Free AI social media post generator for 8 networks
Describe the topic or announcement, pick the network and the goal, and get three complete posts ready to edit. Free, with no sign-up and no login.
An AI social media post generator writes a complete post from a short brief: the opening hook, the body, a call to action and, where the network uses them, hashtags. This one returns three posts per run for Instagram, LinkedIn, X, Facebook, Threads, TikTok, Bluesky or Pinterest, written to that network's length limit and aimed at reach, engagement, sales or trust. It is free and needs no account.
AI post generator at a glance
- Price
- Free, no sign-up, no login
- Posts per run
- 3 complete posts, each a different angle: a detail or number, a short story, a plain direct post
- Each post has
- Hook line, body, call to action, hashtags where the network uses them, character count, copy button
- Networks
- Instagram, LinkedIn, X, Facebook, Threads, TikTok, Bluesky, Pinterest
- Length limits it enforces
- X 280, Bluesky 300, Threads 500, Instagram 2,200, TikTok 2,200, LinkedIn 3,000 characters
- Goals
- Reach, engagement, sales, trust
- Tones and languages
- 8 tones, 10 languages (English, Spanish, French, German, Chinese, Japanese, Korean, Hindi, Turkish, Russian)
- Fair use
- 20 runs per 10 minutes, shared with the caption, hashtag and bio generators
How to use it
- 1Type the topic or announcement in a sentence or two, with the one detail that makes it yours: a date, a price, a number, a name.
- 2Add the business in one line, then pick the network and the goal: reach, engagement, sales or trust.
- 3Choose a tone and a language, generate three posts, check the character count, copy the one you like and edit it.
What the AI post generator does
It writes the whole post, not a line to build on. Each of the three posts has a hook (the first line people see before 'more'), a body, a call to action that matches the goal you picked, and hashtags on the networks where they help. Hashtags are placed at the end, after the text.
The goal changes the post. Reach asks for a save or a share and leans on a useful fact or a list. Engagement ends on a question or a choice. Sales leads with the buyer's benefit and one clear next step. Trust uses proof: a number, how something is made, a customer result you supplied.
The model uses only the facts you type. It is told not to invent prices, dates, statistics or customer names, so a thin brief gives a thin post. It writes text only; it does not make images or videos.
The per-network rules it applies
Every post is written to a target length under the network's hard limit. After generation the tool counts the characters of the full post. If a post runs over a hard limit, the hashtags are dropped first; if it is still over, the count shows in red so you can trim it before posting.
- Instagram: 2,200 characters, written to 400 to 900. Hook in line one, short paragraphs, up to 5 hashtags at the end (Instagram's cap since December 2025)
- LinkedIn: 3,000 characters, written to 700 to 1,300. Line one earns 'see more', first person, no emojis, up to 3 hashtags
- X: 280 characters, written to under 250. One idea, at most one hashtag
- Threads: 500 characters, written to under 420. Conversational, at most one topic tag
- Bluesky: 300 characters, written to under 270. Plain, no hashtags
- TikTok: the caption under a video, 2,200 characters through the API, written to 150 to 400, with 3 to 5 hashtags
- Facebook: no practical cap, written to 250 to 600 characters, at most 2 hashtags
- Pinterest: a pin description, keyword first, 200 to 450 characters, no hashtags
How a post generator differs from a caption generator
A caption generator writes the words that sit under a photo or video, usually one short block, and leaves structure and hashtags to you. Our caption generator returns five short options per run with no hashtags.
A post generator is for the post that stands on its own, such as a LinkedIn update, an X post, a Threads post or a Facebook announcement, where the text is the content. It returns fewer, longer drafts with a clear shape: hook, body, call to action, tags. Use the caption generator when the visual carries the post and you need a line under it; use this one when you need the finished text.
Limits and fair use
The tool is free and runs without an account. To keep it that way, each visitor gets 20 runs per 10 minutes, shared with the caption, hashtag and bio generators. The brief is capped at 600 characters and the brand line at 120.
Character counts treat an emoji or an accented letter as one character, which is how most counters work. X counts some characters, such as emojis and links, differently, so leave a small margin on X. Generated posts are drafts: read them, add the detail only you know, and check any claim before you publish.
Questions about this tool.
Is the AI social media post generator free?
Yes. There is no account, no login and no credit card. A fair-use cap of 20 runs per 10 minutes stops scripts, not people.
What does each generated post include?
A hook line, the body, a call to action and, on networks that use them, up to 5 hashtags at the end. Each post shows its character count and has a copy button.
Which networks can it write posts for?
Instagram, LinkedIn, X, Facebook, Threads, TikTok, Bluesky and Pinterest. Each network gets its own length target and hashtag rule.
Does it keep posts under the character limit?
It writes to a target below each hard limit (X 280, Bluesky 300, Threads 500, Instagram and TikTok 2,200, LinkedIn 3,000). If a post still runs over, the hashtags are removed and any remaining overage is shown in red.
Can it write LinkedIn, Instagram and Facebook posts?
Yes. Pick the network before you generate. A LinkedIn post comes out longer and in the first person, an Instagram post puts hashtags at the end, and a Facebook post stays short and plain.
Does it create images or videos?
No. It writes the text of the post. Inside SocialScheduler the agent also designs images, carousels and short videos for each post.
Will it make up facts about my business?
It is told to use only what you type and not to invent prices, dates, statistics or names. Check every draft anyway, since language models can still get details wrong.
How is it different from the AI caption generator?
The caption generator gives five short captions with no hashtags. The post generator gives three complete posts with a hook, body, call to action, hashtags and a length check, aimed at a goal you pick.
Facts on this page reviewed
Writing posts for clients every week?
SocialScheduler plans each client's week, writes every post in their voice, designs the visuals and publishes them. You approve.