GPT-4o

OpenAI removed the GPT-4o text model from ChatGPT, with the last Custom GPT access on Business, Enterprise and Edu ending April 3, 2026.

Personal assistants · 13 May 2024 – 3 Apr 2026 · OpenAI

The record

OpenAI's multimodal flagship model experience in ChatGPT for conversational text, image understanding and related everyday assistance.

Verification notes

Shutdown: OpenAI retired GPT-4o from ordinary ChatGPT conversations on February 13, then ended its remaining Custom GPT access across Business, Enterprise and Edu after April 3. This record therefore covers the complete named GPT-4o text-model experience inside ChatGPT. GPT-4o in the API and the separate models behind ChatGPT Voice and Images remain outside this record and were not declared shut down. Closure source
Dates checked: Announced 29 Jan 2026 · Verified 23 Sep 2026
AI functionality: AI functionality source
Launch: OpenAI introduced GPT-4o and began rolling its text and image capabilities into ChatGPT on May 13, 2024. Later voice and API availability are separate surfaces.
Location: United States · San Francisco. OpenAI's May 7, 2025 Department of Energy submission records its address in San Francisco, California. This records the operator's historical city, not a service market or server location. Coordinates use the Natural Earth city point rounded to two decimal places. Location source · Coordinate source