DevDay 2023 keynote
Sam Altman · Nov 6, 2023 · 46m · San Francisco, California
Summary
OpenAI's first developer conference launched GPT-4 Turbo with a 128K context and a much lower price, new modalities in the API, Copyright Shield, custom GPTs that anyone can build without code, and the Assistants API for building agent-like experiences. Microsoft CEO Satya Nadella joined Altman on stage.
Key themes: Models, Agents, Pricing · AI-written summary from the published transcript
- 1GPT-4 Turbo supports up to 128,000 tokens of context, 16 times GPT-4's 8K, with knowledge updated to April 20236:05
- 2DALL-E 3, GPT-4 Turbo with vision and a new text-to-speech model all came to the API8:05
- 3Copyright Shield: OpenAI will defend customers and pay the costs of copyright infringement claims11:44
- 4GPT-4 Turbo is 3x cheaper than GPT-4 for prompt tokens12:35
- 5GPTs, custom versions of ChatGPT, can be built without code; a GPT Store was promised for later that month31:03
- 6The Assistants API makes it easier to build assistant experiences with threads, retrieval, Code Interpreter and function calling43:35
Announced
4 available the same day| Announcement | Status |
|---|---|
| GPT-4 Turbo128K context, lower price, April 2023 knowledge | Preview |
| Price cut for GPT-4 Turbo3x cheaper prompt tokens than GPT-4 | GA |
| Copyright ShieldOpenAI defends customers against copyright claims | GA |
| Whisper v3Open-source speech recognition model | GA |
| Custom Models programOpenAI researchers train custom GPT-4 for companies | Announced |
| GPTsCustom ChatGPT versions, GPT Store later in November | GA |
| Assistants APIThreads, retrieval, Code Interpreter, function calling | Preview |
Related keynotes
| Date | Keynote | |||
|---|---|---|---|---|
| Oct 6, 2025 | OpenAI DevDay 2025Sam Altman · 53m · 5 announcedAgents, AI coding, Models | Agents, AI coding, Models | DevDay 2025 was held October 6, 2025 at Fort Mason in San Francisco. | 5 |
| Jun 2, 2025 |  Snowflake Summit 2025Sridhar Ramaswamy, Sam Altman, Sarah Guo · 58m · 3 announcedAgents, Data platforms, Models | Agents, Data platforms, Models | Snowflake highlighted deeper Apache Iceberg support, used by companies like Booking.com, via Catalog Linked Databases | 3 |
About this keynote
Keynote page: www.youtube.com/watch?v=U9mJuUkhUzk
On stage
- Sam AltmanCEO, OpenAI
Companies named: Coca-Cola, Microsoft, OpenAI
Last changed 2026-09-24.
Sources: official keynote videos, their captions and the hosts' recaps, summarized by AI; watch the source for exact wording. Logos via logo.dev; trademarks belong to their owners.