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your.account Last sunset of the trip and nobody wanted to leave the sand 🌅 Same three people, same terrible playlist, best week of the year. What's the one trip you'd relive tomorrow?
Example
31 words · 170 / 2,200
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How to use the Instagram Caption Generator
Three ready-to-post captions in your tone, previewed on a real post.
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Step 1
Describe the post
What's in the photo, and the story behind it.
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Step 2
Pick a style
Choose a tone, a length and extras like hashtags.
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Step 3
Preview and copy
Get three captions, see them on a post, copy the best.
- Free to use
- No sign-up
- Your key stays in your browser
Eight Instagram caption styles
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Casual
Like a message to a friend. Everyday posts.
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Formal
Polished, no slang. Brands and announcements.
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Witty
Wordplay and a light joke. Built for comments.
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Bold
Short, confident lines. Launches and big news.
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Inspiring
An uplifting line. Fitness, milestones, growth.
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Story
A short story with a turn. Carousels and long posts.
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Minimal
A few words. Lets a strong photo speak.
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Poetic
Rhythm and imagery. Art, nature and mood posts.
Instagram Caption Generator FAQ
Is this Instagram caption generator free?
Yes, and there's no sign-up. It runs on your own OpenRouter account — free models cost nothing, and paid models cost a fraction of a cent per run.
Do you store my posts or my API key?
No. There is no server. Your key and history stay in your browser, and your text goes straight to OpenRouter.
How long can an Instagram caption be?
Up to 2,200 characters. The feed shows only about the first 125 before "more" — the preview shows exactly where that cut falls.
How many hashtags should I use?
A few specific ones beat a long list. With Hashtags on, the generator adds 3 to 5 that match your post.
Which AI model should I pick?
Small, fast models write good captions for almost nothing. Larger models are better at humour and storytelling. Free models are marked in the picker.
Can I use the captions on TikTok or LinkedIn?
Yes. Pick Formal for LinkedIn, and switch hashtags off where they aren't used.