Managed agent API launch and guide · OpenAI · Intermediate to advanced
You want OpenAI's September 10, 2026 launch guide for building long-running cloud agents with the managed Codex harness, context compaction, tool search, multi-agent delegation, and your choice of hosted or self-managed sandbox.
openai, agents, codex, context compaction, multi-agent
Guide · xAI · Intermediate to advanced
You want xAI's official guidance for shrinking long conversations into reusable compact state before teaching Grok-heavy agent workflows at scale.
xai, context compaction, agents, long context, cost optimization
Engineering study · Perplexity · Intermediate to advanced
You want a practical primary-source study of co-designing a compact local model and agent harness, including on-demand skills, context compaction, sandboxing, verification, and optional frontier-model escalation.
perplexity, local models, agent harnesses, privacy, sandboxing