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Claude 3.5 Sonnet vs Claude Opus 4: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Claude 3.5 Sonnet and Claude Opus 4 across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude 3.5 SonnetClaude Opus 4
ProviderAnthropicAnthropic
Input Price / 1M tokens$3.00$5.00
Output Price / 1M tokens$15.00$25.00
Context Window
200K
200K
Max Output Tokens
8,192
32,000
Arena ELO
1,270
1,504
Coding ELO
1,300
1,504
TTFT (ms)
150
500
Tokens/sec
100
50
MultimodalYesYes
JSON ModeYesYes
Function CallingYesYes
VisionNoYes
When to Use Claude 3.5 Sonnet

Claude 3.5 Sonnet excels at coding, general-purpose, multimodal tasks.

Strengths:

  • Best coding
  • Large context
  • Strong reasoning

Best for:

codinggeneral-purposemultimodal
When to Use Claude Opus 4

Claude Opus 4 excels at coding, analysis, agents, complex-reasoning tasks.

Strengths:

  • Top-tier coding and reasoning
  • Excellent agentic capabilities
  • Strong instruction following
  • 200K context window

Best for:

codinganalysisagentscomplex-reasoning

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