Topic
Group Relative Policy Optimization Grpo
2 episodes
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GitHub FareedKhan Dev/train LLM From scratch: A straightforward method for training your LLM, from downloading data to generating text.
A single-GPU end-to-end LLM training guide lands on GitHub—hand-written PyTorch, pretrain to chat in one repo, plus full RLHF. Vince is giddy; Ava wants to know which corner of the GPU shelf this actually runs on. Build Next shows the exact CLI to kick it off on a T4.
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HarnessX rewrites AI scaffolding mid task | VentureBeat
Xiaomi's HarnessX treats AI agent scaffolding as a first-class, modular object that can evolve mid-task without changing the underlying model. A trace-driven RL engine (AEGIS) automatically rewrites harness components—prompts, tool integrations, memory, control flow—while safeguarding against reward hacking and catastrophic forgetting. When paired with model fine-tuning on execution data (cross-harness GRPO), smaller models like Qwen3.5-9B see +44% gains on embodied planning, suggesting harness engineering, not just model scale, is the real bottleneck for enterprise agents.