Post-training
How models learn what to do
Follow the learning loop from demonstrations and feedback to practice, parameter updates, and the next task.

Explore the ideas, systems, and questions shaping the path to AGI.
Begin your journeyTHE COLLECTION
Each drop is a world to explore. Open a book and follow the ideas inside.
Post-training
Follow the learning loop from demonstrations and feedback to practice, parameter updates, and the next task.
Agent infrastructure
Trace a coding task through model calls, the agent harness, and the computer that searches, edits, and tests.
Compute
Explore the infrastructure that makes intelligence possible, from accelerators to clusters, power, and cooling.
Semiconductors
Follow the interdependent companies, machines, and manufacturing steps behind an advanced chip.
Benchmarks
Explore the tests we use to evaluate AI, what their scores reveal, and what they leave unanswered.
Alignment
Understand the challenge of making powerful intelligence reliably serve human values and intent.
Recursive self-improvement
Enter the research loop: how AI could help improve AI, what the evidence shows, and what remains uncertain.
YOUR FIRST EXPLORATION
New to the library? Follow three connected questions: how models learn, how we measure them, and how we make them worthy of trust.
Start with post-training