
3/4/2026
What this post added
Introduces Codex Spark, a low-latency AI coding model (1200+ tokens/sec) running on Cerebras WSE hardware, enabling real-time developer-AI collaboration. Provides practical strategies for leveraging Spark's speed, including treating it as a pair programmer, using rapid validation cycles (pre-commit hooks, test suites, linting, browser QA), exploring multiple implementation paths, managing context windows with fresh sessions, externalizing state via Git and markdown files (PLAN.md, PROGRESS.md, VERIFY.md), and applying tighter permissions and restrictions (e.g., max diff size, file modification rules). Also suggests a workflow of using a slower Codex model for planning and Spark for rapid execution.