PricingFree (self-hosted, Apache 2.0)Starter ($0/mo + usage)Team ($250/mo + usage)Custom Enterprise
Free (1 starter index, 2GB storage)$50/mo Standard (usage-based)Custom Enterprise
SDK Languagespythonjavascripttypescriptruby
pythonjavascripttypescriptgojava
Frameworkslangchainllamaindexvercel-aihaystackdspy
langchainllamaindexvercel-aiopenai-agentshaystack
Best ForAI-native developer experience — the fastest path from `pip install` to a working RAG prototype, with a managed cloud when you're ready
Production RAG and agent memory at scale — serverless billing, generous free tier, and a managed experience with zero ops
LimitationsYounger than Pinecone or Weaviate at scale; fewer index tuning knobs (HNSW only); compliance certifications are still maturing
Cloud-only with no self-hosted option; vendor lock-in on proprietary index format; advanced features like dedicated read nodes add cost quickly at scale