Write captions for Instagram, Facebook, LinkedIn, X and more with AI. Pick a template, tone and length and get up to five versions with hashtags.
An AI caption generator turns a few facts about what you want to say into a ready post. The one in sona.to writes for the network you pick, in your language and tone, and gives you up to five versions to choose from, with hashtags kept apart from the text. The AI content generator page shows it at work.
How the AI caption generator works
You start from a template or a blank brief. Fill in what the post is about: the product, the event, the news, the facts that matter. Then choose:
Network. The caption is written to fit that network's length limit and habits, so a LinkedIn post and an X post from the same brief come out different. For X Premium accounts and Mastodon servers with longer limits, the limit of your own account is used.
Language and tone. Write in the language your audience reads, in the tone you choose.
Length. Short, medium or long, or a custom number of words.
Hashtags. How many you want, from none upward. They are added after the text, without duplicates.
Versions. One to five versions from the same brief, so you can keep the best one.
Templates for every kind of business
Templates are sorted by goal, by format, by writing framework and by trade. Each template asks only for the fields it needs, and empty fields are left out of the post. A separate group, Work on a text, starts from a text you already have instead of a blank brief.
It uses your facts, not invented ones
The generator writes only from the facts you give for your business: prices, opening hours, dates, offers and names are never made up. If you give few facts, you get a shorter post rather than filler. General knowledge about the subject, such as what a dish is made of, can be used.
From caption to scheduled post
Each result can be copied, saved to your Captions library for later or sent straight into a new post with "Use in a post". In the post composer, "Write with AI" works on the text you are writing: shorten it, fix the spelling, translate it or rewrite it from a short instruction. Saved captions can be inserted into any post from the same composer.
Then pick the channels and the time, and the post is scheduled on every network you chose.
Free tools for Instagram captions
Two free tools help with the look of a caption: the Instagram line break tool keeps your spacing, and the Instagram font generator styles words in bold, italic or other letter sets. The character counter checks the length against each network's limit.
Frequently asked questions
Is the AI caption generator free?
Each generation uses AI credits from your plan. The number of credits depends on the length and the number of versions you ask for.
Can it write in my language?
Yes. Choose the language in the generator. The interface and the templates are available in 20 languages.
Will the captions sound like AI?
The generator avoids stock phrases and invented details, and the tone you choose shapes the result. Reviewing and adjusting each caption before posting is still the best habit.
Ready to try it?
Free to start, no credit card required.
