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    First steps

    Intro to ClaudeQuickstart

    Models & pricing

    Models overviewChoosing a modelWhat's new in Claude 4.5Migrating to Claude 4.5Model deprecationsPricing

    Build with Claude

    Features overviewUsing the Messages APIContext windowsPrompting best practices

    Capabilities

    Prompt cachingContext editingExtended thinkingStreaming MessagesBatch processingCitationsMultilingual supportToken countingEmbeddingsVisionPDF supportFiles APISearch resultsGoogle Sheets add-on

    Tools

    OverviewHow to implement tool useToken-efficient tool useFine-grained tool streamingBash toolCode execution toolComputer use toolText editor toolWeb fetch toolWeb search toolMemory tool

    Agent Skills

    OverviewQuickstartBest practicesUsing Skills with the API

    Agent SDK

    OverviewTypeScript SDKPython SDK

    Guides

    Streaming InputHandling PermissionsSession ManagementHosting the Agent SDKModifying system promptsMCP in the SDKCustom ToolsSubagents in the SDKSlash Commands in the SDKAgent Skills in the SDKTracking Costs and UsageTodo ListsPlugins in the SDK

    MCP in the API

    MCP connectorRemote MCP servers

    Claude on 3rd-party platforms

    Amazon BedrockVertex AI

    Prompt engineering

    OverviewPrompt generatorUse prompt templatesPrompt improverBe clear and directUse examples (multishot prompting)Let Claude think (CoT)Use XML tagsGive Claude a role (system prompts)Prefill Claude's responseChain complex promptsLong context tipsExtended thinking tips

    Test & evaluate

    Define success criteriaDevelop test casesUsing the Evaluation ToolReducing latency

    Strengthen guardrails

    Reduce hallucinationsIncrease output consistencyMitigate jailbreaksStreaming refusalsReduce prompt leakKeep Claude in character

    Administration and monitoring

    Admin API overviewUsage and Cost APIClaude Code Analytics API
    Console
    First steps

    Intro to Claude

    Claude is a highly performant, trustworthy, and intelligent AI platform built by Anthropic. Claude excels at tasks involving language, reasoning, analysis, coding, and more.
    The latest generation of Claude models:

    Claude Sonnet 4.5 - Our smartest model. Best for complex agents, coding, and most advanced tasks. Learn more.

    Claude Haiku 4.5 - Our fastest model with near-frontier intelligence. Learn more.

    Claude Opus 4.1 - Exceptional model for specialized tasks requiring advanced reasoning. Learn more.

    Looking to chat with Claude? Visit claude.ai!

    Get started

    If you’re new to Claude, start here to learn the essentials and make your first API call.

    Get started

    Set up your development environment for building with Claude.

    Learn about Claude

    Learn about the family of Claude models.

    Prompt Library

    Explore example prompts for inspiration.


    Develop with Claude

    Anthropic has best-in-class developer tools to build scalable applications with Claude.

    Developer Console

    Enjoy easier, more powerful prompting in your browser with the Workbench and prompt generator tool.

    API Reference

    Explore, implement, and scale with the Claude API and SDKs.

    Claude Cookbook

    Learn with interactive Jupyter notebooks that demonstrate uploading PDFs, embeddings, and more.


    Key capabilities

    Claude can assist with many tasks that involve text, code, and images.

    Text and code generation

    Summarize text, answer questions, extract data, translate text, and explain and generate code.

    Vision

    Process and analyze visual input and generate text and code from images.


    Support

    Help Center

    Find answers to frequently asked account and billing questions.

    Service Status

    Check the status of Anthropic services.

    • Get started
    • Develop with Claude
    • Key capabilities
    • Support
    © 2025 ANTHROPIC PBC

    Products

    • Claude
    • Claude Code
    • Max plan
    • Team plan
    • Enterprise plan
    • Download app
    • Pricing
    • Log in

    Features

    • Claude and Slack
    • Claude in Excel

    Models

    • Opus
    • Sonnet
    • Haiku

    Solutions

    • AI agents
    • Code modernization
    • Coding
    • Customer support
    • Education
    • Financial services
    • Government
    • Life sciences

    Claude Developer Platform

    • Overview
    • Developer docs
    • Pricing
    • Amazon Bedrock
    • Google Cloud’s Vertex AI
    • Console login

    Learn

    • Blog
    • Catalog
    • Courses
    • Connectors
    • Customer stories
    • Engineering at Anthropic
    • Events
    • Powered by Claude
    • Service partners
    • Startups program

    Company

    • Anthropic
    • Careers
    • Economic Futures
    • Research
    • News
    • Responsible Scaling Policy
    • Security and compliance
    • Transparency

    Help and security

    • Availability
    • Status
    • Support center

    Terms and policies

    • Privacy policy
    • Responsible disclosure policy
    • Terms of service: Commercial
    • Terms of service: Consumer
    • Usage policy

    Products

    • Claude
    • Claude Code
    • Max plan
    • Team plan
    • Enterprise plan
    • Download app
    • Pricing
    • Log in

    Features

    • Claude and Slack
    • Claude in Excel

    Models

    • Opus
    • Sonnet
    • Haiku

    Solutions

    • AI agents
    • Code modernization
    • Coding
    • Customer support
    • Education
    • Financial services
    • Government
    • Life sciences

    Claude Developer Platform

    • Overview
    • Developer docs
    • Pricing
    • Amazon Bedrock
    • Google Cloud’s Vertex AI
    • Console login

    Learn

    • Blog
    • Catalog
    • Courses
    • Connectors
    • Customer stories
    • Engineering at Anthropic
    • Events
    • Powered by Claude
    • Service partners
    • Startups program

    Company

    • Anthropic
    • Careers
    • Economic Futures
    • Research
    • News
    • Responsible Scaling Policy
    • Security and compliance
    • Transparency

    Help and security

    • Availability
    • Status
    • Support center

    Terms and policies

    • Privacy policy
    • Responsible disclosure policy
    • Terms of service: Commercial
    • Terms of service: Consumer
    • Usage policy
    © 2025 ANTHROPIC PBC