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Gemini 2.0 Flash Thinking vs GPT-4.5: Pricing, Benchmarks & Verdict (2026)

Pricing verified Apr 8, 2026

⚡ Quick Answer

Compare Gemini 2.0 Flash Thinking and GPT-4.5 across pricing, benchmarks, and capabilities.

Updated: April 8, 2026 · ✓ Pricing verified

Side-by-Side Comparison

FeatureGemini 2.0 Flash ThinkingGPT-4.5
ProviderGoogleOpenAI
Input Price / 1M tokens$0.00$75.00
Output Price / 1M tokens$0.00$150.00
Context Window
32K
128K
Max Output Tokens
16,384
8,192
Arena ELO
1,280
1,290
Coding ELO
1,270
1,295
TTFT (ms)
150
150
Tokens/sec
100
100
MultimodalNoYes
JSON ModeYesYes
Function CallingYesYes
VisionNoYes
When to Use Gemini 2.0 Flash Thinking

Gemini 2.0 Flash Thinking excels at reasoning, general-purpose tasks.

Strengths:

  • Free reasoning model
  • Strong math & logic
  • Extended thinking

Best for:

reasoninggeneral-purpose
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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