LLMversus

Claude 3.5 Sonnet vs Gemini 2.5 Flash: Pricing, Benchmarks & Verdict (2026)

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

⚡ Quick Answer

Compare Claude 3.5 Sonnet and Gemini 2.5 Flash across pricing, benchmarks, and capabilities.

Updated: September 14, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureClaude 3.5 SonnetGemini 2.5 Flash
ProviderAnthropicGoogle
Input Price / 1M tokens$3.00$0.300
Output Price / 1M tokens$15.00$2.50
Context Window
200K
1M
Max Output Tokens
8,192
8,192
Arena ELO
1,270
1,270
Coding ELO
1,300
1,260
TTFT (ms)
150
150
Tokens/sec
100
100
MultimodalYesYes
JSON ModeYesYes
Function CallingYesYes
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 Gemini 2.5 Flash

Gemini 2.5 Flash excels at multimodal, general-purpose, coding tasks.

Strengths:

  • Latest Gemini model
  • Improved reasoning
  • Strong multimodal

Best for:

multimodalgeneral-purposecoding

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