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Compare AI models side by side

Choose up to 4 models. Prices, context windows and declared capabilities are read live from the OpenRouter listing, so the table reflects what the providers publish today.

OpenAIGPT-3.5 Turbo InstructxAIGrok 4.3
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Side-by-side comparison of OpenAI: GPT-3.5 Turbo Instruct, SpaceXAI: Grok 4.3
Attribute
OpenAIGPT-3.5 Turbo Instructopenai/gpt-3.5-turbo-instruct
xAIGrok 4.3x-ai/grok-4.3
Input priceUSD per 1M tokens$1.50$1.25 (best)
Output priceUSD per 1M tokens$2.00 (best)$2.50
Blended price75% in / 25% out$1.63$1.56 (best)
Vs. market median2.0× dearer2.0× dearer
Value rankcheapest = 1#274#271 (best)
Context windowtokens4K1M (best)
Max outputtokens4K900K (best)
Input modalitiestexttext, image, file
Output modalitiestexttext
Tool callingNot declaredDeclared
ReasoningNot declaredDeclared
Structured outputDeclaredDeclared
Listed on OpenRouter2023-09-282026-04-30 (best)

Source: OpenRouter (live)

Permanent link to this comparison

Read-out

What the numbers say

  • SpaceXAI: Grok 4.3 is the cheapest here at $1.56/M blended — 1.0× less than OpenAI: GPT-3.5 Turbo Instruct.
  • SpaceXAI: Grok 4.3 offers the largest context window (1M tokens) versus 4K for OpenAI: GPT-3.5 Turbo Instruct.
  • Tool calling is declared for SpaceXAI: Grok 4.3 only.
  • Reasoning mode is declared for SpaceXAI: Grok 4.3 only.

Generated from the live figures above. Capabilities are what each provider declares on its listing.

Curated

Head-to-heads we keep up to date

Each comparison resolves to the newest models in the named families and carries our own guidance on which to choose.

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