GPT-3.5 Turbo fine-tuning and API updates

Introducing GPT-5.1 for developers

GPT-5. 1 is now available in the API, bringing faster adaptive reasoning, extended prompt caching, improved coding performance, and new apply_patch and shell tools.

New models and developer products announced at DevDay

GPT-4 Turbo with 128K context and lower prices, the new Assistants API, GPT-4 Turbo with Vision, DALL·E 3 API, and more.

First look at GPT-5

See how a group of leading developers use GPT-5 for the first time.

Introducing GPT-5.5

Introducing GPT-5. 5, our smartest model yet—faster, more capable, and built for complex tasks like coding, research, and data analysis across tools.

Introducing GPT-5 for developers

Introducing GPT-5 in our API platform—offering high reasoning performance, new controls for devs, and best-in-class results on real coding tasks.

Fine-tuning now available for GPT-4o

GPT-4 API general availability and deprecation of older models in the Completions API

GPT-3. 5 Turbo, DALL·E and Whisper APIs are also generally available, and we are releasing a deprecation plan for older models of the Completions API, which will retire at the beginning of 2024.

Introducing the GPT Store

Customizing GPT-3 for your application

Fine-tune with a single command.

Update to GPT-5 System Card: GPT-5.2

GPT-5. 2 is the latest model family in the GPT-5 series.

Introducing GPT-4.1 in the API

Introducing GPT-4. 1 in the API—a new family of models with across-the-board improvements, including major gains in coding, instruction following, and long-context understanding.

Databricks brings GPT-5.5 to enterprise agent workflows

Databricks uses GPT-5. 5 for enterprise agent workflows after the model set a new state of the art on the OfficeQA Pro benchmark.