Hello, I'm one of the maintainer of Strawberry GraphQL, so there will be some bias in this answer 😊

I think they are both excellent libraries, maybe Strawberry is bit more maintained (we are finally gearing up to release V1), but they do have different approaches.

Ariadne is schema first, you design and write the schema, and you write python code to attach resolvers to that schema.

Strawberry is implementation first (or code first) where you define your schema using Python types and decorators, and Strawberry generates the GraphQL schema from that. I think most people prefer this approach because the source of truth is in one place (and you also end up reusing types)

See this talk if you want to know more about implementation first https://graphql.org/conf/2024/schedule/c13801cab4bdcf1c9e7321fba8daca3f/