Grok
Grok 4.3
The xAI Grok 4.3 API is advanced flagship reasoning infrastructure, leading the industry in non-hallucination rates, instruction execution, and autonomous tool calling. Supporting text and image multimodal inputs, this interface provides both standard (non-reasoning) and deep reasoning operation modes to handle varying granularities of enterprise development tasks.
Pricing
| Billing unit | UniRoute | Market |
|---|---|---|
| Input | $0.50 | $1.25 |
| Output | $1.00 | $2.50 |
per 1M tokens
About this model
Equipped with an expanded 1M token context window, the xAI Grok 4.3 API processes massive technical datasets and extended conversational histories. Engineering teams can ingest full source code files or large multi-page documentation in a single request. This token capacity minimizes the need for complex text-chunking strategies while maintaining complete context across long documents.
Deep dive
Large-Scale Information Processing with xAI Grok 4.3 API
Equipped with an expanded 1M token context window, the xAI Grok 4.3 API processes massive technical datasets and extended conversational histories. Engineering teams can ingest full source code files or large multi-page documentation in a single request. This token capacity minimizes the need for complex text-chunking strategies while maintaining complete context across long documents.
Native Function Calling and Structured Outputs with Grok API
Grok API provides built-in support for function calling and guaranteed structured outputs. The interface directly connects the model to external tools and systems while formatting responses into clean, developer-defined JSON schemas. This integration ensures that model outputs conform to strict application logic and interface requirements without custom parsing.
Low-Hallucination Instruction Following on Grok-4.3 API
The Grok-4.3-latest infrastructure delivers low hallucination rates and high precision in multi-layered instruction execution. The model adheres strictly to complex system prompts and constraint parameters without logical drift. This advanced instruction following capability makes the interface highly reliable for deterministic workflows, automated multi-agent routing, and complex Grok 4.3 coding tasks that require strict alignment with technical guardrails.
Call it with one request
Works with the OpenAI SDK — just change the base URL.
curl https://api.uniroute.dev/v1/chat/completions \
-H "Authorization: Bearer $UNIROUTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "grok-4-3",
"messages": [{ "role": "user", "content": "Hello!" }],
"stream": true
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