Topic
Axion 1 0
2 episodes
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Model Behavior: Week of November 9, 2026
We spent this week arguing that the agent race just forked: frontier labs are chasing giant unified brains, while everyone else is quietly standardizing on a big-planner / small-doer stack and fighting to own the orchestration layer in the middle. Our read is that if you’re building agents, the question is shifting from “which model is smartest?” to “who controls how your planners, executors, tools and tests snap together.”
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Axion 1.0: Open Agent Foundation Models, Simplified
ByteDance's Axion 1.0 demonstrates that a three-stage training pipeline—two lightweight SFT passes followed by RL—can produce agent foundation models competitive with frontier commercial systems, while releasing the complete reproducible recipe including data construction, verification, and training code.