December 2025

Politics

Pete Hegseth Says the Pentagon’s New Chatbot Will Make America ‘More Lethal’

• Secretary of War Pete Hegseth announced the rollout of GenAI.mil in a video posted to X
• GenAI.mil appears to be a custom chatbot interface for Google Gemini that can handle some forms of sensitive—but not classified—data.
• “There is no prize for second place in the global race for Artificial Intelligence (AI) dominance,” said Emil Michael, Under Secretary of War for Research and Engineering.

Industry

Introducing Mistral 3

• This release includes three state-of-the-art small, dense models (14B, 8B, and 3B)
• And Mistral Large 3 – our most capable model to date – a sparse mixture-of-experts trained with 41B active and 675B total parameters.
• All models are open-source under Apache 2.0

Introducing Devstral 2 + Vibe CLI

• Mistral has released new dev models/tools
• Devstral 2: 123B-parameter dense transformer supporting a 256K context window.
• Devstral Small 2: 24B parameter model available via API or deployable locally on consumer hardware.

Anthropic Accidentally Gives the World a Peek Into Its Model’s ‘Soul’

• Most if not all LLMs use a “System Prompt” that gets injected with your query
• Engineer Richard Weiss seems to have reverse engineered Anthropics System prompt and wrote a blogpost here
• Anthropic Engineer Amanda Askell confirmed this documents existence and accuracy

Society

The Architects of AI Are TIME’s 2025 Person of the Year