Before it
GPT-4 had image capability described in its report but not released.
The problem
Vision raises distinct safety questions, from face recognition to CAPTCHA solving.
What it introduced
A public vision-capable assistant, shipped with a system card documenting the refusals and mitigations.
Why it matters
It made multimodal input an everyday feature and set expectations for how visual capability gets released.
What modern models inherit
Images as ordinary input to an assistant.
What came next
GPT-4o folded vision, audio and text into one model.