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Claude Opus 5.5 Anthropic GPT-5.6 Terra OpenAI
Input $4.00 $2.00
Output $20.00 $12.00
Blended $8.00 $4.50
Context window 1M 1.05M
Max output 128k 128k
Output speed 96 124.9
Quality 70.5 62
Reasoning 61.4 67.7
Coding 66.9 65.4
Value 2.2 3.4
Vision ✓ ✓
Reasoning ✓ ✓
Tool calling ✓ ✓
Structured output ✓ ✓
Prompt caching ✓ ✓
Batch API ✓ ✓
Licence Proprietary Proprietary
API model id claude-opus-5-5 gpt-5.6-terra

At a glance

Input price, per million tokens
  1. Claude Opus 5.5Anthropic$4.00
  2. GPT-5.6 TerraOpenAI$2.00
Output price, per million tokens
  1. Claude Opus 5.5Anthropic$20.00
  2. GPT-5.6 TerraOpenAI$12.00
Context window
  1. Claude Opus 5.5Anthropic1M
  2. GPT-5.6 TerraOpenAI1.05M

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