Who founded Anthropic?

Anthropic was founded in 2021 by Dario Amodei (CEO) and Daniela Amodei (President), both formerly at OpenAI, together with several researchers who left OpenAI with them. The founding thesis was that AI safety research needed its own lab.

What is constitutional AI?

Constitutional AI is Anthropic's alignment technique. Instead of training the model only from human feedback, a written 'constitution' of principles (drawn from sources like the UN Declaration of Human Rights) is used to teach the model to critique and improve its own outputs.

Anthropic has raised billions from Google, Amazon, Spark Capital, and others. Amazon is the largest single backer and AWS is Anthropic's primary cloud partner, mirroring OpenAI's relationship with Microsoft.

What is Claude's flagship model?

As of April 2026, Claude Opus 4.6 is the top-tier model. Claude Sonnet remains the default for most Pro users. Claude Haiku is the fast, cheap tier used in the API.

How much does Claude cost?

Claude Pro is $20/month. Claude Max 5x is $100/month. Claude Max 20x is $200/month. The Max tiers lift usage caps substantially for heavy users, particularly those running Claude Code.

Claude Code is Anthropic's official CLI for agentic coding workflows. It runs Claude in a terminal, reads and edits files, runs commands, and is a major reason developers choose the Claude Max 20x subscription.

Anthropic: Constitutional AI & Claude's Story

The lab that made safety its product

Anthropic is what happens when a group of senior OpenAI researchers decide that alignment research needs its own institution. Founded in 2021 by Dario and Daniela Amodei, Anthropic has grown in four years into a frontier lab that trades blow-for-blow with OpenAI and Google DeepMind — and into the company behind Claude, the model that a growing share of developers and writers prefer.

Founding timeline

2021 — Dario Amodei, Daniela Amodei, and ex OpenAI colleagues found Anthropic. Dario takes CEO; Daniela becomes President.
2022 — Early research publishes on “Constitutional AI” as an alternative to pure RLHF.
March 2023 — Claude launches to the public; Claude 2 follows in July.
2023 — Google and Amazon invest; AWS becomes primary cloud partner.
March 2024 — Claude 3 family ships (Haiku, Sonnet, Opus) and leapfrogs GPT-4 on several benchmarks.
June 2024 — Claude 3.5 Sonnet lands; Claude Pro tier matures.
2025 — Claude Code CLI ships; Claude Max tiers ($100 and $200) launch to handle heavy coding workloads.
2026 — Claude Opus 4.6 becomes flagship.

Leadership

Dario Amodei — CEO. Physics PhD, ex OpenAI VP of Research.
Daniela Amodei — President. Ex OpenAI VP of Safety and Policy.
Jared Kaplan — Co-founder and Chief Scientist; co-author of the original scaling-laws paper.

Flagship products

Claude.ai — the consumer chat product. Pro, Max 5x, Max 20x tiers.
Claude Opus 4.6 — flagship model, strongest on deep reasoning, long-form writing, and complex coding.
Claude Sonnet — default model; strong general-purpose and fast.
Claude Haiku — cheapest, fastest tier for API use.
Claude Code — terminal-based agent CLI.
Anthropic API — developer access; major enterprise customers include Notion, DuckDuckGo, and Quora.

Business model

Anthropic monetizes three ways:

Claude.ai consumer subscriptions — Pro, Max 5x, Max 20x.
API usage — priced per token; the volume line.
Enterprise deals and AWS co-selling — Amazon uses Claude in Bedrock and Alexa; Anthropic sells into the Fortune 500.

Anthropic has stayed more focused than OpenAI. There is no Sora analog, no consumer browser. The entire company points at frontier model quality and safety, with Claude Code as a narrow bet on developers.

What makes Anthropic distinct

Safety-first framing — constitutional AI, responsible scaling policy, published interpretability research.
Quality bias in models — Opus 4.6 is widely considered the best for long-form writing and complex reasoning.
Developer love — Claude Code, large context, and willingness to follow detailed instructions.
Focus — no video model, no browser; Anthropic ships fewer products of higher average quality.

Why this matters for picking a subscription

Choosing Claude Pro vs ChatGPT Plus is largely a choice between Anthropic’s product philosophy (fewer, better models; focus on reasoning and coding) and OpenAI’s (more surfaces, faster shipping, video included).

Claude Max 20x at $200 is specifically designed for developers who live inside Claude Code. If you are not a developer, Pro at $20 is almost certainly enough.