Model comparison Synced Apr 6, 2026

Anthropic: Claude 3.7 Sonnet (thinking) vs Anthropic: Claude Opus 4.5

Side-by-side comparison of Anthropic: Claude 3.7 Sonnet (thinking) and Anthropic: Claude Opus 4.5. Compare pricing, context window, capabilities, and find out which is better for your workflow.

Verdict

marginal confidence

Anthropic: Claude 3.7 Sonnet (thinking) leads overall

Anthropic: Claude 3.7 Sonnet (thinking) leads in price, making it the stronger choice for most workflows. Anthropic: Claude Opus 4.5 remains a solid alternative depending on your specific needs.

Best for with Anthropic: Claude 3.7 Sonnet (thinking)

Budget-conscious workflows

Best for with Anthropic: Claude Opus 4.5

No clear advantages identified

Side-by-side

Technical specifications

	Anthropic: Claude 3.7 Sonnet (thinking)	Anthropic: Claude Opus 4.5
Provider	Anthropic	Anthropic
Input price	$3/M	$5/M
Output price	$15/M	$25/M
Context window	200K	200K
Max output	64K	64K
Capabilities	Tool useVisionReasoning	Tool useVisionReasoning
Released	Feb 24, 2025	Nov 24, 2025

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Scoring breakdown