Grok Build 0.1

Grok Build 0.1 is a coding model from xAI, tuned for agentic engineering and iterative edits. It is the first version of the grok-build line in the registry. It has a context window of 256,000 tokens and a maximum output of 256,000 tokens. Pricing starts at $1.00 per million input tokens and $2.00 per million output tokens, with cached input at $0.10 per million tokens. The model does not have open weights. It supports reasoning mode, tool calling, and accepts image, PDF, and text inputs, returning text.

First version of its line in the registry.

• ·256k token context window
• ·256k token max output
• ·Reasoning mode for complex tasks
• ·Tool calling for agentic workflows
• ·Accepts image, PDF, and text inputs

• Reach for it for agentic coding workflows
• Reach for it for iterative code edits
• Reach for it for large-context code analysis
• Reach for it for multimodal code understanding

16 hosts serve this model at the price above · the maker's documentation

The registry keeps the six most recent versions of a line. Older ones stay in the file and can be surfaced without a rebuild.

What is the context window?

The context window is 256,000 tokens, and the maximum output is also 256,000 tokens.

What are the pricing details?

Input costs $1.00 per million tokens, output $2.00 per million, and cached input $0.10 per million.

Does it support tool calling?

Yes, it supports tool calling and reasoning mode. It also accepts image, PDF, and text inputs.