Claude
Anthropic's assistant for deep analysis, long documents, and serious coding work.
Claude pairs Anthropic's current model family — Opus 5 with a 1M-token context window and 128K output, alongside Sonnet 5 and Haiku 4.5 — with a work-first product surface: Claude Code in the terminal, Cowork for agentic office tasks, plus Design and Science workspaces. It reads and reasons over book-length material better than it performs tricks; there is no consumer image generator and no viral gimmick, which tells you exactly who Anthropic thinks the customer is.
Best for
Analysts, writers, and developers who live in long documents and large codebases — Opus 5's 1M-token window takes an entire repository or a discovery file in one pass. Teams that want terminal-native agentic coding buy it for Claude Code.
Against ChatGPT, Claude wins on prose quality and long-document reasoning and loses on breadth — no image generation, a thinner connector ecosystem, no equivalent consumer voice product. Against Gemini, it competes on model quality without a bundled-storage sweetener. Claude Code has become the sharpest edge: a terminal-native coding agent that rivals now imitate rather than ignore.
Core features
Long-context work
Opus 5 accepts up to 1M tokens of input with 128K-token output — entire repositories, legal files, or a year of reports in a single conversation.
Writing and reasoning
Adaptive thinking is on by default with a five-level effort setting, so the model spends reasoning time in proportion to the problem instead of a fixed depth.
Developer access
The same models via Anthropic's API, plus Claude Code — the terminal-native agentic coding tool included from the Pro tier up.
Pros
- + Best-in-class long-document capability: Opus 5's 1M-token context and 128K output handle full codebases and discovery-sized files in one pass
- + Writing that needs less editing — the default output is closer to publishable prose than ChatGPT's or Gemini's
- + Claude Code and Cowork turn the subscription into an agent platform for real work, not just a chat window
Watchouts
- - Session and weekly usage caps bite heavy users; daily Claude Code work effectively requires a $100+ Max plan
- - No image generation and a thinner integration ecosystem than ChatGPT or Microsoft-bundled Copilot
Power List links
People behind Claude
Alternatives
ChatGPT
A general-purpose AI assistant for writing, research, coding, analysis, and everyday work.
Gemini
Google's assistant woven into Gmail, Workspace, Android, and Search — and priced to bundle.
Perplexity
An answer engine that shows its sources — AI search, deep research, and the Comet browser.
Frequently asked
What is Claude?
Anthropic's assistant for deep analysis, long documents, and serious coding work.
Who builds Claude?
Claude is built by Anthropic.
How much does Claude cost?
Claude uses freemium. Current tiers: Free · $20/mo Pro ($17 annual) · $100–$200/mo Max · $25/user Team. Check the official site before buying — AI pricing changes often.