Anthropic

Claude Sonnet 4.5

anthropic/claude-sonnet-4.5

JSON

Specification

Published by the vendor; the platform bills at the target's declared price.

Claude Sonnet 4.5

reasoning tools

Anthropic anthropic/claude-sonnet-4.5

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...

Input $/1M: $3.00
Output $/1M: $15.0
Context: 1M
Max output: 64K
Released: Sep 29, 2025
Modalities: textimagefile

Intelligence index-

Coding index52

Agentic index-

Cached input reads $0.30 per 1M

On this deployment

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Not routable here yet

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targets.yamlyaml

# targets.yaml - declare a target that runs Claude Sonnet 4.5
targets:
  - id: claude-sonnet-4-5
    kind: llm
    name: Claude Sonnet 4.5
    metadata:
      model: anthropic/claude-sonnet-4.5          # links the target to this catalogue entry
    capabilities:
      domains: [general]
      supports_tools: true
      context_window: 1000000
    cost:
      usd_per_1k_tokens: 0.009000

Price among Anthropic models

Input list price per million tokens; Claude Sonnet 4.5 is the 6th cheapest of 13 listed.

More from Anthropic

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