Grok Build 0.1
- Next shutdown
- None setNo date on 1 platform
- List price · $ per 1M
- $1.00 in $2.00 outxAI API · cached input $0.20
- Context window
- 256Ktokens
- Released
- May 29, 2026xAI
Dates on every platform
1 listings · a floor is the earliest possible date
| Platform | Model ID and status | Deprecated | Shuts down | Replacement |
|---|---|---|---|---|
| xAI APIxAI: grok-build-0.1 model page (opens in a new tab) · checked Oct 14, 2026us-east-1, us-west-2 | grok-build-0.1Active · also grok-code-fast-1, grok-code-fast, grok-code-fast-1-0825 | – | None set | – |
xAI released it on the API as a public beta on 29 May 2026.
Since 15 May 2026 the retired grok-code-fast-1 slugs are aliases of grok-build-0.1.
Batch API requests are not supported.
What breaks when you move off Grok Build 0.1
No breaking changes are recorded for Grok Build 0.1.
List prices
$ per 1M tokens, with each price’s source
| Platform | Input | Cached | Output | In effect | Source |
|---|---|---|---|---|---|
xAI APIgrok-build-0.1 | $1.00 | $0.20 | $2.00 | Oct 14, 2026Current · Requests whose prompt reaches 200k tokens are billed at twice these rates for all tokens in the request. | xAI: Models (opens in a new tab) |
Change history
Redirectgrok-code-fast-1 retired on the xAI API and redirected to Grok Build 0.1xAI API
xAI retired grok-code-fast-1. Requests to the slug are routed to grok-build-0.1, which now lists grok-code-fast-1 as an alias.
- Platform
- xAI API
- Model
- Grok Code Fast 1
- Replacement
- Grok Build 0.1
Source: xAI, Grok Model Retirement on May 15, 2026 (opens in a new tab); xAI, grok-build-0.1 model page (opens in a new tab)