token.app › Compare › GPT-4 Turbo Preview vs Grok 4.5

GPT-4 Turbo Preview vs Grok 4.5

Grok 4.5 is 5.0× cheaper per token on a blended 3:1 basis. Grok 4.5 accepts the larger context window (500K).

Head to head
Blended price uses a 3:1 input:output mix
GPT-4 Turbo PreviewGrok 4.5
ProviderOpenAIxAI
Input $/1M$10.00$2.00
Output $/1M$30.00$6.00
Blended $/1M$15.00$3.00
Context window128K500K
Max output4K—
ReleasedJan 2024Jul 2026
LicenceProprietaryProprietary
Choose GPT-4 Turbo Preview if…
  • No clear advantage on the data we hold.
Choose Grok 4.5 if…
  • Costs less per token — $3.00 vs $15.00 blended
  • Larger context window (500K)
  • Newer model (released Jul 2026)
FAQ
Which is better, GPT-4 Turbo Preview or Grok 4.5?
We do not hold independently-run benchmark scores covering both GPT-4 Turbo Preview and Grok 4.5, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-4 Turbo Preview cheaper than Grok 4.5?
Grok 4.5 is cheaper: $3.00 versus $15.00 per million tokens blended at 3:1 input:output. Input alone: $10.00 vs $2.00. Output alone: $30.00 vs $6.00.
What context windows do GPT-4 Turbo Preview and Grok 4.5 have?
GPT-4 Turbo Preview: 128,000 tokens. Grok 4.5: 500,000 tokens.
Who makes GPT-4 Turbo Preview and Grok 4.5?
GPT-4 Turbo Preview is made by OpenAI. Grok 4.5 is made by xAI.
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