Canonical event

OpenAI releases GPT-4

OpenAI released GPT-4 with text access through ChatGPT Plus and API waitlist expansion; image input remained research preview.

Artifacts

OpenAI releases GPT-4
evidenced_by · frontier_model_release

Signals

GPT-4 established a materially stronger frontier-model capability state in Q1, while public access remained gated and image input was not yet generally available.
supported inference

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