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OpenAI

Frontier AI models and the APIs to build on them.

↗ openai.com Listed May 31, 2026 AI & ML

About OpenAI

OpenAI is an AI research and deployment company best known for the GPT family of large language models and the ChatGPT assistant. Its platform gives developers API access to text, vision, audio, and image models that can be embedded into products for chat, summarization, code generation, search, and agentic workflows. Beyond raw model access, OpenAI offers tools like function calling and structured outputs for connecting models to external systems, the Assistants and Realtime APIs for building conversational and voice experiences, and fine-tuning so teams can adapt models to their own data and tone. The models span a range of capability and cost tiers, letting builders trade off latency, price, and reasoning depth for each use case. ChatGPT itself serves as both a consumer product and a reference implementation of what the underlying models can do, with features like browsing, file analysis, and custom GPTs. For enterprises, OpenAI provides higher rate limits, data privacy commitments, and administrative controls. The company publishes usage policies and safety guidance, and invests heavily in alignment research aimed at making increasingly capable systems controllable and beneficial. Widely adopted across startups and large organizations, OpenAI's APIs have become a default building block for teams adding generative AI features to their software.

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