hello-agents vs ART

hello-agents and ART share 7 technologies: FastAPI, OpenAI, AIOHTTP, peft, torch, transformers, and Pydantic. Both are written in Python.

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What they share and what sets them apart

In common

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

  • Anthropic
  • weave
  • apache-tvm-ffi
  • causal-conv1d
  • flash-attn-4
  • flash-linear-attention
  • flashinfer-python
  • megatron-core
  • ml-dtypes
  • NVIDIA
  • quack-kernels
  • torchtune
  • unsloth-zoo
  • litellm
  • msgspec

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
hello-agents227,369 lines written1,215 code files
ART345,462 lines written415 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.
hello-agents3.3% of its commits signed by AIWith Codex, Claude Code, and Cursor
ART6.6% of its commits signed by AIWith Claude Code, Cursor, Codex, and Amp
ActivityFrom GitHub and its history, on the day SeeRepo read it.
hello-agentsLast push November 11, 2026667 commits86,829 stars
ARTLast push November 10, 20261,465 commits10,856 stars
TestsThe files that test the code, and the share of code files a test imports.
hello-agents103 test files6.8% of its code files have a test that imports them
ART391 test files49.2% of its code files have a test that imports them

Frequently asked questions

Which is bigger, hello-agents or ART?
ART, with 345,462 lines written; hello-agents has 227,369.

The proof: OpenPipe/ART's code at commit 534620a

Which has more GitHub stars, hello-agents or ART?
hello-agents, with 86,829 stars; ART has 10,856.

The proof: datawhalechina/hello-agents on GitHub

Which has more tests, hello-agents or ART?
ART, with 391 test files; hello-agents has 103.

The proof: OpenPipe/ART's code at commit 534620a

Which was updated more recently, hello-agents or ART?
hello-agents: its last push was on November 11, 2026, and ART's on November 10, 2026.

The proof: datawhalechina/hello-agents's commits on GitHub

Which has more commits signed by AI, hello-agents or ART?
ART: an AI signed 6.6% of its commits, with Claude Code, Cursor, Codex, and Amp; in hello-agents, 3.3%.

The proof: the commits each tool signed in OpenPipe/ART

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