OpenAI Introduces GPT-5.5 for Coding, Knowledge Work and Research
OpenAI released GPT-5.5 and then made GPT-5.5 and GPT-5.5 Pro available through its API the following day.
OpenAI introduced GPT-5.5 as a model aimed at agentic coding, knowledge work and scientific research. The company updated the announcement the next day to say GPT-5.5 and GPT-5.5 Pro were available through the API.
The release concentrated on the work categories where agents were moving from experiment to budget line: software, professional analysis and research. The API availability mattered because it let product teams test the model inside their own tools rather than only through a consumer interface.
Editorial sources
Every claim in this briefing traces back to the references below.
- Introducing GPT-5.5 — OpenAI — Primary model release https://openai.com/index/introducing-gpt-5-5/
