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Grok Build 0.1

On docs.x.ai the slug grok-code-fast-1 now resolves as an alias to grok-build-0.1, "SpaceXAI's intelligent coding model for agentic software, engineering, and workflow tasks"; the retirement notice retired grok-code-fast-1 on 2026-05-15 with grok-build-0.1 as replacement.

text + image → text · made by xAI

$1→$2per Mtok in / out
xAI · 8 sellers

Sold by 12 ways

SellerLaneRate
Microsoft Azure AI cloudstandard$0.2per Mtok in$1.5per Mtok outprices.azure.com · read 2026-08-24
xAI apistandard$1per Mtok in$2per Mtok out$0.2per Mtok cacheddocs.x.ai · read 2026-10-31
xAI 0 ways$2per Mtok in$4per Mtok out$0.4per Mtok cached
xAI apinot on the seller's list todaylong-context$2per Mtok in$4per Mtok out$0.4per Mtok cacheddocs.x.ai · read 2026-08-25
AtlasCloud aggregatorstandard$1per Mtok in$2per Mtok out$0.2per Mtok cachedapi.atlascloud.ai · read 2026-09-20
ElectronHub 0 ways$1per Mtok in$2per Mtok out
ElectronHub aggregatornot on the seller's list todaystandard$1per Mtok in$2per Mtok outapi.electronhub.ai · read 2026-09-05
Nous Research aggregatorstandard$1per Mtok in$2per Mtok out$0.2per Mtok cachedinference-api.nousresearch.com · read 2026-09-12
OpenRouter 3 ways$1per Mtok in$2per Mtok out$0.2per Mtok cached
OpenRouter aggregatorstandard$1per Mtok in$2per Mtok out$0.2per Mtok cachedopenrouter.ai · read 2026-08-24
OpenRouter aggregatorxai/priority$2per Mtok in$4per Mtok out$0.4per Mtok cachedopenrouter.ai · read 2026-08-25
OpenRouter aggregatorxai/zdr/priority$2per Mtok in$4per Mtok out$0.4per Mtok cachedopenrouter.ai · read 2026-08-25
Requesty aggregatorxai$1per Mtok in$2per Mtok out$0.1per Mtok cachedrouter.requesty.ai · read 2026-08-28
Venice AI aggregatorstandard$1per Mtok in$2per Mtok out$0.2per Mtok cachedmodels.dev · read 2026-10-31
Vercel AI Gateway aggregatorstandard$1per Mtok in$2per Mtok out$0.2per Mtok cachedai-gateway.vercel.sh · read 2026-08-25

Measured 4 standings

PlaceBoardMetricScore
15thof 23Gbaeval — Epoch AIOverall score0.024
82ndof 163Artificial Analysis · Coding IndexIndex51.5
116thof 235Scicode — Epoch AIScore50.231
124thof 260Critpt — Epoch AIAccuracy9.143

About

Grok Build 0.1 — a text model from xAI, sold by 8 companies from $0.2 in and $1.5 out per million tokens, placed 124th of 260 on Critpt — Epoch AI.

It takes text and images and returns text, with a context window of 262,144 tokens. It was published in April 2026. Its sellers say it can reason step by step and call a tool. The catalogue files it under chat. Eight companies sell it. The cheapest is $0.2 in and $1.5 out per million tokens at Microsoft Azure AI. Beside the standard rate there are faster and separately routed lanes. It has been measured on 4 boards, and stands best at 124th of 260 on Critpt — Epoch AI.

Every current figure

Maker
xAI
Register
model
Takes
text + image
Returns
text
Context
262,144 tokens
Longest answer
256,000 tokens
Published
April 2026
Licence
not read
Sellers
8
Price
$0.2 in and $1.5 out per million tokens — Microsoft Azure AI
Boards
4
Best place
124th of 260 — Critpt — Epoch AI

Known as 5 names

xai/grok-build-0.1Code Fast 1x-ai/grok-build-0.1spacexai/grok-build-0.1grok-build-0.1