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Models

Grok 4.3

By xAI. Unknown parameters, a context window of 1,000,000 tokens, licence Unknown.

Facts

Released
2026-04-17 the release date models.dev records models.dev, read
Licence
Unknown
Open weights
No models.dev records whether the weights are open models.dev, read
Parameters
Unknown
Active parameters
Unknown
Knowledge cutoff
Unknown
Context window
  • 1,000,000 tokens the context limit models.dev records for the maker's own API models.dev, read
  • 1,000,000 tokens the input limit LiteLLM records for the maker's own API LiteLLM, read
Longest output
  • 30,000 tokens the output limit models.dev records for the maker's own API models.dev, read
  • 1,000,000 tokens the output limit LiteLLM records for the maker's own API LiteLLM, read
Tool calling
  • Yes models.dev records tool_call as true models.dev, read
  • Yes LiteLLM records supports_function_calling as true for the maker's own API LiteLLM, read
Structured output
  • Yes models.dev records structured_output as true models.dev, read
  • Yes LiteLLM records supports_response_schema as true for the maker's own API LiteLLM, read
Reasoning controls
  • Yes models.dev records reasoning as true models.dev, read
  • Yes LiteLLM records supports_reasoning as true for the maker's own API LiteLLM, read
Inputs and outputs
text, image, pdf in, text out models.dev, read
Good for
  • Vision: models.dev lists images among its inputs models.dev, read
  • Reasoning: models.dev records it as a reasoning model models.dev, read

Prices

Each provider's own price in US dollars per million tokens, as an openly licensed source lists it
ProviderInputOutputContextAs ofSource
xAI1.25 USD2.50 USD1,000,000 older than 30 days; check the providermodels.dev, read

Run it on your own hardware

No source lists weight files or a parameter count for this model, so its memory needs are Unknown.

Use it from your harness

No endpoint in this directory serves this model yet.

Published results

These are results other people published. Baltor did not run them and does not rank models by them.

The arena score is the overall text score with style control from LMArena's latest leaderboard, rounded to a whole number.

Two more publishers are linked, never copied, because their terms do not allow it:

  • Artificial Analysis publishes its own intelligence, speed and price measurements.
  • OpenRouter lists current prices and uptime for each provider it routes to.