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ART vs sglang

ART and sglang share 12 technologies: FastAPI, OpenAI, Anthropic, AIOHTTP, apache-tvm-ffi, flashinfer-python, NVIDIA, quack-kernels, torch, transformers, Pydantic, and msgspec. Both are written in Python.

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What they share and what sets them apart

OpenPipe

ART

Agent Reinforcement Trainer: train multi-step agents for real-world tasks using GRPO. Give your agents on-the-job training. Reinforcement learning for Qwen3.6, GPT-OSS, Llama, and more!

Python10.9kRead on November 13, 2026, at commit 534620aWhat is ART built with?

Only in ART

  • weave
  • causal-conv1d
  • flash-attn-4
  • flash-linear-attention
  • megatron-core
  • ml-dtypes
  • torchtune
  • unsloth-zoo
  • litellm
  • peft

In common

sgl-project

sglang

SGLang is a high-performance serving framework for large language models and multimodal models.

Python38.5kRead on November 6, 2026, at commit 0afb736What is sglang built with?

Only in sglang

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
ART345,462 lines written415 code files
sglang3,312,331 lines written4,627 code files
Who writes itA commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
ART6.6% of its commits signed by AIWith Claude Code, Cursor, Codex, and Amp
sglang8.7% of its commits signed by AIWith Claude Code, Gemini CLI, Cursor, GitHub Copilot, Devin, Codex, CodeRabbit, and OpenHands
ActivityFrom GitHub and its history, on the day SeeRepo read it.
ARTLast push November 10, 20261,465 commits10,856 stars
sglangLast push November 6, 202621,830 commits38,542 stars
TestsThe files that test the code, and the share of code files a test imports.
ART391 test files49.2% of its code files have a test that imports them
sglang4,212 test files59.6% of its code files have a test that imports them

Frequently asked questions

Which is bigger, ART or sglang?
sglang, with 3,312,331 lines written; ART has 345,462.

The proof: sgl-project/sglang's code at commit 0afb736

Which has more GitHub stars, ART or sglang?
sglang, with 38,542 stars; ART has 10,856.

The proof: sgl-project/sglang on GitHub

Which has more tests, ART or sglang?
sglang, with 4,212 test files; ART has 391.

The proof: sgl-project/sglang's code at commit 0afb736

Which was updated more recently, ART or sglang?
ART: its last push was on November 10, 2026, and sglang's on November 6, 2026.

The proof: OpenPipe/ART's commits on GitHub

Which has more commits signed by AI, ART or sglang?
sglang: an AI signed 8.7% of its commits, with Claude Code, Gemini CLI, Cursor, GitHub Copilot, Devin, Codex, CodeRabbit, and OpenHands; in ART, 6.6%.

The proof: the commits each tool signed in sgl-project/sglang

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