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Claude 3.5 Sonnet vs Claude Opus 4

Claude 3.5 SonnetClaude Opus 4
ProviderAnthropicAnthropic
Context Window200,000200,000
Release Date2024-06-202025-05-21
Input Price$3.00/ 1M tokens$15.00/ 1M tokens
Output Price$15.00/ 1M tokens$75.00/ 1M tokens
Best forcoding · writing · chatbot · analysiscomplex reasoning · research · long documents · expert systems

Capabilities

Claude 3.5 SonnetClaude Opus 4
Vision
Reasoning
Coding
Audio
Tools
Long Context

Ranking Comparison

Claude 3.5 SonnetClaude Opus 4
Overall78.444.8
Benchmark800
Capability85.785.7
Price Efficiency100100
Context100100

Overall = Benchmark 50% + Capability 20% + Price Efficiency 20% + Context 10%.

Benchmark Comparison

Claude 3.5 SonnetClaude Opus 4
Coding
Reasoning
Math
Vision

Price History

Claude 3.5 Sonnet

DateInputOutput
2026-08-11$3.00$15.00

/ 1M tokens

Claude Opus 4

DateInputOutput
2026-08-11$15.00$75.00

/ 1M tokens

Claude 3.5 Sonnet

Anthropic's flagship model known for strong coding and nuanced writing.

Claude Opus 4

Anthropic's most powerful model for complex tasks requiring deep reasoning.

Claude 3.5 Sonnet

Data Reliability

Benchmark · VerifiedOfficial · Verified

Data confidence: 90%

Claude Opus 4

Data Reliability

Benchmark · ExperimentalOfficial · Verified

Data confidence: 95%

Why compare these models?

These models are compared because:

  • • Same capability category

Choose Claude 3.5 Sonnet if:

  • • Higher overall score
  • • Lower input price

Choose Claude Opus 4 if:

  • • General purpose workloads

Frequently Asked Questions

Which model is better: Claude 3.5 Sonnet or Claude Opus 4?

Based on overall scores, Claude 3.5 Sonnet ranks higher (78.4 vs 44.8). See the comparison table for a full breakdown.

Which model is cheaper: Claude 3.5 Sonnet or Claude Opus 4?

Claude 3.5 Sonnet is cheaper: $3 vs $15 per 1M input tokens.

What are the capability differences between Claude 3.5 Sonnet and Claude Opus 4?

Claude 3.5 Sonnet and Claude Opus 4 support the same set of capabilities.