Grok Build 0.1
Unavailable in this round
Language modelAPI only
Grok Build 0.1
xAI
- Released
- June 2026
- Data date
- September 8, 2026
- Predecessor
- Grok Code Fast 1 (Official documentation)
- Speed
- 73.1 tokens/sOutput throughput
- Price
- Input · Output / 1M tokens
- Input
- Text, Image
- Output
- Text
Grok Build 0.1 is xAI’s model for coding and application building, integrated into the Grok Build workflow through the API.
The API identifier is grok-build-0.1, with grok-code-fast-1 documented as an alias. xAI publishes neither weights nor a parameter count. Compared with Grok 4.7, the provider describes a more narrowly build-focused access path.
Specifications and access
| Specification | Value and source |
|---|---|
| Weights | ProprietarySource |
| Access | APISource |
| Context window | 256,000 tokensSource |
| Notes | 256K context coding/build model, parameter count not disclosedSource |
| API model ID | grok-build-0.1Source |
| Source status | api-onlySource |
| Release | 2026-06Source |
| Maximum output | not statedSource |
| Input | Text, ImageSource |
| Output | TextSource |
| Tool calling | YesSource |
| Structured output | YesSource |
| Model aliases | grok-code-fast-1Source |
| Reasoning mode | low, medium, highSource |
Measurements without matching peer values
These measurements have no matching peer values under the same test conditions. Their original values and sources remain available here.
Vibe Code Bench v1.1: Overall (Show measurement, test conditions, and source)
- Source value
- 13.349
- Score
- 13.349
- Metric
- accuracy
- Unit
- %
- Benchmark version
- 1.1
- Category
- coding
- Task
- overall
- Task label
- Overall
- Direction
- Higher is better
- Comparison cohort
- vals-vibe-code-bench:1.1:overall
- Source type
- independent-evaluator
- Evaluator
- Vals AI
- Status
- active
- Retrieved at
- 2026-09-29
- Methodology
- Source model ID: grok/grok-build-0.1. Source model name: Grok Build 0.1. Evaluator: Vals AI. Dataset type: private. Leaderboard date: 2026-09-27. Harness: Grok Build. Latency in seconds: 394.638. Source ID: vals-ai. Evidence capture ID: vals-vibe-code-2026-09-29-a944ac42bd14. Source payload hash: a944ac42bd147ecb4e54c905d243c5ff8463f0d04b735f1a8627b369fd351391. Parser version: vals-astro-v2. Imported at: 2026-09-29
- Comparison methodology
- Harness: Grok Build
Output speed (Show measurement, test conditions, and source)
- Source value
- 73.1036089284728
- Score
- 73.1036089284728
- Metric
- tokens/s
- Unit
- tokens/s
- Direction
- Higher is better
- Source type
- independent-evaluator
- Evaluator
- Artificial Analysis
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Independent evaluation. unknown; default 10K-input workload only
- Context
- Artificial Analysis performance timing; output speed is decoded after the first streaming chunk. Provider basis: first-party API. Deprecated model. Artificial Analysis only continues benchmarking the default 10K-input workload.
Latency reasoning time (Show measurement, test conditions, and source)
- Source value
- 27.358430442974054
- Score
- 27.358430442974054
- Metric
- seconds
- Unit
- seconds
- Direction
- Lower is better
- Source type
- independent-evaluator
- Evaluator
- Artificial Analysis
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Independent evaluation. unknown; default 10K-input workload only
- Context
- Artificial Analysis performance timing; output speed is decoded after the first streaming chunk. Provider basis: first-party API. Deprecated model. Artificial Analysis only continues benchmarking the default 10K-input workload.
Latency input time (Show measurement, test conditions, and source)
- Source value
- 0.494728301999999
- Score
- 0.494728301999999
- Metric
- seconds
- Unit
- seconds
- Direction
- Lower is better
- Source type
- independent-evaluator
- Evaluator
- Artificial Analysis
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Independent evaluation. unknown; default 10K-input workload only
- Context
- Artificial Analysis performance timing; output speed is decoded after the first streaming chunk. Provider basis: first-party API. Deprecated model. Artificial Analysis only continues benchmarking the default 10K-input workload.
Answer generation time (end-to-end timing breakdown) (Show measurement, test conditions, and source)
- Source value
- 6.8396076107435135
- Score
- 6.8396076107435135
- Metric
- seconds
- Unit
- seconds
- Direction
- Lower is better
- Source type
- independent-evaluator
- Evaluator
- Artificial Analysis
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Independent evaluation. unknown; default 10K-input workload only
- Context
- Artificial Analysis performance timing; output speed is decoded after the first streaming chunk. Provider basis: first-party API. Deprecated model. Artificial Analysis only continues benchmarking the default 10K-input workload.
End-to-end reasoning time component (Show measurement, test conditions, and source)
- Source value
- 27.358430442974054
- Score
- 27.358430442974054
- Metric
- seconds
- Unit
- seconds
- Direction
- Lower is better
- Source type
- independent-evaluator
- Evaluator
- Artificial Analysis
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Independent evaluation. unknown; default 10K-input workload only
- Context
- Artificial Analysis performance timing; output speed is decoded after the first streaming chunk. Provider basis: first-party API. Deprecated model. Artificial Analysis only continues benchmarking the default 10K-input workload.
End-to-end input time component (Show measurement, test conditions, and source)
- Source value
- 0.494728301999999
- Score
- 0.494728301999999
- Metric
- seconds
- Unit
- seconds
- Direction
- Lower is better
- Source type
- independent-evaluator
- Evaluator
- Artificial Analysis
- Status
- active
- Retrieved at
- 2026-09-08
- Methodology
- Independent evaluation. unknown; default 10K-input workload only
- Context
- Artificial Analysis performance timing; output speed is decoded after the first streaming chunk. Provider basis: first-party API. Deprecated model. Artificial Analysis only continues benchmarking the default 10K-input workload.
Our tests
SVG short test
One SVG prompt and fixed output settings. Captures are shown only with 0 reported reasoning tokens or documented lack of reasoning controls. Identical test conditions do not make the models' internal compute identical.
Earlier tests
Pelican on a bicycle
A community classic for free-form SVG drawing.
Grok Build 0.1
Reasoning (requested): high
Current attempt
- Run date
- Oct 1, 2026
- API provider
- openrouter
- Requested API model
- x-ai/grok-build-0.1
- API model reported in response
- x-ai/grok-build-0.1
- Reasoning setting
- high
- Pinned endpoint
- xAI | x-ai/grok-build-0.1-20260520
- Temperature
- Provider default
- Token limit including reasoning
- 8,192 tokens
- Test protocol
- community-visual-tests-v1
- Technical checks
- Passed, not a quality rating
- Response time
- 25.1 s
Visually reviewed. This individual test does not establish overall model quality.
Prompt and test conditions
Generate an SVG of a pelican riding a bicycle
Token limit including reasoning: 8,192 tokens
Task origin (Simon Willison)Popularity
37.3 / 100
Published prices
Predecessor and successor
Sources and data date
| Type | Evidence and data date |
|---|---|
| Speed | SpaceXAI. Output speed after the first streaming chunk, not total response time. Classified as deprecated by Artificial Analysis. Artificial Analysis maintains only the default 10K-input workload there. Retrieved September 8, 2026. |
| Price | Base API prices without caching or batch discounts. Higher context tiers and other rates are listed under Costs. |
| Input | Documented modalities. Retrieved September 8, 2026. |
| Output | Documented modalities. Retrieved September 8, 2026. |
| Research status | Research date September 8, 2026. 2 source URLs checked. This documents the inspected sources, not an exhaustive inventory of every publication. |
| Not found in the inspected sources | parameters-billions Original wording xAI does not publish parameter counts on the model page. |
| Not found in the inspected sources | active-parameters-billions Original wording xAI does not publish active parameter counts on the model page. |
| Not found in the inspected sources | knowledge-cutoff Original wording The official xAI model page did not state a knowledge cutoff. |
| Not found in the inspected sources | profile-benchmarks Original wording The exact model documentation page exposed capabilities and pricing but no benchmark table. |
| Additional source | Model metadata |
| Additional source | Vals AI (retrieved September 29, 2026) |
| Additional source | OpenRouter: Popularity index (derived), CC BY 4.0 |
| Additional source | Vercel AI Gateway: Popularity index (derived), CC BY 4.0 |
| Additional source | Creative Commons Attribution 4.0 |
| Additional source | xAI Docs, May 15 2026 model retirement/migration guide (2026-09-19) |