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airflow vs dagster

airflow and dagster share 29 technologies: FastAPI, azure-storage-blob, psycopg2-binary, snowflake-sqlalchemy, pyarrow, Celery, DuckDB, Google, AIOHTTP, uvicorn, React, react-router-dom, Rich, SQLAlchemy, alembic, sqlglot, azure-identity, flask-session, google-auth, pyjwt, jinja2, Pydantic, jsonschema, structlog, kubernetes, boto3, psutil, docker, and yaml. Both are written in Python.

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What they share and what sets them apart

apache

airflow

Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

Python47.4kRead on November 5, 2026, at commit 322c178What is airflow built with?

Only in airflow

In common

dagster-io

dagster

An orchestration platform for the development, production, and observation of data assets.

Python16.4kRead on November 7, 2026, at commit 55208daWhat is dagster built with?

Only in dagster

Side by side

SizeLines written by people and agents, without generated ones; code files, without tests.
airflow2,200,257 lines written4,596 code files
dagster1,373,416 lines written3,347 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.
airflow0.7% of its commits signed by AIWith Claude Code, GitHub Copilot, Cursor, and Devin
dagster1.4% of its commits signed by AIWith Claude Code, Gemini CLI, and Aider
ActivityFrom GitHub and its history, on the day SeeRepo read it.
airflowLast push November 5, 202641,804 commits47,376 stars
dagsterLast push November 7, 202628,090 commits16,376 stars
TestsThe files that test the code, and the share of code files a test imports.
airflow4,949 test files53.3% of its code files have a test that imports them
dagster2,682 test files15.3% of its code files have a test that imports them

Frequently asked questions

Which is bigger, airflow or dagster?
airflow, with 2,200,257 lines written; dagster has 1,373,416.

The proof: apache/airflow's code at commit 322c178

Which has more GitHub stars, airflow or dagster?
airflow, with 47,376 stars; dagster has 16,376.

The proof: apache/airflow on GitHub

Which has more tests, airflow or dagster?
airflow, with 4,949 test files; dagster has 2,682.

The proof: apache/airflow's code at commit 322c178

Which was updated more recently, airflow or dagster?
dagster: its last push was on November 7, 2026, and airflow's on November 5, 2026.

The proof: dagster-io/dagster's commits on GitHub

Which has more commits signed by AI, airflow or dagster?
dagster: an AI signed 1.4% of its commits, with Claude Code, Gemini CLI, and Aider; in airflow, 0.7%.

The proof: the commits each tool signed in dagster-io/dagster

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