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Gemini 2.5 Pro vs GPT-4o: Pricing, Benchmarks & Verdict (2026)

Verdict

Gemini 2.5 Pro is stronger for coding with a coding ELO of 1350 vs 1265. GPT-4o is faster at 95 tokens/sec vs 70 tokens/sec. Gemini 2.5 Pro ranks higher overall with an Arena ELO of 1340 vs 1260. Gemini 2.5 Pro offers a larger 1049K context window vs 128K.

Side-by-Side Comparison

FeatureGemini 2.5 ProGPT-4o
ProviderGoogleOpenAI
Input Price / 1M tokens$1.25$2.50
Output Price / 1M tokens$10.00$10.00
Context Window1.048576M128K
Max Output Tokens65,53616,384
Arena ELO1,3401,260
Coding ELO1,3501,265
TTFT (ms)400230
Tokens/sec7095
MultimodalYesYes
JSON ModeYesYes
Function CallingYesYes
VisionYesYes
When to Use Gemini 2.5 Pro

Choose Gemini 2.5 Pro when you need: 1m token context window, excellent reasoning capabilities, strong coding performance, native multimodal support. It excels at coding, reasoning, long-context, multimodal tasks. It is also the more cost-effective option between the two. Its 1049K context window is larger, making it better for long-document processing.

Strengths:

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

Best for:

codingreasoninglong-contextmultimodal
When to Use GPT-4o

Choose GPT-4o when you need: fast response times, strong multimodal capabilities, code execution support. It excels at general-purpose, multimodal, function-calling tasks.

Strengths:

  • Fast response times
  • Strong multimodal capabilities
  • Code execution support

Best for:

general-purposemultimodalfunction-calling

Frequently Asked Questions

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