Grok 4.3

1M context and aggressive output pricing ($2.50). Sweet spot of the Grok 4.x family.

ChatxAI1M tokens$1.3626 / $2.7251 · 1M

xai/grok-4.3

Context
1M tokens
Completion cap
—
Tools
Yes
JSON
Yes

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "xai/grok-4.3",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Grok 4.3?
1M context and aggressive output pricing ($2.50). Sweet spot of the Grok 4.x family. Grok 4.3 runs on the Geek Hub API (OpenAI-compatible). Model id: xai/grok-4.3.
Is Grok 4.3 free?
No. Input is $1.3626 per 1M tokens and output is $2.7251 per 1M tokens on Geek Hub (markup included).
What is the context length of Grok 4.3?
Grok 4.3 has a 1M tokens context window.
Does Grok 4.3 support tool calling and structured outputs?
Grok 4.3 accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

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