GitHub[220K]Try OpenCode

Compare AI models: Claude Opus 5.5 vs Claude Sonnet 4

  1. Claude Opus 5.5AnthropicHollow points use fallbacks · hover for details
  2. Claude Sonnet 4AnthropicHollow points use fallbacks · hover for details
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Claude Opus 5.5100/10075/1008/10081/10050/10050/100 — Tool calling supported; no comparable benchmark
Claude Sonnet 450/100 — Reasoning supported; no comparable benchmark62/10010/10047/10050/10050/100 — Tool calling supported; no comparable benchmark
Overview
Author
Context length
1M
200K
Reasoning
True
True
Input modalities
Text, Image, Pdf
Text, Image, Pdf
Output modalities
Text
Text
Providers
Pricing
Input
$4.00/ 1M
$3.00/ 1M
Output
$20/ 1M
$15/ 1M
Cached input
$0.20/ 1M
$0.30/ 1M
MomentumLast 2 mo
Unique users
No usage
0
Completed sessions
No usage
1
Token share
No usage
0%
Tokens
No usage
00%
No trend data
No trend data
RetentionWeek 1
Returning users
Pending
Pending

Related comparisons. Other model pairs to check.