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Claude Sonnet 4.6 Anthropic Legacy GPT-5.6 Terra OpenAI
Input $3.00 $2.00
Output $15.00 $12.00
Blended $6.00 $4.50
Context window 1M 1.05M
Max output No data 128k
Output speed 47.1 124.9
Quality 61.2 62
Reasoning 46.6 67.7
Coding 60.5 65.4
Value 2.5 3.4
Vision ✓ ✓
Reasoning ✓ ✓
Tool calling ✓ ✓
Structured output ✓ ✓
Prompt caching ✓ ✓
Batch API ✓ ✓
Licence Proprietary Proprietary
API model id claude-sonnet-4-6 gpt-5.6-terra

At a glance

Input price, per million tokens
  1. Claude Sonnet 4.6Anthropic$3.00
  2. GPT-5.6 TerraOpenAI$2.00
Output price, per million tokens
  1. Claude Sonnet 4.6Anthropic$15.00
  2. GPT-5.6 TerraOpenAI$12.00
Context window
  1. Claude Sonnet 4.6Anthropic1M
  2. GPT-5.6 TerraOpenAI1.05M

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