grok-build-0-1
Grok Build 0.1 is a fast coding model trained specifically for agentic software engineering. It takes text and image input and is optimized for interactive coding sessions.
Pricing: Input 200 credits / 1M tokens (≈ $1.00), Output 400 credits / 1M tokens (≈ $2.00).
Prices updated
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Grok Build 0.1 API on ModelFold
Grok Build 0.1 is a fast coding model trained specifically for agentic software engineering. It takes text and image input and is optimized for interactive coding sessions. Try Grok Build 0.1 in the ModelFold Playground, then call it from your own code through an OpenAI-compatible chat completions API.
What Is the Grok Build 0.1 API
Grok Build 0.1 at a glance
Grok Build 0.1 is a chat model from Grok. It accepts text, images and files (such as PDF) as input and returns text, with a context window of up to 256K tokens.
Use it without hosting anything
On ModelFold you call Grok Build 0.1 with a single API key — no model weights to download and no inference servers to run. The same key also works for the other chat, image, video and audio models on ModelFold.
Core Capabilities of Grok Build 0.1
Up to 256K tokens of context
Keep long conversations, large documents and sizeable code in a single request, so the model can reason over the full material instead of fragments.
Understands images and files (such as PDF)
Besides text, Grok Build 0.1 accepts images and files (such as PDF) as input, so a single request can combine instructions with visual or other media.
Function calling
Grok Build 0.1 supports tool (function) calling: describe your functions in the request and the model returns structured calls your code can run — the basis for agents and integrations.
Reasoning mode
Grok Build 0.1 can produce reasoning before its final answer; in the Playground you can switch reasoning on or off to compare results.
Structured outputs
Ask for JSON that follows a schema (response_format), which makes extraction, classification and system integrations more reliable.
How to Use Grok Build 0.1 on ModelFold
- 1
Step 1: Try it in the Playground
Open the Playground at the top of this page, type a prompt and see how Grok Build 0.1 responds before writing any code.
- 2
Step 2: Create an API key
Sign in to ModelFold and create an API key in the console. Keep it secret and send it as a Bearer token.
- 3
Step 3: Send a request
Call POST https://modelfold.ai/v1/chat/completions with "model": "grok-build-0-1" and your messages. Existing OpenAI-compatible SDKs work by changing the base URL and key.
- ✓
Step 4: Ship and monitor
Integrate the response into your product and check token usage and spend for every call in the console logs.
What You Can Build with Grok Build 0.1
AI coding assistants
Generate, explain, debug and refactor code, review pull requests and work through multi-file changes in developer tools and IDE plugins.
Autonomous agents
Build agents that plan multi-step tasks, call your tools and APIs, and keep working toward a goal across long sessions.
Low-latency experiences
Power chat interfaces, autocomplete and interactive tools where users expect fast responses.
Screenshot and image understanding
Read screenshots, charts, diagrams and photos alongside text — for UI review, visual QA or turning images into structured data.
Frequently Asked Questions
What is Grok Build 0.1?⌄
Grok Build 0.1 is a fast coding model trained specifically for agentic software engineering. It takes text and image input and is optimized for interactive coding sessions.
Which inputs does Grok Build 0.1 support?⌄
Grok Build 0.1 accepts text, images and files (such as PDF) and returns text. Through ModelFold you can send text and images (OpenAI-style image_url content); in the Playground you can also attach documents, which are converted to text.
How long is the context window of Grok Build 0.1?⌄
Up to 256K tokens, shared between your input and the model’s output.
Does Grok Build 0.1 support function calling?⌄
Yes. Grok Build 0.1 supports tools / function calling through the standard tools parameter of the chat completions API.
How is Grok Build 0.1 billed on ModelFold?⌄
Pay as you go by tokens: input and output tokens are charged at the per-million-token prices shown on this page. There is no monthly fee, and failed requests are not charged.
How do I call Grok Build 0.1 through the API?⌄
Send a POST request to https://modelfold.ai/v1/chat/completions with "model": "grok-build-0-1", using your ModelFold API key as the Bearer token.
| Input | 200 credits 1M tokens≈ $1.00 |
| Output | 400 credits 1M tokens≈ $2.00 |
Billed per token: input and output are priced separately, and thinking tokens count as output. The Playground charges exactly the same way.
Read API docs →AI Agents · Claude Code / Cursor / Trae →curl https://modelfold.ai/v1/chat/completions \
-H "Authorization: Bearer $MODELFOLD_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"grok-build-0-1","messages":[{"role":"user","content":"Hello"}]}'