The best alternatives to Astra Serverless Database are Hasura, PlanetScale, and Contential. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Multilingual Speech-to-Text API with superhuman accuracy
Hasura helps developers and organisations build and ship modern applications & APIs faster by making data instantly accessible over a realtime GraphQL & REST APIs.
Contential is a blazing fast data store allowing you to store your data across multiple regions, and access it in milliseconds with auto-generated GraphQL schema and built-in text search.
Store any unstructured JSON data without constraints on primary keys, property names or embedded objects. Map, reduce, and receive query results to your webhooks. Any valid Javascript works as a query, ending limitations imposed by proprietary query languages.