Claude API

2 articles

AI Engineering • Aug 12, 2026

Agent context compaction: keep what the 150K cutoff drops

Agent context compaction drops every block before the summary at 150K tokens. What survives, what instructions silently replaces, and the usage field that lies.

9 min read

LLM Engineering • Jul 2, 2026

Claude Fable 5: Capabilities, Cost & When to Use It (2026)

Claude Fable 5 is Anthropic's most capable model yet. The honest deep-dive: capabilities, the $10/$50 cost math, API behavior, and when to use it.

12 min read