LangSmith
AI agent and LLM observability platform with end-to-end OpenTelemetry support, Agent Builder, prompt playground, and multi-framework tracing.
freemium
Open ToolOpenAI
GPT-5.2 and o-series reasoning models with the Responses API, AgentKit, and built-in tools for web search, code execution, and computer use.
usage-based
Open ToolRedis
In-memory data store with Vector Sets (Redis 8 preview) for native vector search, semantic caching, JSON document storage, and session management for AI agents.
open-source-or-cloud
Open ToolSupabase
Postgres backend with built-in pgvector for vector search, hybrid search (BM25 + vector), auth, real-time subscriptions, edge functions, and row-level security.
freemium
Open ToolWeaviate
Open-source vector engine with built-in Weaviate Agents (Query, Transformation, Personalization), Hybrid Search 2.0, and multi-tenant architecture.
open-source-or-cloud
Open Tool