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Gemini 1.5 Flash vs o4-mini: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Gemini 1.5 Flash and o4-mini across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGemini 1.5 Flasho4-mini
ProviderGoogleOpenAI
Input Price / 1M tokens$0.075$0.500
Output Price / 1M tokens$0.300$2.00
Context Window
1M
128K
Max Output Tokens
8,192
32,768
Arena ELO
1,190
1,260
Coding ELON/A1,270
TTFT (ms)
150
180
Tokens/sec
100
105
MultimodalYesNo
JSON ModeYesYes
Function CallingYesYes
VisionNoNo
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 o4-mini

o4-mini excels at general-purpose, reasoning, coding tasks.

Strengths:

  • Affordable
  • Fast
  • Good reasoning

Best for:

general-purposereasoningcoding

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