ART vs hindsight
ART and hindsight share 7 technologies: FastAPI, OpenAI, Anthropic, AIOHTTP, torch, litellm, and Pydantic. Both are written in Python.
LinkedInWhat 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
apache-tvm-ffi
- causal-conv1d
- flash-attn-4
flash-linear-attention
flashinfer-python
- megatron-core
- ml-dtypes
- NVIDIA
- quack-kernels
- torchtune
unsloth-zoo
- transformers
peft
msgspec
In common
vectorize-io
hindsight
Hindsight: Agent Memory That Learns
Python60.7kRead on November 13, 2026, at commit 9a730faWhat is hindsight built with?Only in hindsight
- pg0-embedded
pgvector
psycopg2-binary
- Postgres
uvicorn
fastmcp
- Tokio
- Next.js
- React
- Preact
@paperclipai/plugin-sdk
- Rich
- crossterm
- indicatif
- Ratatui
- SQLAlchemy
- alembic
- pyjwt
ag2
- agent-framework-core
- einops
- Haystack
- hindsight-api-slim
openai-agents
- Pipecat
- pydantic-ai-slim
strands-agents
- toktok-rs
torchvision
- hindsight-api
- hindsight-client
- dify-plugin
- hindsight-embed
- CrewAI
google-adk
- LangChain
llama-index-core
safety-agent
agno
- autogen-core
flashrank
- MCP
- smolagents
pillow
- validator.v2
- metricreader.--init--
opentelemetry-semantic-conventions
- OpenTelemetry
opentelemetry-instrumentation-fastapi
- Tailwind CSS
class-variance-authority
- @tailwindcss/postcss
- PostCSS
- next-themes
tailwind-merge
sonner
- Radix UI
react18-json-view
recharts
- cmdk
- Lucide
- react-markdown
remark-gfm
ai
- Zod
- Cloudflare
- @opencode-ai/plugin
- @elizaos/core
eve
- js-yaml
@clack/prompts
Side by side
ARThindsight
SizeLines written by people and agents, without generated ones; code files, without tests.
ART345,462 lines written415 code files
hindsight775,545 lines written1,263 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
hindsight6.8% of its commits signed by AIWith Claude Code, Cursor, Codex, and GitHub Copilot
ActivityFrom GitHub and its history, on the day SeeRepo read it.
ARTLast push November 10, 20261,465 commits10,856 stars
hindsightLast push November 12, 20264,120 commits60,699 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
hindsight1,381 test files28.2% of its code files have a test that imports them
Frequently asked questions
Which is bigger, ART or hindsight?
hindsight, with 775,545 lines written; ART has 345,462.
Which has more GitHub stars, ART or hindsight?
hindsight, with 60,699 stars; ART has 10,856.
The proof: vectorize-io/hindsight on GitHub
Which has more tests, ART or hindsight?
hindsight, with 1,381 test files; ART has 391.
Which was updated more recently, ART or hindsight?
hindsight: its last push was on November 12, 2026, and ART's on November 10, 2026.
The proof: vectorize-io/hindsight's commits on GitHub
Which has more commits signed by AI, ART or hindsight?
hindsight: an AI signed 6.8% of its commits, with Claude Code, Cursor, Codex, and GitHub Copilot; in ART, 6.6%.
The proof: the commits each tool signed in vectorize-io/hindsight
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