---
title: "OpenAI"
canonical: "https://canmyagentuse.com/atlas/vendors/openai"
contentKind: "page"
locale: "en"
description: "first-party deep dive + Agent Plugins + ACP adapter."
llmSummary: "first-party deep dive + Agent Plugins + ACP adapter."
publishedAt: null
updatedAt: "2026-08-28T00:00:00.000Z"
verifiedAt: "2026-08-28"
tags: ["evidence-atlas", "research"]
---

# OpenAI

first-party deep dive + Agent Plugins + ACP adapter.

Research cutoff: 2026-08-28. Documentation and registry evidence are not runtime certification. Unknown means the package did not establish a defensible claim; it does not mean unsupported.

- Coverage tier: A
- Products: 3
- Exact surfaces: 6
- Supported cells: 63
- Partial cells: 1
- Explicit unsupported cells: 5
- Unknown cells: 225

| Exact surface | Type | Version / observation | Supported | Partial | Unsupported | Unknown |
| --- | --- | --- | ---: | ---: | ---: | ---: |
| [ChatGPT desktop / Codex host](/atlas/surfaces/chatgpt-desktop) | desktop | observed 2026-08-28 | 11 | 0 | 0 | 38 |
| [ChatGPT mobile](/atlas/surfaces/chatgpt-mobile) | mobile | observed 2026-08-28 | 10 | 0 | 1 | 38 |
| [ChatGPT web](/atlas/surfaces/chatgpt-web) | web | hosted observed 2026-08-28 | 11 | 0 | 1 | 37 |
| [Codex ACP adapter](/atlas/surfaces/codex-acp-adapter) | acp-adapter | 1.7.0 | 2 | 0 | 0 | 47 |
| [Codex CLI](/atlas/surfaces/codex-cli) | cli | observed 2026-08-28 | 20 | 1 | 0 | 28 |
| [Codex IDE extension](/atlas/surfaces/codex-ide) | ide-extension | observed 2026-08-28 | 9 | 0 | 3 | 37 |

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