# Alternatives to Mastra Mastra is an open-source TypeScript framework for building AI agents, workflows and RAG, from the team behind Gatsby. Mastra ranks #5 of 10 in AI agent frameworks, with an Alt Score of 93. It is licensed under Apache License 2.0 and open source with paid hosting from $250/month. 13 of 13 checklist rows are verified against a public source. Source: https://altcatalog.com/alternatives/mastra/ Category: AI agent frameworks ## Where Mastra stands out - **Language (JS/TS)** — 3 of 9 apps with a verified answer have this ## Overview - **Who it's for**: TypeScript/JavaScript developers and teams building production AI agents and workflows who want a framework-native fit with the modern JS ecosystem (React, Next.js, Node) rather than a Python-first stack. - **What you get**: An open-source (Apache-2.0) TypeScript framework for building agents, graph-based workflows, tool use, memory, and RAG, plus an optional Mastra Cloud managed deployment platform for shipping and observing agents in production. - **How it works**: Developers define agents and tools in TypeScript and compose them directly or orchestrate them with a graph-based workflow engine (.then(), .branch(), .parallel()) that supports suspend/resume for human-in-the-loop steps; projects run locally via the Mastra CLI and dev server, or are deployed with one command to Mastra Cloud for hosted execution, tracing, and metrics. ## Profile - **License**: Apache License 2.0 (verified 2026-07-16) - **Pricing model**: OSS + paid hosting (verified 2026-07-16) - **Starts at**: $250/month (verified 2026-07-16) - **Platforms**: ? - **Status**: active (verified 2026-07-16) ## Ranked alternatives | # | App | Alt Score | Licence | Platforms | |---|-----|-----------|---------|-----------| | 1 | [LangGraph](https://altcatalog.com/alternatives/langgraph.md) | 100 | MIT License | Linux, macOS, Windows, Web | | 2 | [LlamaIndex](https://altcatalog.com/alternatives/llamaindex.md) | 96 | MIT License | ? | | 3 | [CrewAI](https://altcatalog.com/alternatives/crewai.md) | 93 | MIT | Linux, macOS, Windows, Web | | 4 | [Haystack](https://altcatalog.com/alternatives/haystack.md) | 93 | Apache-2.0 | ? | | 5 | [Agno](https://altcatalog.com/alternatives/agno.md) | 86 | Apache-2.0 | ? | | 6 | [AutoGen](https://altcatalog.com/alternatives/autogen.md) | 86 | MIT | Linux, macOS, Windows | | 7 | [Semantic Kernel](https://altcatalog.com/alternatives/semantic-kernel.md) | 86 | MIT | Linux, macOS, Windows | | 8 | [OpenAI Agents SDK](https://altcatalog.com/alternatives/openai-agents-sdk.md) | 83 | MIT | ? | | 9 | [Pydantic AI](https://altcatalog.com/alternatives/pydantic-ai.md) | 79 | MIT | ? | Alt Score = Verified coverage (90%) + Visibility (10%). See https://altcatalog.com/how-alt-score-works/ ## Feature comparison Legend: Yes / No / Partial / ? (not verified). | AI agent frameworks checklist | Mastra | LangGraph | LlamaIndex | CrewAI | Haystack | Agno | |---|---|---|---|---|---|---| | Pricing model | OSS + paid hosting | OSS + paid hosting | OSS + paid hosting | OSS + paid hosting | OSS + paid hosting | OSS + paid hosting | | Starts at | $250/month | $39/seat/month (LangSmith Plus plan, includes LangGraph hosted deployment; usage-based charges apply on top) | $50/month (LlamaParse Starter) | Free | Free | $150/month | | License | Apache License 2.0 | MIT License | MIT License | MIT | Apache-2.0 | Apache-2.0 | | Platforms | ? | Linux, macOS, Windows, Web | ? | Linux, macOS, Windows, Web | ? | ? | | Open source | Yes | Yes | Yes | Yes | Yes | Yes | | Language (Python) | No | Yes | Yes | Yes | Yes | ? | | Language (JS/TS) | Yes | Yes | Partial | No | No | ? | | Multi-agent orchestration | Yes | Yes | Yes | Yes | Yes | Yes | | Graph / stateful workflows | Yes | Yes | Yes | Yes | Yes | Yes | | Human-in-the-loop | Yes | Yes | Yes | Yes | Yes | Yes | | Streaming support | Yes | Yes | Yes | Yes | Yes | Yes | | Built-in memory / state persistence | Yes | Yes | Yes | Yes | Yes | Yes | | Tool / function calling | Yes | Yes | Yes | Yes | Yes | Yes | | Model-agnostic (multi-provider) | Yes | Yes | Yes | Yes | Yes | Yes | | Observability / tracing integration | Yes | Yes | Yes | Yes | Yes | Yes | | Managed / hosted deployment | Yes | Yes | Yes | Yes | Yes | Yes | | RAG support | Yes | Yes | Yes | Yes | Yes | Yes | ## Sources Sources for Mastra. Each alternative is sourced on its own page. - **Starts at**: $250/month — (verified 2026-07-16) - Note: Cheapest paid tier (Teams); a Starter tier is free ($0/month, 'Free for everyone'). - Quote: “Teams For growing teams $250 / month” - **Status**: active — (verified 2026-07-16) - Note: pushed_at": "2026-07-16T22:23:56Z", "archived": false" - **License**: Apache License 2.0 — (verified 2026-07-16) - Note: Apache License 2.0" as defined below." — Dual-license model: the core framework and vast majority of the codebase is Apache-2.0; code under any directory named ee/ (enterprise features, e.g. packages/core/src/auth/ee/) is source-available un - Quote: “Content outside of the above-mentioned directories or restrictions is available under the ” - **Pricing model**: OSS + paid hosting — (verified 2026-07-16) - Quote: “Pricing that scales with your agents Build your agent with our open source framework. ... Starter Free for everyone $0 / month ... Teams For growing teams $250 / month ... Enterprise For teams at scal” - **Open source**: Yes — (verified 2026-07-16) - Quote: “Apache License 2.0 — The core framework and the vast majority of this codebase is open source under Apache-2.0.” - **Language (Python)**: No — (verified 2026-07-16) - Note: README frames Mastra as TypeScript-only; no official Python package exists (pypi.org/pypi/mastra/json and pypi.org/pypi/mastra-ai/json both return 404). - Quote: “Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.” - **Language (JS/TS)**: Yes — (verified 2026-07-16) - Quote: “Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.” - **Multi-agent orchestration**: Yes — (verified 2026-07-16) - Quote: “A multi-agent system distributes a task across multiple agents instead of asking one agent to do everything. In Mastra, this usually means combining agents, workflows, or both so each part of the syst” - **Graph / stateful workflows**: Yes — (verified 2026-07-16) - Quote: “Workflows - When you need explicit control over execution, use Mastra's graph-based workflow engine to orchestrate complex multi-step processes. Mastra workflows use an intuitive syntax for control fl” - **Human-in-the-loop**: Yes — (verified 2026-07-16) - Quote: “Workflows can be paused at any step to collect additional data, wait for API callbacks, throttle costly operations, or request human-in-the-loop input.” - **Streaming support**: Yes — (verified 2026-07-16) - Quote: “Mastra supports real-time, incremental responses from agents and workflows, allowing users to see output as it's generated instead of waiting for completion.” - **Built-in memory / state persistence**: Yes — (verified 2026-07-16) - Quote: “Memory enables your agent to remember user messages, agent replies, and tool results across interactions, giving it the context it needs to stay consistent, maintain conversation flow, and produce bet” - **Tool / function calling**: Yes — (verified 2026-07-16) - Quote: “Agents use tools to call APIs, query databases, or run custom functions from your codebase. Tools give agents capabilities beyond language generation by providing structured access to data and perform” - **Model-agnostic (multi-provider)**: Yes — (verified 2026-07-16) - Quote: “Mastra provides a unified interface for working with LLMs across multiple providers, giving you access to 4856 models from 156 providers through a single API.” - **Observability / tracing integration**: Yes — (verified 2026-07-16) - Quote: “Mastra also supports external tracing providers like Langfuse, Datadog, and any OpenTelemetry-compatible platform.” - **Managed / hosted deployment**: Yes — (verified 2026-07-16) - Note: This is the Mastra Cloud / Server managed deployment offering, with paid Teams/Enterprise tiers at mastra.ai/pricing. - Quote: “Ship Your Mastra Agent in One Command Push code, get a URL. Routing, scaling, and infrastructure are handled for you.” - **RAG support**: Yes — (verified 2026-07-16) - Quote: “RAG in Mastra helps you enhance LLM outputs by incorporating relevant context from your own data sources, improving accuracy and grounding responses in real information.” --- Ranked by verified data, never by who paid. https://altcatalog.com/trust/