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Claude Sonnet 4 vs o1: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Claude Sonnet 4 and o1 across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude Sonnet 4o1
ProviderAnthropicOpenAI
Input Price / 1M tokens$3.00$15.00
Output Price / 1M tokens$15.00$60.00
Context Window
200K
200K
Max Output Tokens
64,000
100,000
Arena ELO
1,280
1,310
Coding ELO
1,305
1,310
TTFT (ms)
320
500
Tokens/sec
78
20
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionYesNo
When to Use Claude Sonnet 4

Claude Sonnet 4 excels at coding, analysis, long-context, agents tasks.

Strengths:

  • Best-in-class coding performance
  • 200K context window
  • Excellent instruction following

Best for:

codinganalysislong-contextagents
When to Use o1

o1 excels at reasoning, coding, math tasks.

Strengths:

  • Best reasoning model
  • Code execution
  • Extended thinking

Best for:

reasoningcodingmath

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