Overview

• OpenAI has published gpt-oss-120b and gpt-oss-20b under open licenses for local use on consumer hardware, marking its first open-weight release since GPT-2 in 2020.
• Key proprietary components—including model architecture, training data and routing mechanisms—remain closed to protect OpenAI’s intellectual property.
• GPT-5, billed as offering PhD-level reasoning and a memory engine exceeding one million tokens, debuted for Pro subscribers and is now rolling out to Free, Plus, Enterprise and API users.
• Access is structured across Free, Plus, Pro and Enterprise plans, with API variants gpt-5, gpt-5-mini and gpt-5-nano tailored to different performance and cost needs.
• The dual approach addresses community and regulatory demands for transparency while leveraging Microsoft Azure and partnerships with Orange and Snowflake to drive real-world adoption.