GPT-4 Turbo, GPTs and Assistants API (DevDay 2023)
GPT-4 Turbo ships with a 128K context and 3x cheaper input, alongside custom GPTs, the Assistants API, DALL·E 3 in the API and text-to-speech.
GPT-4 Turbo has knowledge to April 2023 and prices of $0.01 input / $0.03 output per 1K tokens. Assistants API (beta) adds threads, retrieval and code interpreter; GPTs let users build and share custom ChatGPTs, later listed in the GPT Store.
- Date
- Monday, 6 November 2023
- Lab
- OpenAI
- Kind
- model
- Access
- closed API
Figures
| Measure | Value | Measured by |
|---|---|---|
| GPT-4 Turbo input / output price | $0.01 / $0.03 per 1K tokens 3x and 2x cheaper than GPT-4 | company |
| Context window | 128K tokens about 300 pages of text per OpenAI | company |
The developer changelog (opened) confirms the 2023-11-06 launch of GPT-4 Turbo preview, Assistants API, DALL·E 3 API and TTS. Prices and context come from a search-result summary of OpenAI's DevDay post (page returned 403 to the fetcher).
Sources
- developers.openai.com/api/docs/changelog
- hidekazu-konishi.com/entry/openai_gpt_model_release_timeline.html
- openai.com/index/new-models-and-developer-products-announced-at-devday/
This record was checked against its sources on 6 October 2026. How we check