OpenAI releases GPT-4
GPT-4, a large multimodal model accepting image and text input, reached human-level performance on many professional and academic exams, such as a simulated bar exam around the top 10% of test takers.
Key facts
- Released 14 March 2023 in ChatGPT Plus and via API waitlist
- Simulated bar exam: around the top 10% of test takers (GPT-3.5: bottom 10%)
- Accepted image inputs (image input rolled out later)
- Technical report withheld architecture and training details
- Microsoft confirmed Bing Chat had been running on GPT-4
What happened
OpenAI launched GPT-4 with a technical report and system card, showing a large jump over GPT-3.5 in reasoning and exams.
Why it matters
Defined the frontier for over a year and triggered serious policy attention to AI risk (pause letter, hearings, summits).
Changelog
- 2026-09-29: created
Related events
- OpenAI launches ChatGPT ★★★★★
- Anthropic releases Claude ★★★★
- OpenAI launches GPT-4o, a natively multimodal 'omni' model ★★★★
- Future of Life Institute open letter calls for a 6-month pause on training AI more powerful than GPT-4 ★★★★
- Google DeepMind launches Gemini 1.0 ★★★★
- OpenAI launches GPT-5 ★★★★★
Sources (2)
id: 2023-03-14-gpt-4 · updated 2026-09-29 · open in the interactive timeline