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AI Services

ChatGPT

OpenAI

Official site

OpenAI's conversational AI assistant and the world's most widely used. A default first pick that covers writing, research, coding, and image generation, with switchable GPT-family models.

Models

GPT-4oGPT-5GPT-5.1o3

Pricing

  • FreeFree

    Limited access to GPT-5-family models, with capped image generation, search, and voice.

  • Plus$20/mo

    Unlocks top models, Deep Research, Sora, Codex, and most features. The standard pick for individuals.

  • Pro$200/mo

    Unlimited access to the best models plus Pro-only high-compute modes. For heavy users.

  • Business$25–30/user/mo

    Formerly Team. Admin console, no-training data protection, and workplace connectors.

  • EnterpriseContact sales

    For large orgs: SSO, audit logs, extended context, and more.

※ For reference as of January 2026. Prices and plans change often — always check the official site for the latest.

Key features

  • Codex (coding)

    A coding agent that runs in the cloud, CLI, and IDEs, handling tasks in parallel (Plus and up).

  • Tasks (scheduling)

    Scheduled and recurring runs — think “summarize the news every morning” — with reminders.

  • GPTs / apps (ex-plugins)

    Build and share purpose-built custom GPTs, and call third-party apps from inside a chat.

  • Deep Research

    Researches the web for minutes at a time and returns a long, cited report.

  • Agent mode

    Carries out multi-step work involving browsing and file creation, checking in as it goes.

  • Projects & memory

    Organize chats and files into projects; memory carries context across conversations.

  • Image generation & Sora (video)

    GPT Image for images and Sora for videos with audio (mostly on paid plans).

  • Advanced Voice

    Real-time voice conversations — handy for translation and speaking practice too.

  • For work (Business / Enterprise)

    No-training data protection, admin controls, and connector search over company data like Google Drive.

Tier lists featuring this service

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Arena benchmark standings

arena.ai (formerly LMArena) blind-battle results converted into tiers for reference. See each category page for the conversion rules

External benchmark composite (reference)