Grok Code Fast 1
Grok Code Fast 1 is xAI's specialized coding model optimized for fast code generation, completion, and debugging. It delivers low-latency code output within a context window of 256K tokens, tuned specifically for software development workflows.
import { streamText } from 'ai'
const result = streamText({ model: 'xai/grok-code-fast-1', prompt: 'Why is the sky blue?'})What To Consider When Choosing a Provider
Zero Data Retention
AI Gateway does not currently support Zero Data Retention for this model. See the documentation for models that support ZDR.Authentication
AI Gateway authenticates requests using an API key or OIDC token. You do not need to manage provider credentials directly.
Grok Code Fast 1 is optimized for code tasks. For general text generation, summarization, or conversational tasks, a general-purpose Grok model performs better.
The fast inference profile is designed for real-time development workflows. Test end-to-end latency in your specific IDE or tool integration to confirm it meets responsiveness requirements.
When to Use Grok Code Fast 1
Best For
Code generation and completion
In IDE integrations where developers expect near-instant suggestions
Code refactoring and modernization
Tasks that transform legacy code to follow current patterns and best practices
Debugging assistance:
The model analyzes error messages, stack traces, and code context to identify and fix issues
Automated code review
In CI/CD pipelines that flag potential issues before human review
Code explanation and documentation:
Generates inline comments, docstrings, and technical documentation from code
Consider Alternatives When
General-purpose tasks beyond coding:
Grok 3 Fast or Grok 4 Fast provide broader capabilities
Complex architectural reasoning
About large systems where Grok 4's deeper reasoning may produce better high-level analysis
Multi-language translation or content generation:
A general-purpose model handles the task better
Conclusion
Grok Code Fast 1 is purpose-built for the development workflow. Its code-specific optimization and fast inference make it the natural choice for IDE integrations, code review automation, and any pipeline where code is the primary input and output. For teams building developer tools or automating software engineering tasks, it offers a targeted alternative to using general-purpose models for code.
FAQ
Grok Code Fast 1 handles code across major programming languages including Python, JavaScript, TypeScript, Go, Rust, Java, C++, and others. It is tuned for general code understanding rather than being limited to specific languages.
Grok Code Fast 1 is specifically optimized for code tasks with lower latency and code-tuned output quality. General-purpose Grok models handle coding alongside other tasks but are not specialized for the development workflow.
256K tokens, sufficient for processing large files, multiple related files, or extensive code context within a single request.
This page lists the current rates. Multiple providers can serve Grok Code Fast 1, so AI Gateway surfaces live pricing rather than a single fixed figure.
Use your Vercel AI Gateway API key with xai/grok-code-fast-1 as the model identifier. No separate xAI account is needed for gateway-managed access.
Yes. It can analyze code for potential bugs, style issues, performance problems, and security concerns. It's well-suited for automated review in CI/CD pipelines.
Zero Data Retention is not currently available for this model. ZDR on AI Gateway applies to direct gateway requests; BYOK flows aren't covered. See https://vercel.com/docs/ai-gateway/capabilities/zdr for details.
