Agents-Flex records 5,088 monthly visits with +202.3% month-over-month growth and Free / Open Source pricing. Mastra records 318,954 monthly visits with -5% growth and Freemium, Contact for Pricing pricing.
Open-source Java framework for building AI agents and LLM apps
The TypeScript framework for building, deploying, and observing AI agents
| Dimension / Metric | | |
|---|---|---|
| Official Domain | agentsflex.com | mastra.ai |
| Pricing Model | Free / Open Source | Freemium, Contact for Pricing |
| Monthly Visits | 5.09K (5,088) | 318.95K (318,954) |
| MoM Traffic Delta | +3.41K (+202.3%) | -16.74K (-5%) |
| Primary Market & Share | 🇨🇳 China (100%) | 🇺🇸 United States (21.3%) |
| Direct Visits / mo | 426 | 139.22K |
| User Rating | 4.6 | 4.6 |
| Supported Platforms | Website | Website |
Open-source Java framework for building AI agents and LLM apps
Configure any supported provider with an API key and model name, then call chat() for a consistent interface across models.
AgentRunner combines policy and middleware to coordinate models, tools and sandboxes inside a single execution flow.
Reusable, versionable capability definitions that bundle a SKILL.md, scripts and assets, discovered from local directories or remote storage.
Add knowledge retrieval, image generation and OCR pipelines on demand, mixing synchronous and asynchronous execution styles.
The TypeScript framework for building, deploying, and observing AI agents
Define agents with instructions, models, tools, and runtime behavior, then compose typed workflow steps with retries and branching in TypeScript.
Give agents long-lived context with observational memory, semantic recall, and thread-aware storage.
Traces, metrics, logs, and datasets show every model call, tool call, and handoff in a searchable timeline.
Score agent runs against repeatable checks and experiments before changes reach production.
Free / Open-sourceRun and build with open AI models locally or in the cloud
Free / Open-sourceRun and build with open AI models locally or in the cloud
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
SpecialistA robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors.
SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
SpecialistA developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps.
Web search API and crawler built for AI agents
Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
Free / Open-sourceA comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript.
Free / Open-sourceTurn any document into AI-ready context with agentic parsing and extraction
Free / Open-sourceTurn any document into AI-ready context with agentic parsing and extraction
Baidu's one-stop platform for building, distributing and monetizing AI agents
Baidu's one-stop platform for building, distributing and monetizing AI agents
The managed vector database and knowledge engine for production AI
Free / Open-sourceAn open-source AI automation platform combining conversational workflow drafting, visual flow builders, and prebuilt app connectors.
Free / Open-sourceAn open-source AI automation platform combining conversational workflow drafting, visual flow builders, and prebuilt app connectors.
SpecialistAn open-source AI workspace combining visual workflows and code for building and governing agent systems.
Free / Open-sourceA popular Python-based agent framework offering modular building blocks, tailored for Python developers rather than TypeScript.
Free / Open-sourceAn open-source TypeScript framework for building agentic applications where agents and user interfaces share capabilities directly.
Free / Open-sourceAn open-source TypeScript framework for building agentic applications where agents and user interfaces share capabilities directly.
