xAI / xai/grok-4.5

Grok 4.5 - access through LLMTR

Grok 4.5 is xAI's newer high-end Grok model for coding, agentic tasks, and knowledge work. It supports a 500K context window, text and image input, function calling, structured outputs, prompt cache pricing, and low/medium/high reasoning effort. LLMTR treats high as the default reasoning level and blocks inputs above 200K tokens until high-context pricing is verified.

Technical specifications

Canonical IDxai/grok-4.5
ProviderxAI
Context window500,000 tokens
OperationsRESPONSES
Modalitiestext, image

Pricing

A 6% platform margin applies to credit top-ups; model usage prices are not separately marked up.

OperationMetricUnitPrice
RESPONSESINPUT_TEXTPER_1M_TOKENS$2.00
RESPONSESCACHE_READPER_1M_TOKENS$0.500000
RESPONSESOUTPUT_TEXTPER_1M_TOKENS$6.00

Example usage

With existing OpenAI SDK flows, change only the base URL and model identifier.

curl https://llmtr.com/v1/chat/completions \
  -H "Authorization: Bearer llmtr-your_key" \
  -H "Content-Type: application/json" \
  -d '{"model":"xai/grok-4.5","messages":[{"role":"user","content":"Hello"}]}'

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