- vendor
- OpenAI
- whatItIs
- OpenAI-managed hosted runtime that exposes the same Codex harness behind Codex and ChatGPT for Work: managed sessions, orchestration, context compaction, and recovery for long-running cloud agents with sandboxes and subagent coordination.
- hosting
- managed-only
- pricingModel
- no separate API fee; billed via standard model-token rates + tool usage + container time for OpenAI-hosted sandboxes
- modelProviders
- OpenAI-only
- stateModel
- durable sessions (auto context-compaction, resumable across turns)
- toolModel
- function-calling + MCP + web search + tool search + computer-use
- includesMemory
- false
- longRunning
- long-running sessions with automatic context compaction; resumable
- hitlSupport
- true
- observability
- streaming + webhook delivery of session progress
- maturity
- preview
- launched
- 2026-Q3
- notes
- Public beta launched 2026-09-10, corroborated by multiple independent launch-day writeups (MarkTechPost, KuCoin) though the vendor overview page itself does not carry an explicit date. Distinct from OpenAI's already-tracked Agents SDK (an in-process library) and Responses API (a lower-level, largely stateless agentic interface): the Agents API is a new OpenAI-managed hosted runtime. OpenAI manages sessions/orchestration/recovery while the caller supplies tools and chooses the execution environment: an OpenAI-hosted sandbox (same infra powering Codex/ChatGPT), the caller's own infrastructure, or a partner sandbox provider (Cloudflare confirmed by launch-day coverage; Vercel, Modal, and others reported but not independently verified, so the 'nine partner providers' count is dropped as unconfirmed). Sessions can be continued or steered mid-run. Hosting recorded as managed-only per the anthropic-managed-agents precedent (the harness itself is OpenAI-run even though the sandbox environment choice is flexible); the environment-choice nuance is captured above rather than in the hosting enum.
- sandboxRuntime
- OpenAI-hosted sandbox (Codex infra) or self-hosted / partner sandbox (e.g. Cloudflare, Vercel, Modal)
