GPT-5.5 vs Grok 4.3

A side-by-side comparison of GPT-5.5 and Grok 4.3 — intelligence, context, capabilities, and price.

Spec
GPT-5.5 logoGPT-5.5
Grok 4.3 logoGrok 4.3
Context window256K1M
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 →
Grok 4.3 pricing
  • Input$0.0125 / 1M tokens
  • Output$0.025 / 1M tokens
View Grok 4.3details →
Try both on TryAI Browse all models

GPT-5.5 vs Grok 4.3: FAQ

Is GPT-5.5 better than Grok 4.3?
OpenAI flagship. AA Intelligence Index v4.1 of 55 — the strongest all-round frontier model. xAI flagship. Always-on reasoning, 1M context, live X knowledge — the cheapest frontier model. 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 Grok 4.3?
See the pricing rows above for live per-token or per-generation costs. TryAI bills both from one pay-as-you-go balance.