ChatGPT Feature & Plan Reference

This is the product reference for the non-developer OpenAI tracks — the ChatGPT features, plans and controls the courses assume you can name and place. Feature availability and rollout state change often and many features are plan-dependent or in beta; where that is the case it is flagged. Prices are USD as published in September 2026; re-verify on OpenAI’s plan pages before quoting them.

Feature reference

Plan matrix

Business is for organisations of 2–200 employees. Nonprofits get up to 75% off Business/Enterprise. The exact features per tier are rollout-dependent — confirm on the plan page before committing.

Context windows by plan

Context windows are plan-dependent, and the usable user-input share is smaller than the total because system instructions, memories and internal processing consume part of the window.

Models in ChatGPT

GPT-5.6 Sol, GPT-5.6 Sol Pro, GPT-5.6 Terra, GPT-5.6 Luna and GPT-5 Thinking Mini are available; GPT-6 Pro (powered by GPT-6 Astra) is on Pro $100 / Pro $200 / Business / Enterprise. Legacy models remain available. See the model lineup for the API-side IDs and prices.

Enterprise security and admin controls

Data residency

Enterprise data residency is available in ten regions: US, EU, UK, JP, CA, KR, SG, IN, AU, UAE. Match the region to the regulatory requirement before rollout; residency is an Enterprise-level control.

Education and nonprofit programmes

• ChatGPT for Teachers — free for verified U.S. K–12 educators through June 2027. The AFT partnership targets 400,000 K–12 educators.
• ChatGPT Edu — the education plan for institutions.
• ChatGPT Foundations for Teachers — a separate K–12 educator course (launched on Coursera, Dec 2025), distinct from the plans above. See the credential landscape for how the courses and credentials fit together.
• Nonprofits — up to 75% off Business/Enterprise.

Decision table — prompt vs Project vs custom GPT vs workspace agent vs API

   reuse & sharing rises ▲                        integration & control rises ►
   prompt → Project → custom GPT → workspace agent ───────────────► API
   one-off   shared     reusable    delegated task    programmatic, embedded,
             context    assistant   with oversight    scaled

Worked choice — which surface for an internal policy assistant?

1. Many colleagues, shared source documents, ongoing → not a one-off prompt. A Project holds the files and instructions; a custom GPT packages it as a named, shareable assistant. If answers must draw on internal content, enable company knowledge.
2. Needs to act, not just answer (open tickets, update records) → a workspace agent with approvals, not a GPT.
3. Needs to live inside another product or run at scale → the API (Responses API), not ChatGPT.
4. Regulated data / residency → check the plan: Enterprise for data residency (one of ten regions), no training on business data by default.

Key facts to memorise

• Plans: Free · Go · Plus · Pro · Business (standard $20/$25, premium $100/$125 with 5× usage, 2–200 employees) · Enterprise (custom). Nonprofits up to 75% off.
• Context windows are plan-dependent and the user-input share is smaller than the total (Instant 54K Business / 128K Enterprise; Reasoning 256K both).
• Enterprise controls: SAML SSO, SCIM, EKM, RBAC, domain verification, IP allowlisting, Compliance API, no training on business data by default; SOC 2 Type 2 and ISO certifications.
• Data residency in ten regions at Enterprise level.
• Education: ChatGPT for Teachers free for verified U.S. K–12 through June 2027; ChatGPT Edu; AFT targets 400,000 educators.
• Decision order for reach/reuse: prompt → Project → custom GPT → workspace agent → API.