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Claude 3.5 Sonnet vs o3-mini: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Claude 3.5 Sonnet and o3-mini across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude 3.5 Sonneto3-mini
ProviderAnthropicOpenAI
Input Price / 1M tokens$3.00$1.10
Output Price / 1M tokens$15.00$4.40
Context Window
200K
128K
Max Output Tokens
8,192
65,536
Arena ELO
1,270
1,280
Coding ELO
1,300
1,285
TTFT (ms)
150
350
Tokens/sec
100
25
MultimodalYesNo
JSON ModeYesYes
Function CallingYesNo
VisionNoNo
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 o3-mini

o3-mini excels at reasoning, math, general-purpose tasks.

Strengths:

  • Strong reasoning
  • Good math skills
  • Affordable reasoning

Best for:

reasoningmathgeneral-purpose

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