Free AI social media post generator
Turn any idea into a ready-to-publish post — tailored to the platform's length, tone and format. No signup required.
Want this for all 34+ channels at once?
Postsor turns a single idea into platform-native posts for 34+ channels, plans your week with AI, and publishes everything from one calendar.
Start your 7-day free trialPlans from $39/mo · Cancel anytime
Frequently asked questions
Is this AI post generator really free?
Yes. You get free generations every day without creating an account. With a free Postsor trial you can generate for all 34+ channels at once and schedule posts directly.
Which platforms does it support?
The free tool writes posts for X (Twitter), LinkedIn, Instagram, Facebook, Threads, TikTok, YouTube, Reddit, Pinterest, Bluesky, Mastodon and Telegram. Postsor itself supports 34+ channels.
How is this different from ChatGPT?
Every platform has its own length limits, tone and format. This generator applies platform-specific rules — like 280 characters for X or keyword-rich captions for Pinterest — so the output is ready to publish, not a generic draft.
Can I schedule the generated posts?
Yes. Create a Postsor account, connect your channels, and schedule generated posts to publish automatically — or let weekly Autopilot plan your content for you.