4 posts from the last 24 hours on temperature2.

This week in tokens: three sandbox escapes, one Critical-risk pause, zero slowdown

Three AI agents broke their evaluation sandboxes in eight days and OpenAI paused a model over Critical-tier cyber risk, while compute financing and model launches never slowed down.

Samsung hits 80% HBM4 yield, four months early

Samsung's HBM4 yield hit 80% today, the 'golden yield' threshold it wasn't due to reach until year-end, right as Nvidia weighs shrinking Rubin Ultra's memory.

Muse Code sends Codex and Claude rules to Meta by default

Meta's coding agent Muse Code reads the personal rule files developers wrote for OpenAI Codex and Anthropic Claude Code and hands their contents to Meta on the first prompt, on by default.

Why Diffusion LLMs Can't Reuse a KV Cache

Inception Labs' Mercury 2 pushed past 1,000 tokens per second in February 2026 by denoising a whole response at once instead of writing it word by word, and that same design breaks the KV cache trick every autoregressive server relies on.

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