Grok 4.5 vs GPT-5.5

A side-by-side comparison of Grok 4.5 and GPT-5.5 — intelligence, context, capabilities, and price.

Spec
Grok 4.5 logoGrok 4.5
GPT-5.5 logoGPT-5.5
Context window500K256K
Streaming
Reasoning
Tool use
Web search
Vision (image input)
Document input
Video
Audio
Grok 4.5 pricing
  • Input$0.02 / 1M tokens
  • Output$0.06 / 1M tokens
View Grok 4.5details →
GPT-5.5 pricing
  • Input$0.05 / 1M tokens
  • Output$0.3 / 1M tokens
View GPT-5.5details →
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Grok 4.5 vs GPT-5.5: FAQ

Is Grok 4.5 better than GPT-5.5?
xAI's smartest model, trained alongside Cursor for coding and agentic work. 500K context, always-on reasoning, live X knowledge, at a competitive price. OpenAI flagship. AA Intelligence Index v4.1 of 55 — the strongest all-round frontier model. The best choice depends on your workload — compare context window, capabilities, and price above, or try both on TryAI.
Which is cheaper, Grok 4.5 or GPT-5.5?
See the pricing rows above for live per-token or per-generation costs. TryAI bills both from one pay-as-you-go balance.