token.app › Compare › GPT-5.5 Pro (batch) vs Grok 4.5

GPT-5.5 Pro (batch) vs Grok 4.5

Grok 4.5 is 11× cheaper per token on a blended 3:1 basis. GPT-5.5 Pro (batch) accepts the larger context window (1.1M).

Head to head
Blended price uses a 3:1 input:output mix
GPT-5.5 Pro (batch)Grok 4.5
ProviderOpenAIxAI
Input $/1M$15.00$2.00
Output $/1M$90.00$6.00
Blended $/1M$33.75$3.00
Context window1.1M500K
Max output128K—
ReleasedApr 2026Jul 2026
LicenceProprietaryProprietary
Choose GPT-5.5 Pro (batch) if…
  • Larger context window (1.1M)
Choose Grok 4.5 if…
  • Costs less per token — $3.00 vs $33.75 blended
  • Newer model (released Jul 2026)
FAQ
Which is better, GPT-5.5 Pro (batch) or Grok 4.5?
We do not hold independently-run benchmark scores covering both GPT-5.5 Pro (batch) and Grok 4.5, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-5.5 Pro (batch) cheaper than Grok 4.5?
Grok 4.5 is cheaper: $3.00 versus $33.75 per million tokens blended at 3:1 input:output. Input alone: $15.00 vs $2.00. Output alone: $90.00 vs $6.00.
What context windows do GPT-5.5 Pro (batch) and Grok 4.5 have?
GPT-5.5 Pro (batch): 1,050,000 tokens. Grok 4.5: 500,000 tokens.
Who makes GPT-5.5 Pro (batch) and Grok 4.5?
GPT-5.5 Pro (batch) is made by OpenAI. Grok 4.5 is made by xAI.
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