Claude Sonnet 4-5

A developer identifies 'context rot' as the gradual degradation of AI agent performance due to accumulated noise in the context window. The phenomenon causes recency bias, instruction dilution, stale …

An engineer at Anthropic achieved an 85% reduction in Claude API costs by enabling prompt caching on a long system prompt. The caching feature, which stores repeated prompt prefixes for five minutes, …

A developer accidentally spent $3 on a Hermes research agent running across 50 literature review tasks after forgetting to check the bill until the next morning, with the agent retrying failed web sea…