrome-extension; tweets; writing-style; content

FastPost AI: questions and answers

What is FastPost AI used for?: FastPost AI is an AI tweet generator that learns your writing style from past posts and drafts X posts and replies in your voice, with a Chrome extension for inline replies. It is a good fit for posting daily on X without writer's block and drafting replies to other posts in your own style.
Is FastPost AI free?: Yes. FastPost AI has a free plan, and paid plans start at $6.99 per month. A free trial is also available.
Is FastPost AI open source?: No. FastPost AI is proprietary (closed-source) software and can't be self-hosted. In the Social Media category, open-source options include MultiPost, Postiz and Bluesky.
What are some alternatives to FastPost AI?: FastPost AI competes with Typefully, Hypefury and Tweet Hunter.