VoltAgent · TypeScript AI Agent Engineering Platform
An open-source TypeScript framework for building multi-agent AI systems with memory, workflows, and tools, paired with the freemium VoltOps Console for observability and deployment.
Best for
TypeScript multi-agent apps with built-in observability
Not ideal for
Python-first teams or those needing a no-code builder
Who it's for
TypeScript developers building multi-agent AI applications with observability requirements
Framework
Free
VoltOps Developer
$0/month
Billed monthly
VoltOps Core
$50/month
Billed monthly
VoltOps Pro
$250/month
Billed monthly
Enterprise
Custom
Free tier limits: The framework is free. VoltOps Developer: 1 seat, 1 project, 250 traces/month, 7-day retention.
Mastra
TypeScript-first AI agents and workflows for Node.js teams
FreemiumLangChain
Developers building production multi-agent systems that need fine-grained control over state, execution flow, and human-in-the-loop checkpoints — and who are willing to trade setup time for that control
FreeVoltAgent describes itself as an AI Agent Engineering Platform built on an open-source TypeScript agent framework. The framework provides agents, tools (typed with Zod), memory, RAG, guardrails, MCP client and server support, voice (text-to-speech and speech-to-text), evals, and resumable streaming, plus a declarative workflow engine with suspend and resume for human-in-the-loop steps and supervisor/sub-agent orchestration for multi-agent systems. Agents can be served over HTTP using the included Hono server integration. VoltOps Console is a separate freemium service for observability and deployment: a free Developer tier (250 traces/month), Core at $50/month, Pro at $250/month, and custom Enterprise, with one-click GitHub deployment to managed infrastructure on paid plans; self-hosting VoltOps requires Enterprise. The core framework is MIT-licensed and free. Setup is straightforward via npm create voltagent-app.
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