Models from Partners and Community

• Developed and supported by external partners and community contributors.
• Diverse range of specialized models catering to niche or broad use cases.
• Typically validated by providers themselves, with integration guidelines provided by Azure.
• Community-driven innovation and rapid availability of cutting-edge models.
• Standard Azure AI integration, with support and maintenance managed by the respective providers.

Key capabilities

About this model

Key model capabilities

• Extended thinking: Extended thinking gives Claude enhanced reasoning capabilities for complex tasks.
• Image & text input: With strong vision capabilities, Claude Sonnet 4.5 can process images and return text outputs to analyze and understand charts, graphs, technical diagrams, reports, and other visual assets.
• Computer use: Claude Sonnet 4.5 is Anthropic's most accurate model for computer use, enabling developers to direct Claude to use computers the way people do.

Use cases

Key use cases

• Long-running agents: Power production-ready assistants for multi-step, real-time applications—from customer support automation to complex operational workflows that require peak accuracy, intelligence, and speed.
• Coding: Handle everyday development tasks with enhanced performance––or plan and execute complex software projects spanning hours or days––with the ability to save, maintain, and reference information across multiple sessions.
• Cybersecurity: Deploy agents that autonomously patch vulnerabilities before exploitation––shifting from reactive detection to proactive defense.
• Financial analysis: Conduct entry-level financial analysis, deliver advanced predictive analysis, or preemptively develop intelligent risk management strategies that leverage best-in-class domain knowledge.
• Computer use: Claude Sonnet 4.5 is Anthropic's most accurate model for computer use, enabling developers to direct Claude to use computers the way people do.
• Research: Perform focused analysis across multiple data sources, turning expert analysis into final deliverables. Ideal for complex problem solving, rapid business intelligence, and real-time decision support.

Out of scope use cases

Pricing

Technical specs

Training cut-off date

Input formats

Supported language

Sample JSON response

200:
{
  "content": [
    {
      "text": "Hi! My name is Claude.",
      "type": "text"
    }
  ],
  "id": "msg_013Zva2CMHLNnXjNJJKqJ2EF",
  "model": "claude-sonnet-4-5-20250929",
  "role": "assistant",
  "stop_reason": "end_turn",
  "stop_sequence": null,
  "type": "message",
  "usage": {
    "input_tokens": 31,
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0,
    "cache_creation": { "ephemeral_5m_input_tokens": 0, "ephemeral_1h_input_tokens": 0 },
    "output_tokens": 25,
    "service_tier": "standard",
    
  }
}

4XX:
{
  "error": {
    "message": "Invalid request",
    "type": "invalid_request_error"
  },
  "request_id": "<string>",
  "type": "error"
}

Model architecture

Long context

Optimizing model performance

Additional assets

• Claude Documentation : Visit Anthropic's Claude documentation for a wealth of resources on model capabilities, prompting techniques, use case guidelines, and more.
• Extended Thinking Guide : Understand how best to use extended thinking with Claude.
• Claude Prompting Resources : Check out Anthropic's prompting tools and guides to learn how to craft prompts that elicit more helpful, nuanced responses.
• Claude Cookbooks : Check out example code for a variety of complex tasks, such as RAG from various web sources, making SQL queries, function calling, multimodal prompting, and more.

Distribution channels

• Claude API: For developers interested in building agents, Sonnet 4.5 is available on the Claude Developer Platform.
• Claude Code: Use Sonnet 4.5 with Anthropic's industry-leading coding agent, Claude Code.

More information

Data handling