Context Engineering

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

AI Engineering • Aug 5, 2026

Agent Harness Design: Why an ARC-AGI-3 Score Tripled

Agent harness design decided a benchmark: OpenAI's ARC-AGI-3 score went 13.3% → 38.3% with zero model changes. What that means for your agent loop.

11 min read