Model Comparator

Compare up to four models using the same criteria.

Claude Opus 5.5 (Xhigh, Default Fallback)
Anthropic
Claude Sonnet 5.5 (Max, Default Fallback)
Anthropic

Differences only

✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.

Model Comparator
Metrics	Claude Opus 5.5 (Xhigh, Default Fallback) Anthropic	Claude Sonnet 5.5 (Max, Default Fallback) Anthropic
Intelligence	56	56
Speed	75.7 t/s	Best: 129 t/s
TTFT	Best: 145 s	446 s
Input · $ / 1M tokens	$4×2 relative to the lowest price among the compared models	Best: $2
Output · $ / 1M tokens	$20×2 relative to the lowest price among the compared models	Best: $10
Context window	1M	1M
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	Best: $3.46	$5.46×1.6 relative to the lowest price among the compared models

Intelligence

Claude Opus 5.5 (Xhigh, Default Fallback): 56
Claude Sonnet 5.5 (Max, Default Fallback): 56

Speed

Claude Opus 5.5 (Xhigh, Default Fallback): 75.7 t/s
Claude Sonnet 5.5 (Max, Default Fallback): Best: 129 t/s

TTFT

Claude Opus 5.5 (Xhigh, Default Fallback): Best: 145 s
Claude Sonnet 5.5 (Max, Default Fallback): 446 s

Input · $ / 1M tokens

Claude Opus 5.5 (Xhigh, Default Fallback): $4×2 relative to the lowest price among the compared models
Claude Sonnet 5.5 (Max, Default Fallback): Best: $2

Output · $ / 1M tokens

Claude Opus 5.5 (Xhigh, Default Fallback): $20×2 relative to the lowest price among the compared models
Claude Sonnet 5.5 (Max, Default Fallback): Best: $10

Context window

Claude Opus 5.5 (Xhigh, Default Fallback): 1M
Claude Sonnet 5.5 (Max, Default Fallback): 1M

Reasoning

Claude Opus 5.5 (Xhigh, Default Fallback): Yes
Claude Sonnet 5.5 (Max, Default Fallback): Yes

Open weights

Claude Opus 5.5 (Xhigh, Default Fallback): No
Claude Sonnet 5.5 (Max, Default Fallback): No

Cost / task

Claude Opus 5.5 (Xhigh, Default Fallback): Best: $3.46
Claude Sonnet 5.5 (Max, Default Fallback): $5.46×1.6 relative to the lowest price among the compared models

Each reasoning level remains a separate configuration.

Score and cost

Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.

Claude Opus 5.5 (Xhigh, Default Fallback)56 · $3.46
Claude Sonnet 5.5 (Max, Default Fallback)56 · $5.46