Responses API Brings Native Agent Compaction

Native compaction turns context management from custom agent plumbing into a platform capability, but it is continuity infrastructure—not durable memory.

• –Server-side compaction carries forward key state and reasoning while reducing context size.
• –Tool orchestration and multi-turn continuation make the API better suited to long-running workflows than simple chat requests.
• –Developers still need external storage for durable facts, artifacts, checkpoints, and auditability.
• –Compaction can improve cost, latency, and reliability, but teams should test how aggressively compressed state affects task quality.
• –Combined with hosted execution and reusable skills, Responses API points toward agents that operate as persistent workflows rather than repeated model loops.