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Smart AI Instagram Caption Generator (Free Tool)

Use our free AI caption maker for Instagram posts to beat creative slumps. Write copy that sends engagement rates soaring. No login required. Generate captions on the spot👇

Ever find yourself stuck, staring at a blank screen, wishing your creative muse would just show up already? Welcome to the club.

I love cooking up fresh, engaging content for Planable’s Instagram followers, but I’m not a fan of those maddening moments of writer’s block.

So, we rolled up our sleeves and created something to save us all from the agony: a free AI Instagram caption maker for writing captions that delight and captivate.

“Our smart AI Instagram caption generator works by using machine learning algorithms and natural language processing to analyze user input and create unique and relevant caption suggestions.”

Nicu Gudumac, CTO & Founder @ Planable

What started as an internal AI tool quickly evolved into a free AI Instagram caption maker that we’re now excited to share with the world.

How to generate AI Instagram captions with our free tool

Use the smart AI caption generator by Planable to write creative captions.

1. Select the type of post you’re writing:

  • Actionable: provide clear steps, tips or a call to action
  • Inspiring: uplift followers with a positive message
  • Introspective: share personal thoughts and encourage your audience to self-reflect
  • Promotional: highlight your products, services, or special offers

2. Select your caption writing style:

  • 😂 Humorous: create funny and entertaining captions
  • 🌟 Inspirational: craft motivating and uplifting captions
  • 📚 Informative: generate educational and factual captions
  • 👋 Casual: compose friendly and relaxed captions
  • 💼 Formal: write professional and structured captions
  • 🙃 Witty: produce clever and quick-witted captions
  • 🎉 Enthusiastic: design excited and energetic captions
  • 💖 Empathetic: formulate caring and understanding captions
  • 💬 Convincing: construct persuasive and compelling captions
  • 😛 Teasing: write playful and slightly provocative captions

3. Select your Instagram caption length:

  • Shorter: a few to-the-point sentences
  • Longer: a detailed and engaging paragraph

4. Select your number of IG captions variations: 1, 3, or 5.

5. Toggle “Use emojis” and/or “Use hashtags” for enriched Instagram captions.

Generate captions with our tried and tested AI prompts

Need to schedule your next Instagram post and drawing blanks? No worries, I’m here to help.

I know first hand how time consuming it is to write an Instagram caption that knocks it out of the park every. single. time.

Our tool can generate Instagram captions automatically with the option to create multiple outputs and refine the generated captions based on your input.

Steal our free AI prompts to create the perfect caption for Instagram. Just copy paste the prompts in the Instagram Caption Generator above and replace our examples between the brackets with your own info.

Generate creative Instagram captions

Create an Instagram caption that is creative and unique for [your content or theme]. Use imaginative language and a playful tone to capture the essence of [your brand or message].

Generate engaging Instagram captions

Write an engaging Instagram caption for [your post] that encourages interaction from [your audience]. Include a question or call-to-action to prompt comments and likes.

Generate compelling Instagram captions

Compose a compelling Instagram caption for [your topic or product]. Use persuasive language to captivate [your audience] and highlight the key benefits or emotions associated with [your content].

Generate attention grabbing captions

Draft an attention-grabbing Instagram caption for [your post]. Start with a bold statement or interesting fact to immediately capture [your audience’s] attention and keep them reading.

Generate product Instagram captions

Write an Instagram caption about [your product]. Highlight its [unique features] and [benefits]. Include a call-to-action that encourages followers to [learn more] or [make a purchase].

Generate behind-the-scenes and culture Instagram captions

Generate an Instagram caption that gives a behind-the-scenes look at [your company/event/process]. Share interesting details about [what’s happening behind the scenes] and emphasize the company culture or team effort.

Generate industry news and trends Instagram captions

Draft an Instagram caption that shares the latest news or trends in [your industry]. Explain why this news is important and how it impacts [your audience or business].

Generate event announcements and recaps Instagram captions

Act as a [social media marketer]. Create a caption announcing [your event]. Provide key details such as [date, time, location, and purpose]. Or, create a recap caption highlighting the best moments and outcomes of [the event].

Generate employee spotlights and stories Instagram captions

Compose compelling captions spotlighting [an employee or team member]. Share their role, achievements, and an interesting story or fact about them. Highlight how they contribute to [your company’s success].

Generate partnerships and collaborations Instagram captions

Create a post announcing a partnership or collaboration with [another brand or influencer]. Explain the nature of the collaboration and the benefits for [your target audience].

Generate user-generated content and reposts Instagram captions

Write an Instagram caption for reposting user-generated content from [a customer or fan]. Acknowledge and thank [the creator] for their contribution, and share why this content is meaningful for [your brand].

Generate seasonal campaigns and promotions Instagram captions

Draft an Instagram caption promoting my [seasonal campaign or promotion]. Highlight the special offers or products available and create a sense of urgency by mentioning [limited time or availability].

Generate quotes and inspirational messages Instagram captions

Write an inspirational Instagram caption about [insert your topic] that will engage the target audience [insert your audience]. The first sentence should include a hook that makes me want to keep reading.

Generate product tutorials and how-to Instagram captions

Write an Instagram post that explains a tutorial or how-to for [your product]. Break down the steps clearly and concisely, and mention the benefits of following this guide for [your target audience].

Generate FAQs and common questions Instagram captions

Craft an Instagram caption addressing a frequently asked question about [your product or service]. Provide a clear and helpful answer that resolves [your audience’s concern].

Generate community involvement and social responsibility Instagram captions

Draft an Instagram post showcasing [your company’s community involvement or social responsibility initiative]. Highlight the impact of [your efforts] and encourage your followers to participate or support the cause.

Generate brand stories and values Instagram captions

Compose an Instagram caption that shares a story about [your brand] and its core values. Explain how [these values] drive your mission and resonate with [your audience].

Generate seasonal and holiday Instagram captions

Write an Instagram caption themed around [a specific season or holiday]. Include festive elements and highlight any special promotions or events your brand is offering during [this time].

Instagram caption generator FAQs

How long should Instagram posts be?

Instagram captions can be up to 2,200 characters long but the ideal length for high engagement is around 125 characters. For story telling, you can use up to 300 characters. And if you want to light your comment section on fire, aim for longer captions of up to 2,200 characters.

How can I improve my Instagram captions?

To improve your Instagram captions, keep them short and to the point. Use emojis and add value. Try our free AI Instagram caption generator to write a killer first sentence, tell a story, or ask your followers insightful questions. Finish with a strong call to action.

How do you get better at writing social media captions?

Find captions you love and give them a twist of your own. Absorb their brilliance while you craft your unique flair. Our Instagram caption generator comes in clutch for this exact purpose and is your secret weapon always ready to swoop in and save the day.

Best practices for generating AI Instagram captions

When it comes to content creation, it’s all about balance. You want your captions to feel fresh and engaging, but also stay true to your brand identity. Think of it as a conversation with your audience: a blend of informative and entertaining.

Unique hashtags

Use unique but relevant hashtags to stand out in the crowded Instagram space. This isn’t just about hopping on the latest trends but finding niche hashtags that resonate with your community and brand messaging.

We know for a fact that relevant hashtags can significantly boost engagement. Don’t just go for the obvious ones. Dig deeper into what your audience is talking about and join those conversations. Look outside of Instagram: Reddit, Quora, and Slack channels are a treasure trove. This strategy helps in making your posts more discoverable and relatable.


Emojis are our digital wingmen in adding personality and tone to captions to avoid sounding like soulless robots. They can convey emotions, break up text, and make your captions more visually appealing. Sprinkle them in strategically to enhance your brand voice.

Brand identity

Your brand identity is the soul of your online presence and should shine through every caption. Consistency is key. Maintain a consistent tone of voice that reflects your brand messaging.

  • Tone of voice: are you the quirky, fun-loving type, or do you exude serious professionalism? Whatever your style, keep your Instagram posts consistent. No one likes a brand with a split personality.
  • Reflect your messaging: every Instagram caption should echo your brand’s core message. If your brand is all about eco-friendly living, then even your jokes should be greener than Kermit the Frog.
  • Perception alignment: make sure what you write matches how you want to be seen. If you’re aiming for sophistication, avoid slang that belongs in a teenager’s group chat.

Optimal word count

Keep an eye on your word count. Instagram allows up to 2,200 characters, but that doesn’t mean you should use them all. Shorter captions can be more impactful, especially when paired with striking visuals. Test different lengths to see what resonates most with your audience.

Tone of voice

Add personality to your Instagram posts with your unique voice to make them more relatable. Whether it’s humor, wit, or heartfelt sincerity, the tone of voice will set you apart from the competition.

Incorporate these practices to craft Instagram captions that not only engage but also strengthen your brand identity and connection with your audience.

Ready to generate captions for your Instagram audience?

My parting words to you: tailor your captions to your followers. Understand their preferences, pain points, and what makes them tick. You might be cracking jokes or dropping knowledge bombs; whatever it is, let your brand’s true identity shine through.

In the wild world of social media, a strong, consistent brand voice is your best defense against the dreaded scroll-past syndrome.

So, generate captions with our free AI tool and let your brand identity do the talking.

Miruna Dragomir

Miruna Dragomir

Miruna Dragomir, CMO @Planable, ex Social Media Comms Manager @Oracle & ex Marketing Coordinator @Uber. 9 years of experience in social media and marketing. Built Planable’s brand and reputation and helped grow it from 50 customers to over 6.5K. Social media fanatic, tech geek & a sucker for learning.