The AI Tokens

Gemini 3.1 Pro vs Gemini 2.5 Pro Comparison

Compare Google's latest Gemini models: 3.1 Pro Preview vs 2.5 Pro. Next-generation capabilities.

Quick Summary

Gemini 3.1 Pro offers enhanced multimodal understanding and agentic capabilities over 2.5 Pro.

Winner: Gemini 3.1 Pro Preview

Pricing Comparison

Gemini 3.1 Pro Preview

Input
$2/1M tokens
Output
$12/1M tokens

Gemini 2.5 Pro

Input
$1.25/1M tokens
Output
$10/1M tokens

Key Differences

  • Gemini 3.1 Pro is 60% more expensive for large contexts
  • Both have 2M context windows
  • Gemini 3.1 Pro has better agentic capabilities
  • Gemini 3.1 Pro includes thinking tokens in pricing
  • Gemini 2.5 Pro offers better value for basic tasks

Best Use Cases

Gemini 3.1 Pro Preview

  • Advanced multimodal applications
  • Agentic AI systems
  • Complex reasoning with thinking
  • Next-generation AI projects
  • Research and development

Gemini 2.5 Pro

  • Production applications
  • Cost-sensitive projects
  • Large document processing
  • Established workflows
  • Reliable performance needs

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