OpenAI
94 models across 27 families · Latest: GPT-5.5 (2026-04)
Cutting-edge research and development.
OpenAI is an American AI company founded in 2015. Cutting-edge research and development. OpenAI ships 27 model families totaling 94 models, with the most recent release GPT-5.5 in 2026-04. Notable families include GPT-5.5, OpenAI Privacy Filter, and GPT Image. Use it as a stable reference for lab background, release coverage, and follow-up model pages as they are added. Researchers and evaluators can scan counts, links, release history, and source references without leaving the directory.
About
OpenAI is a pioneering AI research organization that has made significant breakthroughs in generative models, such as GPT-3 for natural language processing and DALL-E for image generation. Their commitment to AI safety and alignment makes them a key player for software engineers and SaaS executives interested in developing responsible and cutting-edge AI applications.
Featured models
| Model | Released | Context | Input price ($/1M) | Output price ($/1M) | License |
|---|---|---|---|---|---|
| GPT-5.5 | 2026-04-23 | 1.05M | $5 | $30 | Proprietary |
| GPT-5.5 Pro | 2026-04-23 | 1M | $30 | $180 | Proprietary |
| OpenAI Privacy Filter | 2026-04-22 | 128k | - | - | Apache 2.0 |
Model families
Recent releases
- GPT-5.5- 2026-04-23
- GPT-5.5 Pro- 2026-04-23
- OpenAI Privacy Filter- 2026-04-22
- GPT Image 2- 2026-04-21
- GPT-Rosalind- 2026-04-16
FAQ
Who founded OpenAI and when?
OpenAI was founded in 2015 and is associated with San Francisco, California, United States.
What models has OpenAI released?
OpenAI ships 94 models across 27 families: GPT-5.5, OpenAI Privacy Filter, and GPT Image.
Is OpenAI's technology open source?
Some OpenAI models are open-weight (OpenAI Privacy Filter, gpt-oss-120b, and gpt-oss-20b); others are proprietary (GPT-5.5, GPT-5.5 Pro, and GPT Image 2).
Where is OpenAI headquartered?
OpenAI is headquartered in San Francisco, California, United States.
What is OpenAI known for?
Cutting-edge research and development. Its most prominent tracked family is GPT-5.5.
How can I access OpenAI's models?
OpenAI's models are available via OpenAI API, OpenRouter, Azure OpenAI, Replicate API, and AWS Bedrock.
Explore related pages
Last reviewed: 2026-04-29. Data sourced from public lab announcements and provider documentation.