Instagram Caption Generator
Tell it what the post is about (a sentence is enough) choose a tone and you get five captions to pick from. The first line is a headline: it is the only part people see before "more". Line breaks make long captions readable, and a question near the end pulls comments, which Instagram weighs more than likes. Edit anything, copy it, or schedule it straight to Instagram.
Results come from Claude, tuned per platform. Edit them: the best version is the one that sounds like you. We do not store what you type.
What makes a good Instagram caption
The first line is a headline: it is the only part people see before "more". Line breaks make long captions readable, and a question near the end pulls comments, which Instagram weighs more than likes.
Instagram said in 2025 that hashtags exist to categorise content, not to boost reach, and it started testing a cap of five per post. Three to five specific tags in the caption do more than thirty broad ones, and tags in the first comment are treated the same as tags in the caption.
How to get better results
- Give a specific brief: "our spring menu, launching Monday, photo of the pistachio croissant" beats "food post".
- Name the audience if it matters: "for first-time home buyers", "for dentists".
- Put must-include words (a product name, a discount code, a link) in the "anything to include" field.
- Pick the caption that sounds most like you and cut the rest. Generated captions are a starting point, not the post.
Frequently asked questions
Is the caption generator free?
Yes. Ten generations a day without an account, and unlimited inside Social by InstantDM's composer.
Which AI does it use?
Claude, with a prompt written for each platform's length and style.
Do you store what I type?
No. The brief is sent to generate the captions and is not saved.
How long should a Instagram caption be?
Up to 2,200 characters, but 125 characters show before "more".
Related free tools
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