TLDR AI 2025-12-12

Disney + OpenAI 🤝, GPT-5.2 🤖, Gemini Deep Research API 💻

How Ahrefs built AI that puts the boring parts of marketing on autopilot (Sponsor)

🚀

Headlines & Launches

Introducing GPT-5.2 (8 minute read)

🧠

Deep Dives & Analysis

Fast Model Loading (8 minute read)

Prompts for Open Problems (6 minute read)

Business AI adoption flatlines (5 minute read)

👨‍💻

Engineering & Research

Build with Gemini Deep Research (4 minute read)

Learning Collatz - The Mother of all Rabbit Holes (17 minute read)

200k Tokens Is Plenty (4 minute read)

🎁

Miscellaneous

Broadcom reveals its mystery $10 billion customer is Anthropic (4 minute read)

ChatGPT's ‘Adult Mode' Is Coming in 2026 (2 minute read)

⚡️

Quick Links

Chinese AI in 2025, Wrapped (17 minute read)