Fast, Flexible and Portable Structured Generation
⚡ Executive Summary & Quick Facts
Authoritative Sourcexgrammar is xgrammar is an open-source project written in C++: Fast, Flexible and Portable Structured Generation..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), mlc-ai/xgrammar has accumulated 1,944 GitHub stars and 224 forks. It is written in C++, licensed under Apache-2.0, and ranks #5,689 globally. It is actively maintained with the latest commit recorded on Oct 6, 2026.”
| Repository | mlc-ai/xgrammar ↗ |
|---|---|
| Primary Category | large language models |
| Language & Stack | C++ |
| Software License | Apache-2.0 |
| Community Traction | ★ 1.9K stars · ⑂ 224 forks · #5,689 globally |
| Maintenance | ● Active (Last commit: Oct 6, 2026) · 104 open issues |
| Target Audience | Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 92/100 · Grade AYes, xgrammar is actively maintained. Continuous telemetry recorded the last code commit on Oct 6, 2026 (38 days ago). Supported by 1,944 stars and 224 community forks, this repository holds a calculated health index of 92/100, reflecting regular maintenance (38 days ago) and healthy issue cadence.
Star History
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+0
STARS · LAST 30 DAYS
1
PER DAY
#439
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +0 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +0 | +0 | +11 |
xgrammar gained 0 stars in the last 30 days, about 1 a day, and now has 1.9K. It is about 2 years old and has averaged roughly 972 stars a year. It ranks #439 among C++ repositories and #5,689 across all languages on GitHubRepo.
Trending Record
43
DAYS ON TRENDING
#1067
BEST RANK
Sep 25, 2026
FIRST APPEARANCE
Active
STATUS TODAY
xgrammar has maintained a continuous presence across global trending indexes, peaking at #1067. Below is the 30-day activity profile:
💡 Overview
xgrammar is an open-source project written in C++: Fast, Flexible and Portable Structured Generation.
Engineered for speed, consistency, and developer ease, it solves common hurdles in large-language-models, structured-generation. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C++ for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/mlc-ai/xgrammar.git
cd xgrammar⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
xgrammar coordinates its core functionality through a modular C++ pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed xgrammar into C++ backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open Apache-2.0 license.
🚀 Getting Started
Install xgrammar using your package manager: `git clone https://github.com/mlc-ai/xgrammar.git`
Initialize your project workspace or configuration file for xgrammar.
Import xgrammar into your codebase or invoke it directly from your terminal.
Execute your test suite or run `xgrammar --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C++, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
mlc-ai/xgrammar is currently ranked #5,689 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
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|---|---|---|---|---|
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| #5,689 | mlc-ai/xgrammar This Project | C++ | ★ 1.9K | |
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Frequently Asked Questions
What does xgrammar do? +
Fast, Flexible and Portable Structured Generation
Is xgrammar actively maintained in 2026? +
Yes, xgrammar is actively maintained. The latest code push was recorded on Oct 6, 2026 (38 days ago). It holds a calculated Maintenance Health Score of 92/100 (A rating) with 1,944 stars and 104 open issues.
What language is xgrammar written in? +
The primary language is C++. Topics include: large-language-models, structured-generation.
How many stars does xgrammar have? +
xgrammar has 1,944 stars and 224 forks on GitHub.
How does xgrammar rank among GitHub repositories? +
With 1,944 stars, mlc-ai/xgrammar is ranked #5,689 globally across all repositories tracked on GitHubRepo and #439 among C++ projects.
What license is xgrammar distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
