Image captioning
that thinks like us.

Our AI interprets nuance and context to deliver incredibly detailed descriptions of your content.

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A nuanced description of every scene.

While our Image Tagging API can identify over 18,000 objects, sometimes you might need a bit more context than a set of keywords provides. That’s where the SmartLens Image Captioning API comes in. The API will generate a description of your image that considers the context of the scene and the relationships between the items present. With a vocabulary of over 27,000 words, the AI knows more than the average English speaker.

In the picture above, our Image Captioning API describes the relationship between the aurora borealis and the mountains. When optimizing your content for search, accuracy, and more, the extra context our Image Captioning API provides over tags might just make the difference between a sale and a missed opportunity.


Words in vocabulary


Captions returned for each image

Five lines of code.

That's all you need to get started. No ML training or customization required.

See our API reference

Pricing that is simple and transparent.

Our pricing is based on your API request volume, with usage costs reflected on the dashboard in real time to avoid surprises.


Starting at

$ 0 /mo

State-of-the-art image captioning AI

Monthly free tier of 1,000 API requests per month

$3.50 per 1,000 requests after the free tier

Email support


Let's design a custom package for your business.

State-of-the-art image captioning AI

99.9% guaranteed uptime SLA

Custom pricing with volume discounts

Onboarding and integration assistance

Priority support by email or phone

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Get up and running with state-of-the-art AI in just five minutes. And, you don't need your credit card.

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