Grok Build 0.1

Grok Build 0.1 is xAI's fast coding model, trained specifically for agentic software engineering workflows and released as an early-access preview.

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input · usd / 1m tok

$1.00

output · usd / 1m tok

$2.00

context window

256ktokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $1.00over 200k · $2.00
output: $2.00over 200k · $4.00
cache read: $0.20over 200k · $0.40

brackets are by input tokens per request: a request over a threshold is billed at that bracket's rates for all of its tokens. cache creation can have a separate charge.

providers

xAI hosts Grok Build 0.1. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

specifications

takes text and image in, gives text outxai/grok-build-0.1

creatorxAI
model typeText generation
context window256,000 tokens
maximum outputnot published
input
takes text and image in, gives text out
outputtext
tool callingnot verified
releasedmay 19, 2026
endpoint/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

try it · your prompt, this model, live

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="xai/grok-build-0.1",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="xai/grok-build-0.1",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

benchmark results are not available for this model yet.

compare Grok Build 0.1 with other models

frontier labs and open weights, best-ranked firstusd / 1m tok · in / out

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impossibl models --all →

frequently asked questions

What is Grok Build 0.1?

Grok Build 0.1 is xAI's fast coding model, trained specifically for agentic software engineering workflows and released as an early-access preview. It accepts text and image inputs, supports tool calling and reasoning, and is optimized for interactive coding sessions rather than general knowledge work.

How much does Grok Build 0.1 cost?

Grok Build 0.1 costs $1.00 per million input tokens and $2.00 per million output tokens through the Impossibl API. Cache reads cost $0.20 per million tokens. These base rates apply through 200,000 total input tokens per request. Above 200,000 input tokens, the long-context rates in the pricing table apply to the whole request. All rates are in USD.

view the pricing table ↑

What is the context length of Grok Build 0.1?

Grok Build 0.1 has a 256,000-token context window through the Impossibl API.

What inputs and outputs does Grok Build 0.1 support?

Grok Build 0.1 accepts text and image as input. Grok Build 0.1 returns text.

How do I use Grok Build 0.1 through an API?

Grok Build 0.1 is available through the Impossibl API. Use xai/grok-build-0.1 as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

follow the api quickstart →

When was Grok Build 0.1 released?

xAI released Grok Build 0.1 on May 19, 2026.

Creator release announcement ↗

this page describes Grok Build 0.1 as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes. model descriptions and release dates, where available, use the creator sources linked under the answers above.

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