OpenAI is an American artificial intelligence company based in San Francisco, established in December 2015. It develops the GPT family of language models, the o-series reasoning models, DALL-E and Sora for images and video, and Whisper for speech, and runs the ChatGPT assistant.
- Founded
- 2015
- Type
- Private company
- Founders
- Elon Musk, Sam Altman, Ilya Sutskever, Greg Brockman and Trevor Blackwell
- AI lab
- Inference provider
- 121 hosted endpoints
Model family
o-series
OpenAI is an American artificial intelligence company based in San Francisco, established in December 2015. It develops the GPT family of language models, the o-series reasoning models, DALL-E and Sora for images and video, and Whisper for speech, and runs the ChatGPT assistant.
Models in this family
4 catalogued models
4 models · 1–4
| Select models to compare | Model | Released | Context | Input /M | Output /M | Parameters | Type | I/O | Openness |
|---|---|---|---|---|---|---|---|---|---|
| o3-deep-researchOpenAIRetired | June 26, 2025 | 200K | — | — | — | Text | text, image → text | Closed | |
| o4-mini-deep-researchOpenAIRetired | June 26, 2025 | 200K | — | — | — | Text | text, image → text | Closed | |
| o3 ProOpenAI | June 10, 2025 | 200K | $20.00 | $80.00 | — | Text | text, file, image → text | Closed | |
| o3OpenAI | April 16, 2025 | 200K | $2.00 | $8.00 | — | Text | image, text, file → text | Closed |