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Claude Sonnet 4.5 Anthropic Deprecated Claude Sonnet 5.5 Anthropic
Input $3.00 $2.00
Output $15.00 $10.00
Blended $6.00 $4.00
Context window 200k 1M
Max output 64k 128k
Output speed No data 133.8
Quality No data 64.9
Reasoning No data 55
Coding No data 61
Value No data 4
Vision ✓ ✓
Reasoning ✓ ✓
Tool calling ✓ ✓
Structured output ✓ ✓
Prompt caching ✓ ✓
Batch API ✓ ✓
Licence Proprietary Proprietary
API model id claude-sonnet-4-5-20250929 claude-sonnet-5-5

At a glance

Input price, per million tokens
  1. Claude Sonnet 4.5Anthropic$3.00
  2. Claude Sonnet 5.5Anthropic$2.00
Output price, per million tokens
  1. Claude Sonnet 4.5Anthropic$15.00
  2. Claude Sonnet 5.5Anthropic$10.00
Context window
  1. Claude Sonnet 4.5Anthropic200k
  2. Claude Sonnet 5.5Anthropic1M

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