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Anthropic

Foundation Models

AI safety company and creator of the Claude AI assistant

Founded 2021San Francisco, CA, USA501–1,000 employeesfreemium · Free planFrom Free (Claude.ai); $20/month (Pro); API from $0.25/1M tokens (Claude 3 Haiku input)Verified · Sep 2026
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About Anthropic

Anthropic is an AI safety company focused on building reliable, interpretable, and steerable AI systems. It developed Claude, a family of large language models available via the Claude.ai interface and the Anthropic API. Anthropic pioneered Constitutional AI, a training approach aimed at making AI systems more helpful, harmless, and honest. Its research spans alignment, interpretability, and AI policy.

Editorial Assessment

Anthropic is an AI safety company that develops the Claude family of large language models, founded in 2021 by Dario Amodei, Daniela Amodei, and several colleagues who departed OpenAI. Anthropic's stated differentiation is a research-first approach to AI safety — it developed Constitutional AI (CAI) and Responsible Scaling Policy (RSP) as methodologies for building safer, more interpretable models. Claude 3.5 Sonnet, released mid-2024, became widely regarded as one of the best-performing models on coding and reasoning benchmarks. Claude.ai is the consumer product (Free, Pro at $20/month, Team at $25/user/month, Enterprise custom), while the Anthropic API serves developers building on the Claude model family. Claude's 200K context window — available across all paid tiers — is a meaningful advantage for long-document analysis, legal review, and codebase comprehension. The Claude API is also available through Amazon Bedrock and Google Vertex AI. Anthropic's Constitutional AI approach trains models to critique and revise their own outputs against a set of principles, which produces models that decline harmful requests more consistently than RLHF alone. Claude is widely used as the foundation for coding assistants (Cursor, Claude Code) and enterprise knowledge management. Unlike OpenAI, Anthropic has not released a consumer image generation product.

Strengths
  • 200K context window on all models enables full document, codebase, and long-conversation analysis
  • Constitutional AI training produces more predictable and consistent refusal behavior
  • Claude 3.5 Sonnet and Opus competitive on coding, analysis, and reasoning benchmarks
  • Available through Amazon Bedrock and Google Vertex AI for cloud-native enterprise deployment
  • Strong API documentation and system prompt controls for enterprise applications
  • Claude Code (CLI tool) for autonomous coding tasks
Limitations
  • No consumer image generation product (unlike OpenAI's DALL-E integration)
  • API rate limits on lower tiers restrict high-throughput production use cases
  • Free tier of Claude.ai limits daily message volume on more powerful models
  • Smaller ecosystem and fewer third-party integrations than OpenAI
  • No open-weight model releases (unlike Meta Llama)

Best For

Developers building coding assistants and code review tools on a capable API Enterprises needing long-document analysis with 200K context window Organizations prioritizing AI safety and predictable model behavior Teams using Amazon Bedrock or Google Vertex AI for managed AI deployment

Not Ideal For

Applications requiring image generation alongside text generation in one APIOrganizations needing self-hostable open-weight modelsVery high-throughput applications sensitive to API rate limits

Key Features

Claude 3.5 Sonnet and Opus models200K context windowConstitutional AI safety trainingClaude.ai web and mobile appsArtifacts for code and document generationProjects for multi-file context managementAmazon Bedrock and Google Vertex AI availabilityClaude Code CLI for autonomous coding

Who It's For

AI developers and engineersEnterprise knowledge management teamsLegal and financial document analysis teamsBusinesses building safety-critical AI applications

Industries Served

TechnologyHealthcareLegalFinanceEducation

Platforms

web ios api

Support

Documentation Enterprise support

Founders

  • Dario Amodei
  • Daniela Amodei
  • Chris Olah
  • Sam McCandlish
  • Jack Clark
  • Jared Kaplan
  • Tom Brown

Products & Tools

Claude.aiAI Assistant
Visit

AI assistant web and mobile app built on Claude models, with Free, Pro, Team, and Enterprise tiers offering increasing usage limits and organizational features.

freemium · Free planFrom Free; $20/month (Pro); $25/user/month (Team annual)
200K context windowArtifacts for code/docsProjectsFile analysisVision capabilities
Claude APIAI API
Visit

Developer API for Claude 3.5 Sonnet, Claude 3 Opus, Haiku, and future models with pay-as-you-go token pricing.

subscriptionFrom $0.25/1M input tokens (Claude 3 Haiku); $3/1M (Claude 3.5 Sonnet)
Claude 3.5 SonnetClaude 3 Opus200K contextTool use / function callingVision API

Sources & Verification

Last reviewed September 2026

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Anthropic FAQs

What is Claude?

Claude is Anthropic's family of AI assistants. Claude 3.5 Sonnet is designed for complex reasoning, coding, and nuanced conversation. Different tiers (Haiku, Sonnet, Opus) balance speed and capability.

How does Anthropic approach AI safety?

Anthropic developed Constitutional AI, a method for training AI models to behave helpfully, harmlessly, and honestly by having models critique and revise their own outputs based on a set of principles.

Tags

LLMAI SafetyClaudeConstitutional AIAPI Platform

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