Claude Sonnet 4.5

64K context$0.30/M input$1.50/M output

anthropic/claude-sonnet-4-5-20250929

Description

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...

Quick Start

curl https://router.tangle.tools/v1/chat/completions \
  -H "Authorization: Bearer $TANGLE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "anthropic/claude-sonnet-4-5-20250929",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Modalities

Input: TextInput: ImageOutput: Text

Pricing

Input$0.30/M

Output$1.50/M

Context64K tokens

Model Info

ProviderAnthropic

IDanthropic/claude-sonnet-4-5-20250929

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