Anthropic: Claude Opus 4.6 vs Anthropic: Claude Sonnet 4.5
Side-by-side comparison of Anthropic: Claude Opus 4.6 and Anthropic: Claude Sonnet 4.5. Compare pricing, context window, capabilities, and find out which is better for your workflow.
Verdict
moderate confidenceAnthropic: Claude Opus 4.6 and Anthropic: Claude Sonnet 4.5 are closely matched across pricing, context, and capabilities. Your choice depends on workflow-specific factors like provider ecosystem preference and existing integrations.
Best for with Anthropic: Claude Opus 4.6
Best for with Anthropic: Claude Sonnet 4.5
Side-by-side
Technical specifications
| Anthropic: Claude Opus 4.6 | Anthropic: Claude Sonnet 4.5 | |
|---|---|---|
| Provider | Anthropic | Anthropic |
| Input price | $5/M | $3/M |
| Output price | $25/M | $15/M |
| Context window | 1.0M | 1.0M |
| Max output | 128K | 64K |
| Capabilities | Tool useVisionReasoning | Tool useVisionReasoning |
| Released | Feb 4, 2026 | Sep 29, 2025 |
Scoring breakdown
How each dimension compares
Price
Anthropic: Claude Sonnet 4.5 leadsAnthropic: Claude Opus 4.6
$25/M tokens
Anthropic: Claude Sonnet 4.5
$15/M tokens
Context Window
Anthropic: Claude Opus 4.6
1.0M tokens
Anthropic: Claude Sonnet 4.5
1.0M tokens
Capabilities
Anthropic: Claude Opus 4.6
3/4
Anthropic: Claude Sonnet 4.5
3/4
Max Output
Anthropic: Claude Opus 4.6 leadsAnthropic: Claude Opus 4.6
128K tokens
Anthropic: Claude Sonnet 4.5
64K tokens
Recency
Anthropic: Claude Opus 4.6
Feb 2026
Anthropic: Claude Sonnet 4.5
Sep 2025
Related comparisons
Anthropic: Claude Opus 4.6 vs Google: Gemini 2.5 Pro
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs Google: Gemini 2.5 Pro Preview 06-05
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs Google: Gemini 2.5 Pro Preview 05-06
flagship tier · Cross-provider
Anthropic: Claude Opus 4.6 vs Google: Gemini 3.1 Pro Preview
flagship tier · Cross-provider