Artificial intelligence · 2024

GPT-4o

One model hears, sees and speaks in real time with about human conversational latency.

Released May 13, 2024, GPT-4o ('omni') was trained end to end across text, audio and images, responding to speech in as little as 232 milliseconds. It made natural voice conversation with AI mainstream.

See it in the living tree Wikipedia

Arcs above join it to what it stood on, arcs below to what it led to. The bar places this stretch on the tree's whole timeline.

What it built on 2

GPT-4 2023
Whisper 2022

What it led to 3

Reasoning models (o1) 2024
GPT-5 2025
Universal real-time translation ~2028

Watch

Introducing GPT-4oOpenAI · YouTube

Related measurements

The dashed line marks when it first worked.

Best AI score on GPQA Diamond Latest: 95.8 % correct (2026) Source: Epoch AI, Capabilities & benchmarking (benchmark_data.zip, gpqa_diamond.csv); Anthropic: Claude 3 public launch (March 4, 2024)

Training compute of notable AI models Source: Epoch AI, Notable AI Models (CC BY 4.0)