{"slug":"flask-vs-starlette)","title":"Flask vs Starlette","url":"https://www.aversusb.net/compare/flask-vs-starlette)","faqCount":5,"faqs":[{"question":"Which is faster, Flask or Starlette?","answer":"Starlette is significantly faster, handling ~8,500 requests per second compared to Flask's ~2,100 req/s in benchmarks. This is because Starlette uses ASGI (async) while Flask uses WSGI (synchronous). For high-concurrency scenarios, Starlette can handle 4x the load."},{"question":"Can I use async/await with Flask?","answer":"Flask added experimental async support in version 2.0, but it's not native like Starlette. You can define async route handlers, but the underlying WSGI server still handles requests synchronously. For true async performance, Starlette is the better choice."},{"question":"Is Flask still relevant in 2026?","answer":"Yes, Flask remains highly relevant with 2.5M+ production deployments and 67K GitHub stars. It excels for traditional web applications, monoliths, and educational purposes. However, for modern microservices and real-time APIs, Starlette is the better fit."},{"question":"Does Starlette have WebSocket support?","answer":"Yes, Starlette has built-in WebSocket support for real-time bidirectional communication. Flask requires the Flask-SocketIO extension to add similar functionality, making Starlette the native choice for real-time applications."},{"question":"Which has a larger ecosystem of extensions?","answer":"Flask dominates with 800+ third-party extensions (Flask-SQLAlchemy, Flask-Login, Flask-RESTful, etc.), while Starlette has ~150. Flask's larger ecosystem makes it better for projects needing pre-built integrations, though Starlette's minimalism encourages custom solutions."}],"faqPageSchema":{"@context":"https://schema.org","@type":"FAQPage","@id":"https://www.aversusb.net/compare/flask-vs-starlette)#faq","url":"https://www.aversusb.net/compare/flask-vs-starlette)","inLanguage":"en-US","name":"Flask vs Starlette — FAQ","description":"Frequently asked questions about Flask vs Starlette","dateModified":"2026-07-07T13:39:30.488Z","author":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"},"publisher":{"@type":"Organization","@id":"https://www.aversusb.net/#organization","name":"A Versus B"},"isPartOf":{"@type":"Article","@id":"https://www.aversusb.net/compare/flask-vs-starlette)#article"},"license":"https://creativecommons.org/licenses/by/4.0/","speakable":{"@type":"SpeakableSpecification","cssSelector":["#faq",".faq-item"]},"mainEntity":[{"@type":"Question","name":"Which is faster, Flask or Starlette?","acceptedAnswer":{"@type":"Answer","text":"Starlette is significantly faster, handling ~8,500 requests per second compared to Flask's ~2,100 req/s in benchmarks. This is because Starlette uses ASGI (async) while Flask uses WSGI (synchronous). For high-concurrency scenarios, Starlette can handle 4x the load.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/flask-vs-starlette)"}},{"@type":"Question","name":"Can I use async/await with Flask?","acceptedAnswer":{"@type":"Answer","text":"Flask added experimental async support in version 2.0, but it's not native like Starlette. You can define async route handlers, but the underlying WSGI server still handles requests synchronously. For true async performance, Starlette is the better choice.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/flask-vs-starlette)"}},{"@type":"Question","name":"Is Flask still relevant in 2026?","acceptedAnswer":{"@type":"Answer","text":"Yes, Flask remains highly relevant with 2.5M+ production deployments and 67K GitHub stars. It excels for traditional web applications, monoliths, and educational purposes. However, for modern microservices and real-time APIs, Starlette is the better fit.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/flask-vs-starlette)"}},{"@type":"Question","name":"Does Starlette have WebSocket support?","acceptedAnswer":{"@type":"Answer","text":"Yes, Starlette has built-in WebSocket support for real-time bidirectional communication. Flask requires the Flask-SocketIO extension to add similar functionality, making Starlette the native choice for real-time applications.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/flask-vs-starlette)"}},{"@type":"Question","name":"Which has a larger ecosystem of extensions?","acceptedAnswer":{"@type":"Answer","text":"Flask dominates with 800+ third-party extensions (Flask-SQLAlchemy, Flask-Login, Flask-RESTful, etc.), while Starlette has ~150. Flask's larger ecosystem makes it better for projects needing pre-built integrations, though Starlette's minimalism encourages custom solutions.","inLanguage":"en-US","url":"https://www.aversusb.net/compare/flask-vs-starlette)"}}]}}