XGrammar GitHub repository (mlc-ai/xgrammar)

Fields

id

sources/niche-xgrammar-repo

URL

https://github.com/mlc-ai/xgrammar

Publisher

MLC AI

Kind

repo

Accessed

2026-10-03

notes

XGrammar README. NOTE on naming: the canonical repo is mlc-ai/xgrammar; the older handle github.com/xgrammar-ai/xgrammar returns HTTP 404 as of 2026-10-03, so several blog posts linking it are stale. README claims near-zero overhead in JSON generation and states XGrammar is the default structured-generation backend for most LLM inference engines, listing vLLM (integrated 2024/12) and SGLang (2024/11) as adopters. Python, C++, JavaScript and Swift APIs; `pip install xgrammar[metal]` for Apple MPS. API metadata 2026-10-03: created 2024-06-28, last push 2026-09-30, v0.2.8 (2026-09-24), Apache-2.0.

Notes

XGrammar README. NOTE on naming: the canonical repo is mlc-ai/xgrammar; the older handle github.com/xgrammar-ai/xgrammar returns HTTP 404 as of 2026-10-03, so several blog posts linking it are stale. README claims near-zero overhead in JSON generation and states XGrammar is the default structured-generation backend for most LLM inference engines, listing vLLM (integrated 2024/12) and SGLang (2024/11) as adopters. Python, C++, JavaScript and Swift APIs; `pip install xgrammar[metal]` for Apple MPS. API metadata 2026-10-03: created 2024-06-28, last push 2026-09-30, v0.2.8 (2026-09-24), Apache-2.0.

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