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Claude Sonnet vs Claude Opus

Detailed comparison of Claude Sonnet and Claude Opus AI models — pricing, context window, parameters, and more. Updated for 2026.

Claude Sonnet Models

ModelContextParametersInput PriceOutput PriceTier
Anthropic: Claude Sonnet 51000KN/A$2.00$10.00standard
Anthropic Claude Sonnet Latest1000KN/A$2.00$10.00standard
Anthropic: Claude Sonnet 4.61000KN/A$3.00$15.00premium
Anthropic: Claude Sonnet 4.51000KN/A$3.00$15.00premium
Anthropic: Claude Sonnet 4200KN/A$3.00$15.00premium

Claude Opus Models

ModelContextParametersInput PriceOutput PriceTier
Anthropic: Claude Opus 4.8 (Fast)1000KN/A$10.00$50.00premium
Anthropic: Claude Opus 4.81000KN/A$5.00$25.00premium
Anthropic: Claude Opus 4.7 (Fast)1000KN/A$30.00$150.00premium
Anthropic: Claude Opus Latest1000KN/A$5.00$25.00premium
Anthropic: Claude Opus 4.71000KN/A$5.00$25.00premium
Anthropic: Claude Opus 4.61000KN/A$5.00$25.00premium
Anthropic: Claude Opus 4.5200KN/A$5.00$25.00premium
Anthropic: Claude Opus 4.1200KN/A$15.00$75.00premium
Anthropic: Claude Opus 4200KN/A$15.00$75.00premium

Quick Verdict: Anthropic: Claude Sonnet 5 vs Anthropic: Claude Opus 4.8 (Fast)

Verdict computed from live catalog data (latest Claude Sonnet and Claude Opus models), so it stays current as providers update pricing and specs.

Claude Sonnet vs Claude Opus: Which AI is Better?

Choosing between Claude Sonnet and Claude Opus depends on your specific needs. Both are powerful AI models with different strengths. With CoreAI, you don't have to choose — you get access to both Claude Sonnet and Claude Opus, along with 300+ other AI models, all under one subscription.

Use CoreAI's Compare feature to send the same prompt to both Claude Sonnet and Claude Opus simultaneously and see their responses side-by-side. This is the best way to determine which AI model works better for your specific use case.

Frequently Asked Questions

Is Claude Sonnet better than Claude Opus?
Both Claude Sonnet and Claude Opus excel in different areas. The best way to compare them is to try both with the same prompt using CoreAI's side-by-side comparison feature.
Can I use both Claude Sonnet and Claude Opus in one app?
Yes! With CoreAI you can chat with both Claude Sonnet and Claude Opus, plus 300+ other AI models — all in one app with one subscription.
Which is cheaper, Claude Sonnet or Claude Opus?
Pricing varies by model variant. With CoreAI's subscription, you get bundled access to both at a fraction of the cost of separate subscriptions.
How do I compare Claude Sonnet and Claude Opus responses?
Use CoreAI's Compare feature to send the same prompt to both models and see responses side-by-side. Try it now in the web app.

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Compare Claude Sonnet vs Claude Opus Live

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