Pacific Design/ artificial intelligence

the lab · status: live · 16 instruments · updated 2026-08-29

The Lab

Reading about a mechanism tells you what it does; holding the knobs tells you why. These are working instruments — a neural network you can train, a tokenizer you can retrain, an attention head you can steer — all running live in your browser. Nothing to install, nothing sent anywhere: the machines are on this page.

  1. Train a neural networkwatch a decision boundary get carved in real timepairs with Foundations
  2. Walk the loss landscapedrop a ball, pick a step size, watch it learn or explodepairs with Foundations
  3. Train a tokenizerwatch a vocabulary assemble itself out of characterspairs with LLMs
  4. Drive an attention headqueries, keys, and a softmax you can feelpairs with LLMs
  5. Sample from a language modelthe temperature knob, attached to an honest little modelpairs with LLMs
  6. Teach an agentdraw a maze, watch Q-learning adapt — then betray itpairs with RL
  7. See your voiceyour microphone, rendered the way models hearpairs with Speech
  8. Steer the denoiserthe guidance knob, from ignoring the prompt to frying itpairs with Generative
  9. Grow an embedding spacetype text, watch words find their neighborspairs with RAG
  10. Route to the expertswatch a mixture-of-experts eat itselfpairs with LLMs
  11. Does 0.9 mean 90%?a reliability diagram you can break and repairpairs with Foundations
  12. Leak a modeladd a column, watch the score soar and the model get worsepairs with Applied ML
  13. Break an agentplant a sentence in a webpage and watch it reach the send buttonpairs with Safety
  14. Move the fairness thresholdthree definitions, one dial, no way to satisfy them allpairs with Safety
  15. Break a RAG pipelinethe answer is in the document — will it reach the model?pairs with RAG
  16. Hunt for neighborsexact retrieval vs the fast guess, recall meter runningpairs with RAG