Description
ChatGPT is OpenAI’s AI assistant, available on web, iOS, Android, and desktop, with a free tier and four paid consumer and business tiers: Go, Plus, Pro, and Business, plus a custom-quoted Enterprise plan. The Free plan gives limited access to GPT-5.5 Instant with capped messages, uploads, and context. Plus unlocks GPT-5.6 Sol, the current flagship reasoning model, along with Projects, scheduled tasks, custom GPTs, and expanded Codex usage. Pro removes most usage caps and adds GPT-5.6 Sol Pro, the highest-accuracy reasoning variant, plus maximum Codex tasks and deep research. Business and Enterprise plans add admin consoles, SSO, SCIM, compliance certifications, and data residency options that no individual plan includes. Every tier gives some level of access to Codex, OpenAI’s coding agent, though usage limits and available models scale with the plan. It suits individuals who want everyday AI assistance, developers who want Codex bundled into their existing subscription, and organizations that need centralized administration.
Key Features
- Model tiers by plan — GPT-5.5 Instant on every plan; GPT-5.6 Sol and Sol Pro reasoning models unlock on Plus and Pro.
- Codex coding agent — bundled into every plan, from limited access on Free and Go up to maximum tasks on Pro.
- Deep Research — multi-step research mode, limited on Free and Go and fully unlocked from Plus upward.
- Projects, scheduled tasks, and custom GPTs — organize work and automate recurring prompts, available from Go/Plus upward.
- ChatGPT Work — agent-style task execution on desktop, web, and mobile, expanded access from Plus upward.
- Sites — build and publish simple web pages directly from ChatGPT, available from Plus upward.
- Enterprise administration — SAML SSO, SCIM, admin console, and compliance certifications on Business and Enterprise only.
How It Works
ChatGPT is used through a chat interface on the web, iOS and Android apps, or a desktop app, with a model picker that routes requests to different GPT-5.6 variants depending on plan and selected intelligence level. Free and Go users default to GPT-5.5 Instant for most tasks, with limited access to heavier reasoning models. Plus subscribers get full access to GPT-5.6 Sol, along with the ability to save Projects, schedule recurring tasks, and build custom GPTs. Pro subscribers get the same features with most usage caps removed, plus access to GPT-5.6 Sol Pro for the highest-accuracy responses and maximum Codex usage. Business and Enterprise plans add an admin console for managing multiple users, along with security certifications and data residency options not available on any individual plan. Context window size and how much text can be submitted in a single request both scale up with plan level, from roughly 12 pages of text on Free up to 680 pages on Pro’s reasoning models.
Technical Architecture & Overview
- Core Engine: OpenAI’s GPT-5.6 model family (Sol, Terra, Luna), with GPT-5.5 Instant as the default fast model and GPT-5.6 Sol Pro reserved for the Pro plan.
- Deployment: Web app, native iOS and Android apps, and a desktop app with ChatGPT Work agent access; also available through the separate, pay-per-token OpenAI API.
- API Surface: Codex CLI and IDE integration bundled into ChatGPT plans; a separate OpenAI API key path bills Codex and other model usage at standard per-token rates outside the ChatGPT plan pool.
- Known Limits: Context window scales by plan, from 27k tokens (Instant model, Free) up to 400k tokens (Reasoning models, Pro); maximum single-request input text ranges from roughly 12 pages on Free to 680 pages on Pro’s reasoning models, per OpenAI’s own plan comparison table.
Pros & Cons
| Pros | Cons |
|---|---|
| Codex coding agent is bundled into every plan, including Free, rather than sold as a separate product | Exact monthly prices are not listed as static figures on OpenAI’s own pricing page; the page renders pricing dynamically |
| Context window and maximum input size scale significantly by plan, confirmed directly on OpenAI’s own comparison table | Free and Go plans do not include GPT-5.6 Sol, the current flagship reasoning model, only limited access through Work and Codex |
| Deep Research, Projects, and scheduled tasks are included from Go or Plus upward, not reserved for the top tier | No SSO, SCIM, admin console, or compliance certifications on any individual plan; these require Business or Enterprise |
| Pro removes most usage caps entirely, described as “unlimited subject to abuse guardrails” rather than a fixed higher quota | Business plans require a minimum of 2 users, so solo professionals needing admin features must use an individual plan instead |
| Nonprofits can access up to a 75% discount on Business or Enterprise plans, per OpenAI’s own FAQ | “Unlimited” usage on Pro is explicitly subject to OpenAI’s abuse guardrails and reasonable-use policy, not a hard guarantee |
Pricing
| Plan | Price |
|---|---|
| Free | $0/month |
| Go | See official pricing page for current rate |
| Plus | See official pricing page for current rate |
Pricing verified on July 30, 2026: https://chatgpt.com/pricing/. Note: exact monthly prices for Go, Plus, Pro, and Business did not render as static figures on OpenAI’s pricing page at the time of this check; visit the link directly for current rates.
Platform Availability
Web | iOS | Android | macOS | Windows | API
Best For
Individuals | Students | Developers | Teams and enterprises
Frequently Asked Questions
Is ChatGPT free to use?
Yes. The Free plan is $0 per month with limited access to GPT-5.5 Instant, messages, uploads, and context, according to OpenAI’s official pricing page.
What is the difference between Plus and Pro?
Pro includes everything in Plus with most usage caps removed, plus GPT-5.6 Sol Pro reasoning, maximum Codex tasks, and unlimited image creation, according to OpenAI’s official plan comparison table.
Does every ChatGPT plan include Codex?
Yes, at different usage levels. Free and Go include limited Codex access, Plus includes expanded usage, and Pro includes maximum Codex tasks, per OpenAI’s official pricing page.
How many users does a Business plan require?
ChatGPT Business plans are available starting at 2 users, according to OpenAI’s official FAQ; Enterprise pricing requires contacting sales directly.
How does ChatGPT differ from Claude?
ChatGPT bundles its Codex coding agent into every plan, including Free, under a credit-based usage system, while Claude bundles its own coding agent, Claude Code, only into paid plans starting at Pro, sharing one usage pool with chat.
Similar Tools in This Directory
Also in this directory: Claude by Anthropic, coding agent bundled into every paid plan | Google Gemini AI, multimodal assistant integrated into Google Workspace | Meta AI, free assistant built into Facebook, Instagram, WhatsApp | Perplexity AI, cited-answer research engine | Grok by xAI, real-time X and web search built into chat | Kimi AI, Moonshot’s agentic workspace with a free tier | GLM AI, Zhipu’s free chat backed by open models
Visit Official Website
Date Verified: July 30, 2026. Updated July 30, 2026: Initial profile published.
Source: https://chatgpt.com/pricing/
