LLMversus

Claude 3.5 Sonnet vs GPT-4o: Pricing, Benchmarks & Verdict (2026)

Pricing verified Sep 14, 2026By LLMversusUpdated September 17, 2026View methodology

⚡ Quick Answer

Compare Claude 3.5 Sonnet and GPT-4o across pricing, benchmarks, and capabilities.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude 3.5 SonnetGPT-4o
ProviderAnthropicOpenAI
Input Price / 1M tokens$3.00$2.50
Output Price / 1M tokens$15.00$10.00
Context Window
200K
128K
Max Output Tokens
8,192
16,384
Arena ELO
1,270
1,162
Coding ELO
1,300
1,162
TTFT (ms)
150
230
Tokens/sec
100
95
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 GPT-4o

GPT-4o excels at general-purpose, multimodal, function-calling tasks.

Strengths:

  • Fast response times
  • Strong multimodal capabilities
  • Code execution support

Best for:

general-purposemultimodalfunction-calling

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