OpenAI launched GPT-4o with low-latency voice and native vision, pushing multimodal conversational UI.
On May 13, 2024, OpenAI presented GPT-4o (“o” for omni), accepting text, audio, and image as inputs/outputs with more natural, lower-latency voice demos.
Wide availability accelerated tutoring and accessibility apps. Competitors answered with their own multimodal upgrades.
4o consolidated user expectation: one assistant that sees, hears, and speaks without brittle pipelines.
The gpt-4o-2024-05-13 snapshot, the version of GPT-4o introduced in May 2024, will stop working in the OpenAI API on October 23, 2026, with GPT-5.6 Sol as the recommended replacement; meanwhile, users rallying under the #keep4o hashtag are asking the company to preserve or release those models.
OpenAI showed Sora, a video model capable of long scenes with surprising visual coherence—still with artifacts.
The o1 series introduced inference with internal “chain of thought” optimized by RL, excelling at math and code.