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AI Image Captioner | Visual Caption Generation API | WaveSpeedAI

wavespeed-ai/image-captioner

High-accuracy Image Captioner for generating detailed, human-like descriptions from images. Ideal for content understanding, accessibility, dataset labeling, SEO, and multimodal AI workflows. Ready-to-use REST inference API, best performance, no coldstarts, affordable pricing.

Hint: You can drag and drop a file or click to upload

preview
If set to true, the function will wait for the result to be generated and uploaded before returning the response. It allows you to get the result directly in the response. This property is only available through the API.

Idle

A man with tousled hair sits calmly in a sunlit room, eyes closed as if lost in thought or music. Large windows reveal a vibrant blue ocean, contrasting with the warm, golden interior. White curtains flutter gently, adding a sense of tranquility to the coastal retreat.

Your request will cost $0.001 per run.

For $1 you can run this model approximately 1000 times.

ExamplesView all

README

Image Captioner API

Overview

The WaveSpeedAI Image Captioner converts images into rich, human-like textual descriptions. Designed for applications requiring vision understanding, accessibility, content moderation, dataset labeling, and SEO enhancement.

Compatible with all image formats and deployable in high-throughput production pipelines.

Key Features

  • Generates accurate and natural image descriptions
  • Supports detailed object recognition and scene understanding
  • Ideal for labeling, accessibility (alt-text), and visual search
  • Works in automated workflows and REST API pipelines

Why Use It?

The Image Captioner improves any workflow requiring:

  • Content understanding from images
  • Automatic alt-text generation for accessibility
  • Dataset or training data labeling
  • Multimodal pre-processing for LLMs or agents