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Gemini 2.5 Pro vs Grok 3: Pricing, Benchmarks & Verdict (2026)

Verdict

Gemini 2.5 Pro is significantly cheaper at $1.25/$10.00 per million tokens vs $3.00/$15.00. Gemini 2.5 Pro is stronger for coding with a coding ELO of 1350 vs 1290. Gemini 2.5 Pro ranks higher overall with an Arena ELO of 1340 vs 1300. Gemini 2.5 Pro offers a larger 1049K context window vs 128K.

Side-by-Side Comparison

FeatureGemini 2.5 ProGrok 3
ProviderGooglexAI
Input Price / 1M tokens$1.25$3.00
Output Price / 1M tokens$10.00$15.00
Context Window1.048576M128K
Max Output Tokens65,53616,384
Arena ELO1,3401,300
Coding ELO1,3501,290
TTFT (ms)400300
Tokens/sec7080
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 Grok 3

Choose Grok 3 when you need: strong benchmark performance, good reasoning capabilities, vision and multimodal support, fast for its capability tier. It excels at general-purpose, reasoning, coding tasks.

Strengths:

  • Strong benchmark performance
  • Good reasoning capabilities
  • Vision and multimodal support
  • Fast for its capability tier

Best for:

general-purposereasoningcoding

Frequently Asked Questions

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