Grok 4.6 API

x-ai/grok-4-6
xAI's flagship LLM with a 500K token context window and prompt caching.
Context
500K tokens
Input
$2.6 / 1M tokens
Output
$7.8 / 1M tokens
Released
Aug 7, 2026

How to use Grok 4.6 API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to x-ai/grok-4-6.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/chat/completions",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "x-ai/grok-4-6",
      "messages": [
        {
          "role": "user",
          "content": "Hello!"
        }
      ]
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/chat/completions", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "x-ai/grok-4-6",
    "messages": [
      {
        "role": "user",
        "content": "Hello!"
      }
    ]
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/chat/completions \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"x-ai/grok-4-6","messages":[{"role":"user","content":"Hello!"}]}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Grok 4.6 API Pricing

TypePrice
Input
$2.6 / 1M tokens
Output
$7.8 / 1M tokens
Cached input
$0.65 / 1M tokens

Tiered pricing: $2.6/$7.8 per 1M tokens up to 200K context, $5.2/$15.6 above 200K. Cached input: $0.65/1M (≤200K) or $1.3/1M (>200K).

Grok 4.6 Benchmarks

BenchmarkScoreWhat it measuresSourceRetrieved
Intelligence
44.4
Composite score across standardised reasoning, knowledge and problem-solving evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026
Coding
76.8
Composite score across standardised coding evaluations, measured independently by Artificial AnalysisSourceSeptember 12, 2026

Grok 4.6 vs other models

ModelInputOutputContextBest for
Grok 4.6
This page
$2.6 / 1M tokens
$7.8 / 1M tokens
500K tokens
Reasoning + agents with long context
$2.6 / 1M tokens
$7.8 / 1M tokens
500K tokens
Reasoning + agents with long context
$6.5 / 1M tokens
$39 / 1M tokens
1.05M tokens
Reasoning + agents
$6.877 / 1M tokens
$32.5 / 1M tokens
1M tokens
Chat + assistants

Frequently asked questions

Grok 4.6 has a 500,000 tokens context window.

Grok 4.6 takes text, file in as input and returns text out.

Use x-ai/grok-4-6 as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.

Grok 4.6 became available on August 7, 2026.

Grok 4.6 is priced at input $2.6 / 1M tokens, output $7.8 / 1M tokens, cached input $0.65 / 1M tokens.

Yes, Grok 4.6 can stream responses as they are generated.

Grok 4.6 was built by xAI .

Start building with Grok 4.6

Get API Key
1000+ models, one API.