OpenAI says the new image recognition feature in ChatGPT lets users upload one or more images for conversation, using either the GPT-3.5 or GPT-4 models.

Computer vision, or image recognition, as it's commonly called, has been around in various iterations for decades. It's used in cameras to detect if there's a face to focus on.

There are many major players investing heavily in image recognition including Amazon, Google, IBM and Microsoft. But which does the best job?