GPT-5.5 vs Gemini 3.1 Pro

A side-by-side comparison of GPT-5.5 and Gemini 3.1 Pro — intelligence, context, capabilities, and price.

Spec
GPT-5.5 logoGPT-5.5
Gemini 3.1 Pro logoGemini 3.1 Pro
Context window256K2M
Streaming
Reasoning
Tool use
Web search
Vision (image input)
Document input
Video
Audio
GPT-5.5 pricing
  • Input$0.05 / 1M tokens
  • Output$0.3 / 1M tokens
View GPT-5.5details →
Gemini 3.1 Pro pricing
  • Input$0.02 / 1M tokens
  • Output$0.12 / 1M tokens
View Gemini 3.1 Prodetails →
Try both on TryAI Browse all models

GPT-5.5 vs Gemini 3.1 Pro: FAQ

Is GPT-5.5 better than Gemini 3.1 Pro?
OpenAI flagship. AA Intelligence Index v4.1 of 55 — the strongest all-round frontier model. Google DeepMind frontier. 2M context, fully multimodal, best-value frontier tier at AA 57. The best choice depends on your workload — compare context window, capabilities, and price above, or try both on TryAI.
Which is cheaper, GPT-5.5 or Gemini 3.1 Pro?
See the pricing rows above for live per-token or per-generation costs. TryAI bills both from one pay-as-you-go balance.