token.app › Compare › GPT-3.5 Turbo Instruct vs Grok 4.5

GPT-3.5 Turbo Instruct vs Grok 4.5

GPT-3.5 Turbo Instruct is 1.8× 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-3.5 Turbo InstructGrok 4.5
ProviderOpenAIxAI
Input $/1M$1.50$2.00
Output $/1M$2.00$6.00
Blended $/1M$1.63$3.00
Context window4K500K
Max output4K—
ReleasedSep 2023Jul 2026
LicenceProprietaryProprietary
Choose GPT-3.5 Turbo Instruct if…
  • Costs less per token — $1.63 vs $3.00 blended
Choose Grok 4.5 if…
  • Larger context window (500K)
  • Newer model (released Jul 2026)
FAQ
Which is better, GPT-3.5 Turbo Instruct or Grok 4.5?
We do not hold independently-run benchmark scores covering both GPT-3.5 Turbo Instruct and Grok 4.5, so we make no quality claim. Their pricing and specifications are compared on this page.
Is GPT-3.5 Turbo Instruct cheaper than Grok 4.5?
GPT-3.5 Turbo Instruct is cheaper: $1.63 versus $3.00 per million tokens blended at 3:1 input:output. Input alone: $1.50 vs $2.00. Output alone: $2.00 vs $6.00.
What context windows do GPT-3.5 Turbo Instruct and Grok 4.5 have?
GPT-3.5 Turbo Instruct: 4,095 tokens. Grok 4.5: 500,000 tokens.
Who makes GPT-3.5 Turbo Instruct and Grok 4.5?
GPT-3.5 Turbo Instruct is made by OpenAI. Grok 4.5 is made by xAI.
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