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Gemini 2.5 Flash vs GPT-4.5: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Gemini 2.5 Flash and GPT-4.5 across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGemini 2.5 FlashGPT-4.5
ProviderGoogleOpenAI
Input Price / 1M tokens$0.150$75.00
Output Price / 1M tokens$0.600$150.00
Context Window
1M
128K
Max Output Tokens
8,192
8,192
Arena ELO
1,270
1,290
Coding ELO
1,260
1,295
TTFT (ms)
150
150
Tokens/sec
100
100
MultimodalYesYes
JSON ModeYesYes
Function CallingYesYes
VisionNoYes
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 GPT-4.5

GPT-4.5 excels at multimodal, vision, general-purpose tasks.

Strengths:

  • Latest OpenAI model
  • Strong multimodal
  • Fast inference

Best for:

multimodalvisiongeneral-purpose

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