Meilisearch
Meilisearch is the pragmatic middle between bolting pgvector onto Postgres and running an Elasticsearch cluster: hybrid retrieval works out of the box and the open-source licence means the cloud bill is a convenience, not a lock-in. The limit is scope — it is a retrieval layer, not a full RAG framework, and there is no permanently free cloud tier.
Pros
- Open source engine you can self-host, so the managed service is optional
- Hybrid retrieval blends lexical and vector search in a single query
- Documented integrations with LangChain and LlamaIndex
- Cloud entry at $20/month with usage- or resource-based billing and a card-free 14-day trial
Cons
- No permanently free cloud tier — the free option is self-hosting and running it yourself
- Retrieval only; chunking, prompt assembly and generation stay your problem
- SLAs, SSO SAML and SOC 2 sit behind quoted enterprise plans