--- title: "mastra vs ai" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/mastra-ai-mastra-vs-vercel-ai" tools: ["mastra-ai-mastra", "vercel-ai"] --- # mastra vs ai *GraphCanon updated Aug 16, 2026* ## Verdict Pick mastra if mastra is a modern TypeScript framework tailored specifically for building AI-powered applications and agents, supporting technologies like chatbots, language models, and TTS; pick ai if the AI Toolkit for TypeScript offers an open-source library from Next.js creators for building AI-powered applications and agents in TypeScript. [mastra](https://mastra.ai) reports 27k GitHub stars, 2.6k forks, and 469 open issues, last pushed Aug 16, 2026. [ai](https://ai-sdk.dev) has 26k stars, 4.9k forks, and 1.7k open issues, last pushed Aug 5, 2026. Figures are from public GitHub metadata via [mastra's repository](https://github.com/mastra-ai/mastra) and [ai's repository](https://github.com/vercel/ai). | | [mastra](/tools/mastra-ai-mastra.md) | [ai](/tools/vercel-ai.md) | | --- | --- | --- | | Tagline | Modern TypeScript framework for AI-powered applications and agents | AI Toolkit for TypeScript | | Stars | 27,229 | 26,035 | | Forks | 2,642 | 4,914 | | Open issues | 469 | 1,747 | | Language | TypeScript | TypeScript | | Adopt for | Mastra is a modern TypeScript framework tailored specifically for building AI-powered applications and agents, supporting technologies like chatbots, language models, and TTS. | The AI Toolkit for TypeScript offers an open-source library from Next.js creators for building AI-powered applications and agents in TypeScript. | | Persona | - | - | | Runtime | - | - | | License | Mastra operates under a dual-license model with its core components licensed under Apache-2.0 and enterprise-exclusive features under the proprietary Mastra Enterprise License. | Other | | Categories | AI Agents, Evaluation & Observability, LLM Frameworks, Speech & Audio | AI Agents, LLM Frameworks | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [mastra](/tools/mastra-ai-mastra.md) | [ai](/tools/vercel-ai.md) | | --- | --- | --- | | Open issues (now) | 469 | 1.7k | | Stars delta | +954 (30d) | Unknown | | Open issues delta | +66 (30d) | Unknown | | Full report | [trust report](/tools/mastra-ai-mastra/trust.md) | [trust report](/tools/vercel-ai/trust.md) | ## Decision facts: mastra - **Pricing:** freemium - Free for open-source Apache-licensed portions; Mastra Enterprise License subscription required for full feature access. - **Requirements:** Project must be developed in TypeScript.; JavaScript and TypeScript ecosystems (Node.js, NextJS) are prerequisites for leveraging Mastra's integrations fully. - **Adopt for:** Mastra is a modern TypeScript framework tailored specifically for building AI-powered applications and agents, supporting technologies like chatbots, language models, and TTS. - **License detail:** Mastra operates under a dual-license model with its core components licensed under Apache-2.0 and enterprise-exclusive features under the proprietary Mastra Enterprise License. ## Decision facts: ai - **Adopt for:** The AI Toolkit for TypeScript offers an open-source library from Next.js creators for building AI-powered applications and agents in TypeScript. ## Choose when ### Choose mastra if… - Pricing: Free for open-source Apache-licensed portions; Mastra Enterprise License subscription required for full feature access.. - Requirements: Project must be developed in TypeScript.; JavaScript and TypeScript ecosystems (Node.js, NextJS) are prerequisites for leveraging Mastra's integrations fully.. - Tags unique to mastra: agents, ai, chatbots, evals. - Also covers Evaluation & Observability, Speech & Audio. - You should use Mastra when you are developing AI-driven applications or bots that require integration with technologies such as text-to-speech (TTS) or complex chatbot functionalities. ### Choose ai if… - Tags unique to ai: anthropic, artificial-intelligence, gemini, generative-ai. - If you are targeting development specifically with TypeScript and want to harness libraries and frameworks familiar within the ecosystem of Next.js. ## When NOT to use mastra - Mastra may not be suitable if your application does not require TypeScript and prefers simpler setup or non-TypeScript environments. - Avoid using Mastra if enterprise-level features or a dual-license model do not align with your project’s requirements or budget, especially when cost-free, fully open-source alternatives exist that - If you are working on smaller projects where the overhead of a comprehensive framework like Mastra overwhelms the available resources or the scope of work is minimal, consider lighter-weight solutions ## When NOT to use ai - When your project is not reliant on TypeScript or does not benefit from the specific patterns and integrations designed for Next.js. - If you need broader language compatibility beyond JavaScript/TypeScript or are using a framework that competes with Next.js, such as Nuxt.js. ## Common questions ### What is the difference between mastra and ai? mastra: Modern TypeScript framework for AI-powered applications and agents. ai: AI Toolkit for TypeScript. See the comparison table for live GitHub stats and shared categories. ### When should I choose mastra over ai? Choose mastra over ai when Pricing: Free for open-source Apache-licensed portions; Mastra Enterprise License subscription required for full feature access.; Requirements: Project must be developed in TypeScript.; JavaScript and TypeScript ecosystems (Node.js, NextJS) are prerequisites for leveraging Mastra's integrations fully.; Tags unique to mastra: agents, ai, chatbots, evals; Also covers Evaluation & Observability, Speech & Audio; You should use Mastra when you are developing AI-driven applications or bots that require integration with technologies such as text-to-speech (TTS) or complex chatbot functionalities. ### When should I choose ai over mastra? Choose ai over mastra when Tags unique to ai: anthropic, artificial-intelligence, gemini, generative-ai; If you are targeting development specifically with TypeScript and want to harness libraries and frameworks familiar within the ecosystem of Next.js. ### When should I avoid mastra? Mastra may not be suitable if your application does not require TypeScript and prefers simpler setup or non-TypeScript environments. Avoid using Mastra if enterprise-level features or a dual-license model do not align with your project’s requirements or budget, especially when cost-free, fully open-source alternatives exist that If you are working on smaller projects where the overhead of a comprehensive framework like Mastra overwhelms the available resources or the scope of work is minimal, consider lighter-weight solutions ### When should I avoid ai? When your project is not reliant on TypeScript or does not benefit from the specific patterns and integrations designed for Next.js. If you need broader language compatibility beyond JavaScript/TypeScript or are using a framework that competes with Next.js, such as Nuxt.js. ### Is mastra or ai more popular on GitHub? mastra has more GitHub stars (27,229 vs 26,035). Stars measure visibility, not whether either tool fits your constraints. ### Are mastra and ai open source? Yes - both are open-source projects on GitHub (mastra: Other, ai: Other). ### Where can I find alternatives to mastra or ai? GraphCanon lists graph-backed alternatives at [mastra alternatives](/tools/mastra-ai-mastra/alternatives) and [ai alternatives](/tools/vercel-ai/alternatives) ([mastra markdown twin](/tools/mastra-ai-mastra/alternatives.md), [ai markdown twin](/tools/vercel-ai/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/mastra-ai-mastra-vs-vercel-ai.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, mastra or ai? mastra: Very active. ai: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for mastra and ai? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [mastra trust report](/tools/mastra-ai-mastra/trust); [ai trust report](/tools/vercel-ai/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=mastra-ai-mastra`](/api/graphcanon/graph?tool=mastra-ai-mastra) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_