AI Services Directory

Chat / Assistant · Updated 2026-10-25

ChatGPT — what it is actually for

ChatGPT is OpenAI's assistant app for web, desktop, and mobile. One subscription covers text chat, image generation, voice, deep research, projects, and a limited or expanded amount of Codex coding work.

Short answer: use ChatGPT when you need drafting and editing text in a chat interface. It is a free tier + subscription service from OpenAI; the official pricing source is linked below.

Vendor
OpenAI
Category
Chat / Assistant
Pricing model
Free tier + subscription
Free option
Yes. The Free plan includes limited text, image, voice, research, and Codex usage.

What ChatGPT is used for

  • Drafting and editing text in a chat interface
  • Running deep-research reports that cite web sources
  • Generating and editing images from prompts

Source: official product page and official documentation.

Who ChatGPT is for

  • General knowledge work, writing, and research
  • Teams that want one assistant for text, images, voice, and research
  • Users who also want access to Codex for coding

Source: official documentation.

Who it is not for

  • Workloads that need a fixed per-token budget without a subscription
  • Deployments that require a self-hosted model

Source: documented plans, limits, and deployment model on the official product page.

Pricing

  • Free plan with limited messages and features.Source: chatgpt.com
  • Paid Go, Plus, Pro, Business, and Enterprise plans. Individual plans are billed per user per month; Business seats are billed monthly or annually.Source: chatgpt.com
  • Pro is offered at two usage levels; regional prices can differ from the US list price.Source: chatgpt.com

The official pricing page is the source of truth because prices and limits change by region and billing channel.

Full pricing page: https://chatgpt.com/pricing

Alternatives to ChatGPT

  • Claude — Assistant for long-document work, writing, and agentic coding with Claude Code.
  • Gemini — Google's assistant across the Gemini app, Google apps, Search, and the Gemini API.
  • Mistral Le Chat — European assistant and API platform with open-weight models and document AI.

Official sources

ChatGPT FAQ

Is ChatGPT free?

Yes. ChatGPT has a Free plan with limited messages and features. Paid plans add higher limits, advanced reasoning, expanded research, and more Codex usage.

Is ChatGPT the same as the OpenAI API?

No. ChatGPT is the consumer and business app. The OpenAI API is a separate, usage-based developer service billed per token, image, or audio unit.

What can I use instead of ChatGPT?

Alternatives in this directory include Claude, Gemini, and Mistral Le Chat. Each has a different pricing model and model family.

See also: compare all services by use case · about this directory.