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Grok 4.6

Grok 4.6 is an xAI text reasoning model available through Chat Completions with streaming, JSON objects, tool calling, and four reasoning effort levels.

Use in your agent

API access

Endpoint

POST /v1/chat/completions

Base URL

https://api.hiapi.ai

OpenAI Chat Completions compatible. Use one HiAPI key across all available models.

Input price

1,680 Credits

/ 1M tokens · Total input ≤ 200,000 tokens

Output price

5,040 Credits

/ 1M tokens · Total input ≤ 200,000 tokens

Context

context window

Max output

output tokens

Try Grok 4.6

Ask a question to stream the answer and inspect token usage, latency, and estimated cost.

Grok 4.6 API Quickstart

Call Grok 4.6 with the OpenAI-compatible Chat Completions format. Copy a ready-to-use cURL, Python, or Node.js example below.

Code Example

API Endpoint:/v1/chat/completions

curl -X POST "https://api.hiapi.ai/v1/chat/completions" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "grok-4.6",
  "messages": [
    {
      "role": "user",
      "content": "A cat walking on the beach at sunset"
    }
  ],
  "stream": false,
  "reasoning_effort": "high"
}'

Tip: Replace YOUR_API_KEY with your actual API key from the API Keys page.

Compatible with the OpenAI Chat Completions format. Set the base URL, API key, and model name to get started.

Grok 4.6 full API documentation Manage API keysUse the same HiAPI key across all available models.

Grok 4.6 API Pricing

Billing follows the input, output, and cache token categories actually reported in usage. All prices below are shown per 1 million tokens.

Total input ≤ 200,000 tokens

Input tokens: 1,680 Credits/ 1M tokens
Output tokens: 5,040 Credits/ 1M tokens

Cache read: 420 Credits/ 1M tokens

Long-context pricing and billing details

The tier is selected by total input tokens per request, including cache reads and writes. Above the threshold, that tier applies to all input, output, and cache tokens in the request, not only the excess.

Token type	Total input ≤ 200,000 tokens	Total input > 200,000 tokens
Input	1,680 Credits	3,360 Credits
Output	5,040 Credits	10,080 Credits
Cache read	420 Credits	840 Credits

All prices are per 1 million tokens.

Grok 4.6 Model Specifications

These specifications reflect the current public HiAPI text request contract. Undisclosed capabilities are not inferred by the page.

Streaming: Supported
Tool calling: Supported
Structured JSON: Supported
Reasoning: Supported
Input modalities: text
Output modalities: text
Reasoning efforts: low · medium · high · xhigh
Max output: -

About Grok 4.6

Grok 4.6 is an xAI text reasoning model available through Chat Completions with streaming, JSON objects, tool calling, and four reasoning effort levels.

HiAPI exposes this model through /v1/chat/completions. Test prompts and parameters in the Playground, then use the same HiAPI API key in your server application.

Provider: Grok
Endpoint: /v1/chat/completions
Context window: -
Released: Not disclosed

How to Use Grok 4.6

The Playground and API share the same model ID, so three steps take a tested prompt into production.

Step 1
Validate online
Test the system prompt, output length, and model-supported reasoning options in the Playground.
Step 2
Manage API keys
View an existing key or create another after signing in; one key works across all available models.
Step 3
Integrate your server
Send requests to /v1/chat/completions and track cost with the usage object.

Need to compare models and billing tiers?View live pricing for all models

Frequently asked questions

What is Grok 4.6?

Grok 4.6 is an xAI text model exposed by HiAPI through Chat Completions for text input and text output.

Which endpoint and model ID should I use?

Use POST /v1/chat/completions with model=grok-4.6.

Which reasoning efforts are supported?

Use reasoning_effort=low, medium, high, or xhigh. The default is high, and reasoning tokens count as output tokens.

Does it support streaming, JSON objects, and tools?

Yes. Use stream=true, response_format.type=json_object, and tools/tool_choice. Tool continuation must replay the assistant tool call and matching tool result.

Are image input and Responses available?

They are not part of the initial HiAPI public contract; use text messages with Chat Completions.

How are tokens and long context handled?

Input, output, and cached input use live rates on the model and pricing pages; reasoning counts as output. The initial release does not promise use above 200K until long-context verification is complete.

HiAPI Blog

Grok 4.6 guides and tutorials

View all articles