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Compare AI models: Claude Opus 5.5 vs Claude Sonnet 5.5

  1. Claude Opus 5.5AnthropicHollow points use fallbacks · hover for details
  2. Claude Sonnet 5.5Anthropic
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Claude Opus 5.5100/10075/1009/10082/10050/10050/100 — Tool calling supported; no comparable benchmark
Claude Sonnet 5.590/1000/10018/10082/10050/100100/100
Overview
Author
Context length
1M
1M
Reasoning
True
True
Input modalities
Text, Image, Pdf
Text, Image, Pdf
Output modalities
Text
Text
Providers
Pricing
Input
$4.00/ 1M
$2.00/ 1M
Output
$20/ 1M
$10/ 1M
Cached input
$0.20/ 1M
$0.10/ 1M
MomentumLast 2 mo
Unique users
No usage
No usage
Completed sessions
No usage
No usage
Token share
No usage
No usage
Tokens
No usage
No usage
No trend data
No trend data
RetentionWeek 1
Returning users
Pending
Pending

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