August 28, 2025, xAI officially released Grok Code Fast 1, a large-scale programming model designed for developers, codenamed “Sonic.” This model aims to solve the common pain points of slow inference and tool invocation in current programming assistants, providing developers with a more flexible and responsive solution. Grok Code Fast 1 demonstrated its powerful capabilities upon release and was immediately available on seven major development platforms, including GitHub Copilot, Cursor, Cline, Kilo Code, Roo Code, opencode, and Windsurf. A limited-time free trial is also being offered on these partner platforms, allowing developers to experience this new programming assistant at no cost.
Grok Code Fast 1’s Core Features: Fast, Accurate, Comprehensive, and Cost-Effective
The core advantage of Grok Code Fast 1 lies in its comprehensively optimized performance, designed to elevate developers’ daily programming work to a new level.
- Lightning-Fast Inference: Grok Code Fast 1 uses a new model architecture and several innovative supercomputing technologies to achieve astonishing inference speeds. According to official data, its average inference speed is up to 190 tokens/second. What’s more, when invoking tools, it can complete dozens of operations at once, greatly reducing waiting time and making the programming experience as smooth as a flowing stream.
- Multi-Language Versatility: As a versatile programming assistant, Grok Code Fast 1 can skillfully handle multiple mainstream programming languages, with a particular focus on TypeScript, Python, Java, Rust, C++, and Go, covering the entire software development stack.
- One-Click Completion: Grok Code Fast 1 can efficiently handle a variety of programming tasks. Whether it’s building a project from scratch, providing deep answers for complex codebases, or performing precise bug fixes, it can complete tasks with minimal intervention.
- Ultra-Efficient Caching: To further optimize costs and efficiency, Grok Code Fast 1 has been deeply optimized for fast caching. When used in conjunction with partner platforms, the prompt cache hit rate often exceeds 90%, which means repeated requests are not billed again, saving developers a significant amount of money.
Grok Code Fast 1 Pricing and Performance Comparison
xAI positions Grok Code Fast 1 as an “economical” and “widely accessible” model, with a highly competitive pricing strategy.
- Official Pricing:
- Input: $0.20 / per million tokens
- Output: $1.50 / per million tokens
- Cached Input: $0.02 / per million tokens
Compared to similar models, Grok Code Fast 1 has an overwhelming advantage in cost. For example, in the “Tokens per Second vs. Output Price” performance comparison chart, Grok Code Fast 1, with a speed of 190 TPS and an output price of $1.50 per million tokens, far surpasses other competitors on the market.
Compared to the typical output price of $18 per million tokens for similar models, the cost of Grok Code Fast 1 is reduced by more than 90%. This makes the pay-as-you-go model more accessible, even for small teams who can afford it in the long run. In terms of performance benchmarks, Grok Code Fast 1 scored 70.8% on the complete SWE-Bench-Verified subset test, demonstrating its powerful code comprehension and generation capabilities.
Benefits of Grok Code Fast 1 for Developers
The release of Grok Code Fast 1 brings multiple tangible benefits to developers:
- More Cost-Effective: Its highly competitive pricing and efficient caching mechanism allow developers to get high-performance AI programming services at a lower cost.
- More Time-Saving: The lightning-fast inference and tool invocation capabilities greatly shorten development cycles, making coding as smooth as a conversation.
- More Peace of Mind: The xAI team is committed to rapid iteration based on community feedback, ensuring that issues can be fixed within a few days and providing reliable support for developers.
- Easy to Get Started: Developers don’t need to make complex configuration changes. They can seamlessly experience the convenience of Grok Code Fast 1 by simply switching models directly within their familiar development environment.
Summary
Grok Code Fast 1 redefines AI programming assistants with its “lightning-fast” and “cheap” features, providing developers with an excellent choice that combines performance and cost. Now, on major partner platforms, developers can experience this model for a limited time for free and see firsthand how it can accelerate their daily coding work and improve development efficiency.
