Source: https://seerepo.com/compare/apache/airflow/vs/pola-rs/polars
Markdown source: https://seerepo.com/compare/apache/airflow/vs/pola-rs/polars.md
Description: airflow and polars share 10 technologies: Flask, aiosqlite, pyarrow, pyiceberg, DuckDB, SQLite, SQLAlchemy, azure-identity, Pydantic, and boto3. airflow is written in Python and polars in Rust.

# airflow vs polars

airflow and polars share 10 technologies: Flask, aiosqlite, pyarrow, pyiceberg, DuckDB, SQLite, SQLAlchemy, azure-identity, Pydantic, and boto3. airflow is written in Python and polars in Rust.

- [apache/airflow](https://seerepo.com/r/apache/airflow): Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
- [pola-rs/polars](https://seerepo.com/r/pola-rs/polars): Extremely fast Query Engine for DataFrames, written in Rust

## What they share and what sets them apart

- In common: Flask, aiosqlite, pyarrow, pyiceberg, DuckDB, SQLite, SQLAlchemy, azure-identity, Pydantic, boto3
- Only in airflow: FastAPI, azure-search-documents, azure-storage-blob, confluent-kafka, ibm-db, influxdb3-python, pgvector, presto-python-client, psycopg, psycopg2-binary, pymongo, python-arango, Redis, snowflake-sqlalchemy, weaviate-client, Celery, oracledb, pinecone, pymssql, clickhouse-connect, gcloud-aio-storage, gcsfs, Neo4j, pymysql, Google, flask-appbuilder, asgiref, AIOHTTP, uvicorn, werkzeug, a2wsgi, Apache, Vite, React, react-router-dom, Rich, flask-sqlalchemy, alembic, sqlglot, flask-session, google-auth, pyspnego, pyjwt, cryptography, flask-login, keyring, google-auth-httplib2, google-auth-oauthlib, azure-ai-projects, pydantic-ai-slim, cohere, nbconvert, jinja2, aiosmtplib, beautifulsoup4, icalendar, sendgrid, flask-wtf, wtforms, jsonschema, msgspec, marshmallow, azure-mgmt-containerinstance, azure-mgmt-resource, Flower, OpenTelemetry, structlog, kubernetes, psutil, kubernetes-asyncio, python-on-whales, docker, Alibaba Cloud, colorlog, org.apache.logging.log4j:log4j-api, org.apache.logging.log4j:log4j-core, org.slf4j:slf4j-api, next-themes, Chakra UI, React Hook Form, yaml
- Only in polars: polars-io, pylance, s3fs, object_store, deltalake, adbc-driver-manager, adbc-driver-sqlite, lancedb, flask-cors, Tokio, pydata-sphinx-theme, sphinx-design, altair, comfy-table, matplotlib, jax, torch, xlsxwriter, openpyxl, schemars

## Side by side

| | airflow | polars |
|---|---|---|
| Size | 2,200,257 lines written, 4,596 code files | 953,615 lines written, 2,273 code files |
| Who writes it | 0.7% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, and Devin | 0.9% of its commits signed by AI. With Claude Code, Cursor, GitHub Copilot, and Gemini CLI |
| Activity | Last push November 5, 2026, 41,804 commits, 47,376 stars | Last push November 6, 2026, 16,254 commits, 40,274 stars |
| Tests | 4,949 test files. 53.3% of its code files have a test that imports them | 671 test files. 11% 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, airflow or polars?

airflow, with 2,200,257 lines written; polars has 953,615.

The proof: [apache/airflow's code at commit 322c178](https://github.com/apache/airflow/tree/322c178e05b6621b9577e62e66964c1f4c0b590f)

### Which has more GitHub stars, airflow or polars?

airflow, with 47,376 stars; polars has 40,274.

The proof: [apache/airflow on GitHub](https://github.com/apache/airflow)

### Which has more tests, airflow or polars?

airflow, with 4,949 test files; polars has 671.

The proof: [apache/airflow's code at commit 322c178](https://github.com/apache/airflow/tree/322c178e05b6621b9577e62e66964c1f4c0b590f)

### Which was updated more recently, airflow or polars?

polars: its last push was on November 6, 2026, and airflow's on November 5, 2026.

The proof: [pola-rs/polars's commits on GitHub](https://github.com/pola-rs/polars/commits)

### Which has more commits signed by AI, airflow or polars?

polars: an AI signed 0.9% of its commits, with Claude Code, Cursor, GitHub Copilot, and Gemini CLI; in airflow, 0.7%.

The proof: [the commits each tool signed in pola-rs/polars](https://seerepo.com/r/pola-rs/polars/ai)

## Sources

- apache/airflow: Read on November 5, 2026, at commit 322c178 (https://github.com/apache/airflow/tree/322c178e05b6621b9577e62e66964c1f4c0b590f)
- pola-rs/polars: Read on November 6, 2026, at commit a2a4dea (https://github.com/pola-rs/polars/tree/a2a4dea74ca08840c06cc7007f7d7e8d013af49f)

## 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.