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claude-sonnet-4-5 Robot

claude-sonnet-4-5

Sonnet 4.5 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with memory, polished document creation, and confident computer use for web QA and workflow automation.

Input Balance $2.54 / 1M tokens, Output Cost $12.75 / 1M tokens

Input

No template available.
You can add a prompt template in the admin panel.

Output

Anthropic Claude 4.5 Sonnet Documentation

Claude 4.5 Sonnet is Anthropic’s most capable Sonnet-class model, offering a powerful combination of low-latency high throughput and frontier intelligence. Built for stateful agentic workflows, iterative development, and desktop automation, it maintains precise logical execution and exceptional contextual memory across complex, multi-step professional tasks.

Key Capabilities

  • 1,000,000 Token Context Window: Natively ingests entire system repositories, massive legacy codebases, or extensive technical frameworks in a single interaction.
  • Stateful Project Management with Memory: Retains operational context and project memory over extended sessions, tracing structural dependencies without conversational drift.
  • Dual-Mode Inference & Extended Thinking: Features a dedicated reasoning mode that allows the model to plan, self-correct, and map complex architectures in an internal scratchpad before outputting results.
  • Advanced Computer Use & Browser Automation: Confidently interacts with desktop environments, browsers, and spreadsheet software to orchestrate end-to-end web QA, data extraction, and workflow automation.
  • High-Throughput Parallel Execution: Optimizes real-time engineering pipelines with low-latency generation and support for parallel tool calling, minimizing asynchronous task overhead.

Request Parameters

To interact with this model via an OpenAI-compatible gateway or OpenRouter endpoint:

Parameter Type Required Description
model string Yes Use "claude-sonnet-4-5" .
messages array Yes Array of standard conversation objects (role/content) supporting multi-modal payloads.
max_tokens integer No Limits generation length. Supports a massively expanded maximum output of up to 64,000 tokens.
temperature float No Recommended: 0.0 or 0.2 for deterministic coding and infrastructure logic; 0.7 for document creation.

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