Agno

Free tier

Open-source agent framework and high-performance runtime for building multi-agent systems at scale

Free tier available·Technical·Powered by Multi-provider (30+ model providers)·API available·Open source

Key strengths

Open-source Python framework for rapid agent developmentAgentOS runtime with 50+ API endpoints out of the boxSupports 30+ LLM providers behind a single unified API surfaceBYOC (Bring Your Own Cloud) with full data privacy — no data leaves your environmentBuilt-in governance: HITL approval flows, RBAC, audit logs, and structured tracing

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Multi-agent orchestration – Define and run teams of agents with shared memory, knowledge bases, and tool access using the Python SDK
Production API deployment – Expose agent capabilities via 50+ auto-generated REST/SSE endpoints with session, trace, and memory management included
Custom LLM routing – Route agent workloads across 30+ model providers (OpenAI, Anthropic, etc.) through a single unified API surface
HITL & governance pipelines – Implement human-in-the-loop approval flows, RBAC policies, and audit logging for sensitive agentic actions
Observability & evaluation – Export structured traces to existing monitoring tools; evaluate agents across accuracy, reliability, and performance dimensions
BYOC secure deployments – Run AgentOS as a stateless FastAPI service on AWS, GCP, Railway, or airgapped infrastructure with full data residency control