The Lambda Deep Learning Blog

Your coding harness shouldn't be a black box

Published on July 21, 2026
by Zach Mueller
New models ship every day, both open and closed. The harness you run them through decides how much of that capability you actually get. Depending on the ...

GLM 5.2: a new rise of open-weight agentic models

Published on July 9, 2026
by Zach Mueller
On June 16th, Z.ai released GLM 5.2, its latest flagship model. At the time of announcement, it advertised scores at or near Anthropic and OpenAI's models, and ...

DeepSeek V4: the most expected open-source model ever released, and the quietest landing

Published on May 22, 2026
by Zach Mueller
After 15 months of incremental updates, leaks, and rumored leaks, DeepSeek released version 4. It arrived without the fanfare R1 and R1-preview commanded in ...

Creating highly efficient agents: 450M tool-calling tokens distilled for post-training from top open-source models

Published on April 30, 2026
by Zach Mueller
Harnesses If you've used Claude Code or Codex, you've used a harness. A harness is the infrastructure layer that wraps an AI coding agent and decides how it ...

How to serve Kimi-K2-Instruct on Lambda with vLLM

Published on December 22, 2025
by Zach Mueller
When your model doesn’t fit on a single GPU, you suddenly need to target multiple GPUs on a single machine, configure a serving stack that actually uses all ...