Source: https://seerepo.com/compare/Aider-AI/aider/vs/datalab-to/marker
Markdown source: https://seerepo.com/compare/Aider-AI/aider/vs/datalab-to/marker.md
Description: aider and marker share 9 technologies: Google, OpenAI, scikit-learn, torch, transformers, filetype, pillow, Pydantic, and psutil. Both are written in Python.

# aider vs marker

aider and marker share 9 technologies: Google, OpenAI, scikit-learn, torch, transformers, filetype, pillow, Pydantic, and psutil. Both are written in Python.

- [Aider-AI/aider](https://seerepo.com/r/Aider-AI/aider): aider is AI pair programming in your terminal
- [datalab-to/marker](https://seerepo.com/r/datalab-to/marker): Convert PDF to markdown + JSON quickly with high accuracy

## What they share and what sets them apart

- In common: Google, OpenAI, scikit-learn, torch, transformers, filetype, pillow, Pydantic, psutil
- Only in aider: aiosqlite, gitdb, google-cloud-core, pyarrow, SQLite, diskcache, PostHog, AIOHTTP, anyio, asgiref, FastAPI, starlette, tornado, Streamlit, cycler, fonttools, soupsieve, contourpy, matplotlib, Rich, prompt-toolkit, SQLAlchemy, cryptography, llama-index-instrumentation, llama-index-workflows, nltk, safetensors, sentence-transformers, tiktoken, tokenizers, litellm, llama-index-core, llama-index-embeddings-huggingface, jinja2, markdown-it-py, markupsafe, mdurl, tinytag, beautifulsoup4, pypandoc, annotated-types, jsonschema-specifications, marshmallow, referencing, jsonschema
- Only in marker: Anthropic, surya-ocr, markdown2, markdownify

## Side by side

| | aider | marker |
|---|---|---|
| Size | 40,345 lines written, 80 code files | 16,474 lines written, 121 code files |
| Who writes it | 89.5% of its commits signed by AI. With Aider, Gemini CLI, Codex, and Claude Code | 1% of its commits signed by AI. With Claude Code |
| Activity | Last push May 22, 2026, 12,461 commits, 49,968 stars | Last push October 29, 2026, 1,097 commits, 40,791 stars |
| Tests | 57 test files. 42.5% of its code files have a test that imports them | 36 test files. 37.2% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, aider or marker?

aider, with 40,345 lines written; marker has 16,474.

The proof: [Aider-AI/aider's code at commit 5dc9490](https://github.com/Aider-AI/aider/tree/5dc9490bb35f9729ef2c95d00a19ccd30c26339c)

### Which has more GitHub stars, aider or marker?

aider, with 49,968 stars; marker has 40,791.

The proof: [Aider-AI/aider on GitHub](https://github.com/Aider-AI/aider)

### Which has more tests, aider or marker?

aider, with 57 test files; marker has 36.

The proof: [Aider-AI/aider's code at commit 5dc9490](https://github.com/Aider-AI/aider/tree/5dc9490bb35f9729ef2c95d00a19ccd30c26339c)

### Which was updated more recently, aider or marker?

marker: its last push was on October 29, 2026, and aider's on May 22, 2026.

The proof: [datalab-to/marker's commits on GitHub](https://github.com/datalab-to/marker/commits)

### Which has more commits signed by AI, aider or marker?

aider: an AI signed 89.5% of its commits, with Aider, Gemini CLI, Codex, and Claude Code; in marker, 1%.

The proof: [the commits each tool signed in Aider-AI/aider](https://seerepo.com/r/Aider-AI/aider/ai)

## Sources

- Aider-AI/aider: Read on November 5, 2026, at commit 5dc9490 (https://github.com/Aider-AI/aider/tree/5dc9490bb35f9729ef2c95d00a19ccd30c26339c)
- datalab-to/marker: Read on November 6, 2026, at commit 71dd5fd (https://github.com/datalab-to/marker/tree/71dd5fd7e51ab24f8624b6ba2fcb6014b4e40ed4)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.