Updated

AI models released in December 2025

13 model releases from 9 providers in December 2025, with announcement dates, official sources, and practical notes for builders.

Releases this month

Dates refer to the linked announcement or release milestone. Previews are labeled in the entries; historical availability and pricing may have changed.

Release details

  1. OpenAI

    GPT-5.2

    The GPT-5.2 series launched for professional work, including documents, spreadsheets, coding, and longer tool workflows.

    For buildersTest complete deliverables, such as an editable report and its calculations, rather than isolated answers.