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xAI Grok 4.5 API developer guide
xAI Grok 4.5 is currently "Available". This guide provides model IDs, price snapshots, and copyable examples for integration. xAI Grok 4.5 model page
Overview
- Vendor: xAI
- Type: Text
- Number of tiers: 1
- Endpoint tags: openai
Available tiers and pricing
The model in requests must use the model IDs in the table below, case-sensitive.
| Tier | Model ID | Input | Output | Context |
|---|---|---|---|---|
| xAI Grok 4.5 | grok-4.5 | 按实际 Token 用量计费 | 总价 = 各类 Token 用量 × 对应单价 | — |
Prices are build-time snapshots; refer to the pricing page and console for the latest prices.
Base URL and authentication
Base URL is https://api.rokoapi.com/v1. All requests must include Authorization: Bearer $OPENAI_API_KEY.
Quickstart
curl https://api.rokoapi.com/v1/chat/completions \
-H "Authorization: Bearer $OPENAI_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "grok-4.5",
"stream": true,
"messages": [{"role": "user", "content": "Introduce yourself in one sentence"}]
}'Common parameters
| Parameter | Description |
|---|---|
model | Use the public model IDs from the table above. |
prompt / messages | Input prompt, conversation messages, or generation instructions; format depends on the endpoint. |
stream | Text models can set this to true to enable SSE streaming output. |
Notes
- Use only the model IDs listed on this page; unprovisioned or retired names will return a model unavailable error.
- If you encounter a 403 error, check your account balance, key group, and model access permissions.
- Multimodal, tool calling, caching, and streaming capabilities depend on the upstream model and channel configuration; refer to actual responses.