Anthropic's announcement of Fable 5.1 and Mythos 5.1 — one base model, two guardrail postures.
- official
- models
- announcement
- fable
Effective Context Engineering for AI Agents
Anthropic's follow-up essay on context engineering — curation, compression, and attention budgets.
Anthropic's engineering essay on context engineering: treating the context window as a finite attention budget, with techniques for curation, compression, just-in-time retrieval, note-taking, and sub-agent architectures that keep long-running agents coherent. The natural sequel to Building Effective Agents once your prototype starts drowning in its own context.
Charted
Related on the map
Anthropic's canonical essay on agent design — workflows vs agents, and five composable patterns.
- official
- agents
- engineering
- patterns
12-Factor Agents
GuideHumanLayer's 12 design principles for production-grade LLM agents — the closest thing to a 'best practices' manifesto.
- agents
- best-practices
- production
- principles