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Grok Build 0.1

xAIReleased May 20, 2026

Grok Build 0.1 is xAI’s fast coding model trained specifically for agentic software engineering workflows. It supports text and image inputs with text output, and is optimized for interactive coding...

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Context window
256K tokens
Input
text, image
Output
text
Tokenizer
Grok
Released
May 20, 2026
Reasoning
always on

Pricing

Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.

Per 1M tokensProvider+ 3% feeYou pay
Input$1.00$0.030$1.03
Output$2.00$0.060$2.06
Cache read$0.200$0.0060$0.206

Supported parameters

  • frequency_penalty
  • include_reasoning
  • logprobs
  • max_tokens
  • presence_penalty
  • reasoning
  • response_format
  • seed
  • stop
  • structured_outputs
  • temperature
  • tool_choice
  • tools
  • top_logprobs
  • top_p

Call it

OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model x-ai/grok-build-0.1.

Code sample language
curl https://api.openkey.ai/v1/chat/completions \
  -H "Authorization: Bearer $OPENKEY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "x-ai/grok-build-0.1",
    "messages": [{"role": "user", "content": "Hello"}]
  }'
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.openkey.ai/v1",
    api_key=os.environ["OPENKEY_API_KEY"],
)

completion = client.chat.completions.create(
    model="x-ai/grok-build-0.1",
    messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api.openkey.ai/v1",
  apiKey: process.env.OPENKEY_API_KEY,
});

const completion = await client.chat.completions.create({
  model: "x-ai/grok-build-0.1",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

Questions

How much does Grok Build 0.1 cost via API?
Through OpenKey, Grok Build 0.1 costs $1.03 per 1M input tokens and $2.06 per 1M output tokens. That is the provider price ($1.00 / $2.00) plus a flat 3% fee — nothing else.
What is Grok Build 0.1's context window?
Grok Build 0.1 accepts up to 256K tokens of context.
Is Grok Build 0.1 OpenAI-compatible?
Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "x-ai/grok-build-0.1" using any OpenAI SDK — only the base URL and API key change.
What inputs does Grok Build 0.1 support?
Grok Build 0.1 accepts text, image input and produces text output.

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