Source: https://seerepo.com/compare/apache/airflow/vs/dagster-io/dagster
Markdown source: https://seerepo.com/compare/apache/airflow/vs/dagster-io/dagster.md
Description: 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.

# 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.

- [apache/airflow](https://seerepo.com/r/apache/airflow): Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
- [dagster-io/dagster](https://seerepo.com/r/dagster-io/dagster): An orchestration platform for the development, production, and observation of data assets.

## What they share and what sets them apart

- In common: 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, yaml
- Only in airflow: Flask, aiosqlite, azure-search-documents, confluent-kafka, ibm-db, influxdb3-python, pgvector, presto-python-client, psycopg, pymongo, python-arango, Redis, weaviate-client, oracledb, pyiceberg, pinecone, pymssql, clickhouse-connect, gcloud-aio-storage, gcsfs, Neo4j, pymysql, SQLite, flask-appbuilder, asgiref, werkzeug, a2wsgi, Apache, Vite, flask-sqlalchemy, pyspnego, cryptography, flask-login, keyring, google-auth-httplib2, google-auth-oauthlib, azure-ai-projects, pydantic-ai-slim, cohere, nbconvert, aiosmtplib, beautifulsoup4, icalendar, sendgrid, flask-wtf, wtforms, msgspec, marshmallow, azure-mgmt-containerinstance, azure-mgmt-resource, Flower, OpenTelemetry, kubernetes-asyncio, python-on-whales, 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
- Only in dagster: azure-storage-file-datalake, db-dtypes, dbt-core, mysql-connector-python, dlt, clickhouse-driver, deltalake, MySQL, Google Cloud Storage, graphene, pyspark, starlette, Next.js, React Router, lru-cache, bokeh, questionary, oauth2client, deepeval, OpenAI, MLflow, markdown, wordcloud, cattrs, validators, Prefect, azure-core, coloredlogs, Datadog, prometheus-client, validator, highlight.js, react-markdown, remark, remark-gfm, codemirror, Radix UI, TanStack, @blueprintjs/core, @react-hook/resize-observer, react-day-picker, sonner, chartjs-adapter-date-fns, Chart.js, dagre, react-chartjs-2, visx, @rjsf/core, ansi-to-react, chartjs-plugin-zoom, rehype-highlight, rehype-sanitize, remark-breaks, rjsf

## Side by side

| | airflow | dagster |
|---|---|---|
| Size | 2,200,257 lines written, 4,596 code files | 1,373,416 lines written, 3,347 code files |
| Who writes it | 0.7% of its commits signed by AI. With Claude Code, GitHub Copilot, Cursor, and Devin | 1.4% of its commits signed by AI. With Claude Code, Gemini CLI, and Aider |
| Activity | Last push November 5, 2026, 41,804 commits, 47,376 stars | Last push November 7, 2026, 28,090 commits, 16,376 stars |
| Tests | 4,949 test files. 53.3% of its code files have a test that imports them | 2,682 test files. 15.3% 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 dagster?

airflow, with 2,200,257 lines written; dagster has 1,373,416.

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

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

airflow, with 47,376 stars; dagster has 16,376.

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

### 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](https://github.com/apache/airflow/tree/322c178e05b6621b9577e62e66964c1f4c0b590f)

### 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](https://github.com/dagster-io/dagster/commits)

### 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](https://seerepo.com/r/dagster-io/dagster/ai)

## Sources

- apache/airflow: Read on November 5, 2026, at commit 322c178 (https://github.com/apache/airflow/tree/322c178e05b6621b9577e62e66964c1f4c0b590f)
- dagster-io/dagster: Read on November 7, 2026, at commit 55208da (https://github.com/dagster-io/dagster/tree/55208da7a9dc8fe3cea511d39508b97f73ab8769)

## 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.