OpenAI

The company behind GPT-5, DALL-E 3, Sora, and the OpenAI Agents SDK. Founded in 2015, OpenAI has become the most recognized name in generative AI, pioneering both the consumer chatbot market (ChatGPT) and enterprise API infrastructure. In 2026, their GPT-5.2 model features sophisticated reasoning tiers — Instant, Thinking, and Pro — and scored 100% on the AIME 2025 benchmark. Raised a record $40 billion round.