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VENDOR · OPENAI

OpenAI

GPT, the model family — plus the developer surfaces that wrap it: Codex CLI (the open-source, Rust-based terminal coding agent — the closest analogue to Claude Code), the OpenAI Agents SDK (Python + TypeScript framework for multi-agent apps with handoffs, tools, sessions, and built-in tracing), the OpenAI Apps SDK (MCP servers that render rich UI inside ChatGPT — the modern replacement for the old plugins system), ChatGPT Atlas (OpenAI's Chromium-based AI browser), and Custom GPTs (no-code chat assistants you build in ChatGPT). Honest take? Codex CLI being Apache-2.0 and open-source is a real advantage — you can read the sandboxing code, pin specific versions, fork it. The Agents SDK is provider-agnostic at its core (works with 100+ LLMs via LiteLLM). Apps SDK's MCP foundation means cross-vendor portability isn't marketing copy — it's literal.

Not covered here: OpenAI's own API (api.openai.com). Use OpenAI's docs for that path; use Foundry when you need GPT-5 under Azure governance. Claw covers the five surfaces above because they're where Sush actually works.

Official platform.openai.com/docs Status Live Note Batch B shipped — 19 sourced entries live across 5 products. Sush hasn't personally run every command yet; entries flip from sourced to tried as he experiments. PRs with verification notes welcome.
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Products on Claw

CLI ● live

Codex CLI

OpenAI's terminal coding agent — open-source (Apache-2.0), Rust-based. Installs via npm (`npm i -g @openai/codex`) or Homebrew (`brew install --cask codex`). Runs on macOS, Linux, Windows 11 native, WSL2. Sandbox-protected by default. MCP-native (client and server). 8 pages: overview · install · auth · use cases · pitfalls · MCP · models · updates feed.
API / SDK ● live

OpenAI Agents SDK

Python + TypeScript framework for multi-agent apps. Provider-agnostic core (works with 100+ LLMs via LiteLLM / any-llm). Primitives: Agents, Sandbox Agents, Handoffs, Tools, Guardrails, Sessions, Tracing, Realtime. Replaces Swarm + parts of the Assistants API. 5 pages: overview · concepts · first agent · patterns · tracing.
API / SDK ● live

OpenAI Apps SDK

MCP servers that render rich UI inside ChatGPT. Widget HTML served with the `text/html;profile=mcp-app` MIME type. JSON-RPC over postMessage bridge. Standardised as MCP Apps. Different from Custom GPTs (no-code) and GPT Actions (OpenAPI). 3 pages: overview · MCP plugin server · widget rendering.
Hosted product ● live

ChatGPT Atlas

OpenAI's web browser — Chromium-based (Blink engine). Launched Oct 21, 2025 (macOS first; Windows / iOS / Android following). Sidebar assistant + cursor chat + tab-level memory. Agent mode is Plus / Pro / Business only. Being merged into a unified ChatGPT + Codex desktop superapp during 2026. 2 pages: overview · use cases.
Hosted product ● live

Custom GPTs

No-code chat assistants built inside ChatGPT — instructions, knowledge files, Actions. Distributed via the GPT Store. Users need a ChatGPT Plus / Team / Enterprise subscription. Different from the Apps SDK (which is code-first and renders custom UI). 1 pages: overview.