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Gemini 1.5 Flash vs Gemini 2.5 Pro: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Gemini 1.5 Flash and Gemini 2.5 Pro across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGemini 1.5 FlashGemini 2.5 Pro
ProviderGoogleGoogle
Input Price / 1M tokens$0.075$1.25
Output Price / 1M tokens$0.300$10.00
Context Window
1M
1.048576M
Max Output Tokens
8,192
65,536
Arena ELO
1,190
1,430
Coding ELON/A1,430
TTFT (ms)
150
400
Tokens/sec
100
70
MultimodalYesYes
JSON ModeYesYes
Function CallingYesYes
VisionNoYes
When to Use Gemini 1.5 Flash

Gemini 1.5 Flash excels at multimodal, fast-inference, cost-effective tasks.

Strengths:

  • Super cheap
  • 1M context window
  • Fast multimodal processing

Best for:

multimodalfast-inferencecost-effective
When to Use Gemini 2.5 Pro

Gemini 2.5 Pro excels at coding, reasoning, long-context, multimodal tasks.

Strengths:

  • 1M token context window
  • Excellent reasoning capabilities
  • Strong coding performance
  • Native multimodal support

Best for:

codingreasoninglong-contextmultimodal

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