Claude

Claude is the AI assistant from Anthropic, available at claude.ai on web, iOS, Android, macOS and Windows. The current lineup on Anthropic's models overview is Claude Fable 5.1 for demanding reasoning and long-horizon agentic work, released September 1, 2026 at $10/$50 per million input/output tokens, Claude Opus 5.5 for long-running agentic coding and knowledge work, released September 22, 2026 at $4/$20, Claude Sonnet 5.5, released September 28, 2026 at $2/$10, and Claude Haiku 4.5 at $1/$5. Anthropic states that Opus 5.5 performs at the level of Fable 5.1 on most work and costs 40% less to run than Opus 5. Claude Opus 5, Claude Sonnet 5 and Claude Fable 5 remain active models. Fable 5 was originally launched June 9, 2026, suspended June 12 under a US government export control directive, and restored July 1 after the controls were lifted. Fable 5 includes safety classifiers that block certain cybersecurity and biology requests. Blocked requests return an error rather than a response and are not charged, and inputs and outputs from Fable 5 are retained for 30 days to support safety work. API users can opt in to automatic fallback to Claude Opus for blocked requests. Beyond chat, Claude includes agentic features. Research runs multi-step autonomous web investigations, and paid plans can hand off and schedule tasks. Projects offer persistent context, Memory enables cross-session recall, Skills are custom capabilities an organization can deploy, and connectors link Claude to external apps and tools, including remote servers over the Model Context Protocol. Artifacts and file creation run code and produce documents. Sub-products ship within the paid plans: Claude Code for agentic coding, Claude Cowork for knowledge work on the desktop, with web and mobile in beta, Claude Design with Slides and Docs for visual and document output, Claude Science for scientific work, Claude in Chrome as a browsing agent, and Claude for Microsoft 365, which covers Claude for Excel, Claude for PowerPoint, Claude for Word and, in beta, Claude for Outlook. @Claude, in beta for Team and Enterprise, lets users tag Claude in Slack threads. Claude Managed Agents, in beta on the Claude Platform, provides a harness for long-running agentic work. Anthropic reports that Claude wrote the commands for NASA's Perseverance rover on December 8 and 10, 2025, the first AI-planned drive on another planet. Claude connects to Gmail, Google Calendar, Google Drive and Slack through native connectors and to other services through MCP connectors, and Team and Enterprise admins control which remote and local connectors members can use. The models are also available through the Anthropic API and on Amazon Bedrock, Google Cloud Vertex AI and Microsoft Foundry. Pricing is public with a permanent free plan. Free ($0) covers chat on web, desktop and mobile, web search, file creation, code execution, memory, connectors and Artifacts. Pro costs $17/month billed annually ($200 up front) or $20 billed monthly and adds more usage, task hand-off and scheduling, Claude Design with Slides and Docs, Claude Code, Claude Science, Projects, more Claude models, and Claude in Chrome and Microsoft 365. Max starts at $100/month for 5x or 20x Pro usage, with higher output limits, early access to advanced features and priority access at high traffic times. Team, for 2 to 150 users, costs $20 per standard seat per month billed annually ($25 monthly) and $100 per premium seat ($125 monthly), adding Claude Cowork, enterprise search, SSO and central administration. Enterprise costs US$20 per seat per month billed annually plus usage at API rates and adds SCIM, audit logs, a Compliance API, custom data retention, network-level access control, IP allowlisting and a HIPAA-ready offering. API pricing is separate and per token. Anthropic's trust center lists SOC 2 Type 2, ISO 27001, ISO 42001, CSA STAR and NIST 800-171 for Claude Team, Claude Enterprise and the API, and HIPAA for Enterprise and the API but not Team. FedRAMP High is listed only for Claude for Government and for Claude on Amazon Bedrock in AWS GovCloud, not for the claude.ai plans. Consumer plans offer a model training opt-out, and Team and Enterprise content is not used for training by default. Claude is best for knowledge workers, researchers and developers who want one subscription covering chat, research, coding and office work, with connectors into their own tools. Anthropic's plan and product pages list no native image or video generation model, so teams that need generated images inside the same assistant should consider ChatGPT. Teams standardized on Google Workspace should consider Gemini, and organizations that want an assistant licensed and administered through Microsoft 365 should consider Microsoft 365 Copilot. Current state Q4 2026: Claude Sonnet 5.5 was released September 28, 2026 at $2/$10 per million tokens, six days after Claude Opus 5.5, the first model in the Claude 5.5 family, at $4/$20. Claude Fable 5.1 was released September 1, 2026. Claude Mythos 5.1 is available to vetted organizations through trusted access programs. Since September 16, 2026, Anthropic has been combining Claude Cowork and chat in one Claude app, rolling out on Pro and Max plans first, and it launched Claude Docs and Claude Slides the same day. Claude Design, Slides and Docs, Claude Managed Agents, @Claude in Slack and Claude for Outlook are in beta.