Last updated 08-11-2026
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ChatGPT
ChatGPT is OpenAI's conversational large language model you reach through chatgpt.com on the web, iOS, and Android. You type or speak a prompt, and it answers in plain language, follows up on earlier messages, and can draft code, summarize files, generate images, or run multi-step research from one thread.
Where raw API access leaves wiring to you, ChatGPT bundles frontier GPT-5.6 models, memory, custom GPTs, voice, and agent workflows like ChatGPT Work and Codex behind a single login. The trade-off is less control over model parameters and tighter usage caps on Free and Go than you'd get calling the API directly.
It fits students drafting essays, developers debugging code, marketers shaping campaigns, and business teams that want shared workspaces with admin controls. OpenAI also publishes ChatGPT Business and Enterprise tiers with SSO, unified billing, and policies that keep workspace data out of model training.
Free tier includes unlimited text chats with GPT-5.6 Luna, with limits on uploads, image generation, voice, and deep research
Plus unlocks custom GPTs, scheduled tasks, projects, and expanded access to GPT-5.6 reasoning models
Pro offers 5x or 20x more usage plus GPT-5.6 Sol Pro for maximum reasoning and Codex workloads
ChatGPT Work turns a stated goal into a plan, gathers context, and checks in when your approval is needed
Codex helps teams build, debug, and ship code inside the same ChatGPT workspace
Runs on web, iOS, and Android with voice chat, file uploads, memory, search, and data analysis tools
Free tier keeps unlimited GPT-5.6 Luna text chats without a credit card.
Plus and Pro add custom GPTs, projects, scheduled tasks, and expanded reasoning models.
ChatGPT Work and Codex extend chat into multi-step deliverables and coding workflows.
Apps on web, iOS, and Android share chat history and core tools across devices.
Free and Go cap uploads, image generation, voice, deep research, and Codex usage.
Go may show ads, per OpenAI's pricing page.
Go, Plus, and Pro list monthly billing on chatgpt.com/pricing without public dollar amounts in the fetched page.
OpenAI's launch notes warn ChatGPT can sound confident while returning incorrect answers.
Is ChatGPT free to use?
Yes. ChatGPT offers a Free plan with unlimited text chats on GPT-5.6 Luna, though uploads, image generation, voice, deep research, memory, Codex, and ChatGPT Work access stay limited on that tier. Paid Go, Plus, Pro, Business, and Enterprise plans expand those limits.
What ChatGPT plans are available?
ChatGPT sells individual Free, Go, Plus, and Pro plans, plus Business and Enterprise workspace tiers. OpenAI's pricing page lists Go, Plus, and Business as monthly subscriptions and Business and Enterprise as annual options, all priced per user per month.
Which models does ChatGPT include?
ChatGPT's plan comparison lists GPT-5.6 Sol, GPT-5.6 Sol Pro, GPT-5.6 Terra, GPT-5.6 Luna, and GPT-5 Thinking Mini across tiers. Free text chats use GPT-5.6 Luna, while Plus and Pro unlock advanced GPT-5.6 reasoning models with higher usage limits.
Does ChatGPT have mobile apps?
Yes. ChatGPT's pricing comparison shows access on web, iOS, and Android for every individual plan. Plus and Pro expand ChatGPT Work to desktop, web, and mobile, not just the limited desktop access on Free.
What is ChatGPT Work?
ChatGPT Work is an agent-style workflow inside ChatGPT where you give a goal, it gathers context, builds a plan, completes tasks, and pauses for your input or approval. OpenAI positions it for teams on Business plans that need finished deliverables, not just chat replies.
Does ChatGPT Business train on my data?
No. ChatGPT Business states that your data is never used for training OpenAI models. The workspace adds encryption, SSO, multi-factor authentication, and support for privacy laws such as GDPR and CCPA.
Can I build custom GPTs in ChatGPT?
Yes. ChatGPT Plus and Pro include creating, sharing, and using custom GPTs, plus projects and scheduled tasks. Business and Enterprise plans add workspace sharing controls, GPT analytics, and admin management for those custom assistants.