LLMversus

Gemini 2.5 Flash vs Sonar Reasoning: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 20, 2026By LLMversusUpdated June 14, 2026View methodology

⚡ Quick Answer

Compare Gemini 2.5 Flash and Sonar Reasoning across pricing, benchmarks, and capabilities.

Updated: April 20, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGemini 2.5 FlashSonar Reasoning
ProviderGooglePerplexity
Input Price / 1M tokens$0.300$2.00
Output Price / 1M tokens$2.50$8.00
Context Window
1M
127K
Max Output Tokens
8,192
8,192
Arena ELO
1,270
1,240
Coding ELO
1,260
1,235
TTFT (ms)
150
150
Tokens/sec
100
100
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
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
When to Use Sonar Reasoning

Sonar Reasoning excels at reasoning, web-search tasks.

Strengths:

  • Reasoning + search
  • Fresh data
  • Good accuracy

Best for:

reasoningweb-search

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