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Claude Sonnet 5.5 Anthropic GPT-5.2 OpenAI Legacy
Input $2.00 $1.75
Output $10.00 $14.00
Blended $4.00 $4.81
Context window 1M 400k
Max output 128k 128k
Output speed 133.8 74.5
Quality 64.9 79.8
Reasoning 55 64
Coding 61 63.2
Value 4 4.1
Vision ✓ ✓
Reasoning ✓ ✓
Tool calling ✓ ✓
Structured output ✓ ✓
Prompt caching ✓ ✓
Batch API ✓ ✓
Licence Proprietary Proprietary
API model id claude-sonnet-5-5 gpt-5.2

At a glance

Input price, per million tokens
  1. Claude Sonnet 5.5Anthropic$2.00
  2. GPT-5.2OpenAI$1.75
Output price, per million tokens
  1. Claude Sonnet 5.5Anthropic$10.00
  2. GPT-5.2OpenAI$14.00
Context window
  1. Claude Sonnet 5.5Anthropic1M
  2. GPT-5.2OpenAI400k

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