OpenAI launches GPT-4o, a natively multimodal ‘omni’ model
Confirmed
Importance: major (4 of 5)The takeaway
GPT-4o reasoned natively across text, audio and vision in real time, responding to speech in as little as 232 ms, and brought GPT-4-level intelligence to free ChatGPT users.
Status
- Claim
Confirmed
- Our reporting
- High confidence
- Importance
- Major (4 of 5)
- Last verified
- 29 September 2026
Your AI and this story
- GPT-6 AstraIn its training data
- Claude Opus 5.5In its training data
- Gemini 4 HydrogenIn its training data
- Grok 4.7In its training data
It happened before the cutoffs of all four assistants, so it can be in their training data.
Key facts
- Announced 13 May 2024
- Audio response latency as low as 232 ms, ~320 ms on average
- Single end-to-end model for text, vision and audio
- Available to free ChatGPT users; half the API price of GPT-4 Turbo
- Advanced Voice Mode rolled out later in 2024
What happened
OpenAI demoed a conversational assistant that could hear, see and speak with human-like latency and emotional expressiveness.
Why it matters
Made natural voice interaction with AI mainstream and set the standard for omni-modal assistants.
Sources
2 sources from 1 site. Numbers match the chips in the text.
2 sources: 2 primary
Primary
- Hello GPT-4o (OpenAI)openai.com, official
- GPT-4o System Card (OpenAI)openai.com, docs
Changes
- Filed