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Anthropic

Creator of Claude Opus 4.5 (Nov 24, 2025) - tops SWE-bench Verified. Offers Claude AI, Claude Code, and API with endless chat, advanced tool use, Claude for Chrome/Excel. 200K-1M context windows. Most robustly aligned frontier models for coding, agents, and complex reasoning.

Founded 2021
Foundation Models
Developer Tools
Consumer AI
Both
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Models from Anthropic
4 models
Language models and AI systems created by this company
Claude Opus 4.5
Premium
1M tokens•$5.00/$25.00
  • • Tops SWE-bench Verified
  • • 10.6% better than Sonnet 4.5
  • • Best for agents & coding
Claude Opus 4.1
Premium
1M tokens•$15.00/$75.00
  • • Best coding (72.5% SWE-bench)
  • • Long-running tasks
  • • Agent workflows
Claude Sonnet 4.5
Mid-tier
1M tokens•$3.00/$15.00
  • • Best coding/agents
  • • 72.7% SWE-bench
  • • 90% cache savings
Claude Haiku 4.5
Mid-tier
200K tokens•$1.00/$5.00
  • • Fastest
  • • Near Sonnet quality
  • • 90% cache savings
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Tools from Anthropic
Discover the AI tools and products you can use from this company
Claude
AI Assistants
Advanced AI assistant now featuring Claude Opus 4.5 (Nov 24, 2025) - best-in-class for coding and autonomous tasks. Includes endless chat with automatic context compression, Claude for Chrome extension, Claude for Excel integration, extended thinking mode, Artifacts, and computer use. 200K-1M context window with built-in web search.
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Claude Code
Code Development
Agentic coding assistant powered by Claude Opus 4.5 (Nov 24, 2025). Runs in browser, desktop (VS Code/JetBrains), and iOS. Enhanced Plan Mode asks clarifying questions upfront. Handles complete software engineering workflows with GitHub integration, parallel task execution, and automatic PR creation. 90% of Claude Code itself is written by AI.
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Anthropic API
LLM APIs & Platforms
Claude API now with Opus 4.5 (Nov 24, 2025) - best-in-class for coding and agents. Features advanced tool use (tool search, programmatic calling), extended thinking, prompt caching (90% savings), computer use, and 200K-1M context. Access Opus 4.5, Sonnet 4.5, and Haiku 4.5 via REST API or SDKs with Message Batches API and effort parameter.
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