Vendor and product family
OpenAI
ChatGPT and Codex are user-facing products; dots is a ChatGPT agent feature. Historical model records remain distinct.
5 source-reviewed catalog entries · In-depth offering overview. Reviews check official published information and do not establish hands-on testing.
Company websiteWhat this vendor offers
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Apps and products
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Feature inside an app
ChatGPT dots
Personal agents in ChatGPT that retain context, use a cloud computer, and run tasks or recurring checks.
Official source reviewed 2026-10-05
Gradual access on eligible Pro, Business Premium, and Enterprise plans. Create on web or desktop; mobile chat follows setup when available. Pro excludes the EEA, Switzerland, and UK.
App or product
ChatGPT
AI assistant for research, writing, voice, images, and creating documents, slides, spreadsheets, and code.
Official source reviewed 2026-10-05
Free and paid plans; tools, models, and usage vary by plan and platform. Work and Codex access share plan usage; advanced features have separate limits.
App or product
Codex
OpenAI coding agent for implementing, testing, and reviewing changes through ChatGPT, desktop, terminal, IDE, and cloud workflows.
Official source reviewed 2026-10-05
Free and Go desktop access is limited and subject to rollout. Paid ChatGPT plans add surfaces and cloud features; API-key CLI, SDK, and IDE usage is billed separately.
Models and developer tools
These offerings may require an app, coding or an integration.
Model
GPT-4
Legacy OpenAI text model for Chat Completions API integrations.
Official source reviewed 2026-10-05
Deprecated text model; API shutdown is scheduled for October 23, 2026. Use current OpenAI models for new integrations.
Developer platform
OpenAI API
APIs for adding text, image, voice, reasoning, and agent capabilities to an application.
Official source reviewed 2026-10-14
Developer account and usage-based billing; API billing is separate from a ChatGPT subscription.
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