# Mastra vs Rivet.dev

Mastra records 318,954 monthly visits with -5% month-over-month growth and Freemium, Contact for Pricing pricing. Rivet.dev records 21,359 monthly visits with -44.3% growth and Freemium, Contact for Pricing pricing.

| Metric | [Mastra](https://openaitools.app/tool/mastra) | [Rivet.dev](https://openaitools.app/tool/rivet-dev) |
| :--- | :--- | :--- |
| Website URL | https://mastra.ai | https://rivet.dev |
| Categories | AI Agent, AI Developer Tools, AI Workflow, AI App Builder | AI Agent, AI Workflow, AI Developer Tools, AI App Builder |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 318,954 | 21,359 |
| MoM Growth Rate | -5% | -44.3% |
| Primary Market | United States | United States |
| Direct Visits | 139,222 | 10,710 |
| Review Score | 4.6 | 4.5 |
| Saved Count | 0 | 0 |
| Supported Platforms | Website | Website |

## Mastra

Mastra is an open-source TypeScript framework designed for developers who want to build AI agents and workflows in the same language as the rest of their stack. Instead of stitching together a Python agent library plus a separate orchestration layer, teams define typed agents, workflows, and tools directly in TypeScript. Core building blocks include Agents (instructions, models, tools, runtime behavior), Workflows (typed steps, retries, branching), a Harness for multi-mode agents, and Memory that adds durable context through observational memory and semantic recall.

Beyond the framework, Mastra ships an opinionated observability layer: traces, metrics, logs, evaluations, datasets, and scorers, so you can see exactly what an agent did on every run and measure quality before shipping changes. Agents can register on a single Mastra server that runs locally and deploys to Mastra Cloud, and integrations cover major model providers plus MCP servers for tool use.

The project is Apache 2.0 open source and can be self-hosted, while Mastra Cloud adds managed deployment, collaboration, and enterprise controls such as RBAC, SSO, and VPC deployment. Pricing follows a freemium model with a free open-source path and contact-for-pricing cloud plans.

**Pricing & Plans:** Freemium. The framework is Apache 2.0 open source and free to self-host. Mastra Cloud offers paid/managed tiers, with enterprise pricing available on request.

- **Typed agents and workflows:** Define agents with instructions, models, tools, and runtime behavior, then compose typed workflow steps with retries and branching in TypeScript.
- **Durable agent memory:** Give agents long-lived context with observational memory, semantic recall, and thread-aware storage.
- **Built-in observability:** Traces, metrics, logs, and datasets show every model call, tool call, and handoff in a searchable timeline.
- **Evaluations and scorers:** Score agent runs against repeatable checks and experiments before changes reach production.
- **MCP and model integrations:** Connect MCP servers for tool use and route across major model providers including OpenAI, Anthropic, Google Gemini, and xAI.

**Strengths:** TypeScript-first design fits existing JavaScript and Node.js stacks; Apache 2.0 open source with a free self-hosted path; Observability, evals, and datasets are built in rather than bolted on; Memory, workflows, MCP, and multi-provider routing included

**Limitations:** Requires TypeScript and developer familiarity to get value; Cloud and enterprise pricing is quote-based with limited public detail; Fast-moving framework means APIs can change between releases; Best suited to engineering teams, not no-code users

[Profile (Markdown)](https://openaitools.app/tool/mastra.md)

## Rivet.dev

At its core Rivet replaces the container per agent with an in-process primitive. An Actor runs inside your existing Node.js or Bun backend rather than in its own container or VM, which is why Rivet reports cold starts measured in single-digit milliseconds and a footprint of tens of kilobytes per Actor instead of hundreds of megabytes. Each Actor carries a SQLite database for memory, can access a filesystem and shell, sleeps when idle, and wakes with its durable state ready for the next request.

The platform handles the operational pieces teams usually build themselves: fault tolerance that reschedules Actors when a node goes down, multi-region placement that routes requests to wherever an Actor currently lives, end-to-end type safety where Actor definitions generate client types, and scheduling via cron or self-set timestamps. Storage is pulled apart into two tiers — a fast SSD for instant writes and object storage that settles writes at a fraction of the cost — so running many small databases stays affordable.

Rivet positions itself as infrastructure for the "agentic era" and can be deployed as a managed cloud, inside your own VPC through a bring-your-own-cloud model, or fully self-hosted down to air-gapped networks. It is open source under Apache 2.0, backed by Y Combinator and a16z Speedrun, and integrates with popular coding agents and frameworks.

**Pricing & Plans:** Rivet Cloud uses a plan-plus-nodes model. The control plane is Free ($0) for prototyping, Hobby at $10/month, Team at $120/month, and Enterprise at $900/month, each raising control-plane redundancy, Actor Node caps, and support. Actor Nodes are billed per month on top, from $4.20 (R-5) to $94.50 (R-160). Self-hosting is free and open source under Apache 2.0, and startups from Y Combinator or a16z Speedrun get 50% off the Team plan for 12 months.

- **Durable actors with persistent state:** Every Actor gets a SQLite database and a filesystem, so an agent's memory and progress survive restarts and idle periods without a separate database.
- **Lightweight secure sandboxing:** Run untrusted or AI-generated code on your own infrastructure with fine-grained control over network access, filesystem permissions, and resource limits.
- **Fault tolerance and workflows:** A node failure reschedules its Actors elsewhere with state intact, and multi-step work replays after a crash — with no checkpointing harness to build yourself.
- **Realtime and multiplayer:** Address an Actor directly over HTTP or hold a live WebSocket, and use the React SDK to subscribe components to an Actor's state in real time.
- **One-binary deployment and observability:** Ship with a single stateless Rust binary, embeds storage in S3-compatible buckets, and emits OpenTelemetry traces, metrics, and logs to your existing collector.

**Strengths:** Four-digit millisecond cold starts and a very small per-Actor memory footprint let a single server host far more agents; Open source (Apache 2.0) with a single Rust binary, so it can be self-hosted, run in a VPC, or air-gapped; Durable state via per-Actor SQLite plus object-storage-backed tiers keeps agents restart-safe and cheap; Strong developer ergonomics: typed SDKs, a React SDK, WebSocket networking, and OpenTelemetry baked in

**Limitations:** Requires Node.js or Bun and a working Rust-based control plane deployment for self-hosting, so it favors backend engineers over no-code users; Advanced durability and sandboxing concepts (Actors, WarpDrive storage) carry a learning curve; Managed cloud cost scales with Actor Nodes, which can climb for many mid-sized/sized nodes; Enterprise features like multi-tenancy and hardened compliance guidance sit behind sales conversations

[Profile (Markdown)](https://openaitools.app/tool/rivet-dev.md)

## Frequently Asked Questions

### How do Mastra and Rivet.dev compare in monthly traffic?

Mastra has 318,954 monthly visits, while Rivet.dev has 21,359. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Mastra has a month-over-month growth rate of -5%; Rivet.dev has -44.3%.

### How does pricing compare?

Mastra: Freemium, Contact for Pricing. Freemium. The framework is Apache 2.0 open source and free to self-host. Mastra Cloud offers paid/managed tiers, with enterprise pricing available on request. Rivet.dev: Freemium, Contact for Pricing. Rivet Cloud uses a plan-plus-nodes model. The control plane is Free ($0) for prototyping, Hobby at $10/month, Team at $120/month, and Enterprise at $900/month, each raising control-plane redundancy, Actor Node caps, and support. Actor Nodes are billed per month on top, from $4.20 (R-5) to $94.50 (R-160). Self-hosting is free and open source under Apache 2.0, and startups from Y Combinator or a16z Speedrun get 50% off the Team plan for 12 months.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [n8n](https://openaitools.app/tool/n8n) | 4,522,449 | -7.4% | Freemium | A robust workflow automation platform uniting visual node-based building with AI agent orchestration and extensive app connectors. | [.md](https://openaitools.app/tool/n8n.md) |
| 2 | [Composio](https://openaitools.app/tool/composio) | 2,782,603 | +22.8% | Freemium, Contact for Pricing | A developer platform providing pre-built integrations, authentication, and execution tools specifically for AI agents across third-party apps. | [.md](https://openaitools.app/tool/composio.md) |
| 3 | [Dify](https://openaitools.app/tool/dify-ai) | 819,691 | -15% | Freemium | A comprehensive visual platform for building agent workflows and RAG pipelines via a no-code canvas instead of TypeScript. | [.md](https://openaitools.app/tool/dify-ai.md) |
| 4 | [Activepieces](https://openaitools.app/tool/activepieces) | 258,553 | +1.5% | Freemium | An open-source AI automation platform combining conversational workflow drafting, visual flow builders, and prebuilt app connectors. | [.md](https://openaitools.app/tool/activepieces.md) |
| 5 | [Agent 37](https://openaitools.app/tool/agent-37) | 180,030 | +24.2% | Free Trial, Contact for Pricing | The low-cost cloud sandbox where AI agents actually live | [.md](https://openaitools.app/tool/agent-37.md) |
| 6 | [Coder](https://openaitools.app/tool/coder) | 149,417 | -12.8% | Free Trial, Contact for Pricing, Free | Self-hosted cloud development environments and AI coding agents for enterprise teams | [.md](https://openaitools.app/tool/coder.md) |
| 7 | [Sim AI](https://openaitools.app/tool/sim-ai) | 140,953 | +20.6% | Freemium, Paid (per user/month), and Enterprise with custom pricing; self-hosting free under Apache 2.0 | An open-source AI workspace combining visual workflows and code for building and governing agent systems. | [.md](https://openaitools.app/tool/sim-ai.md) |
| 8 | [Agno](https://openaitools.app/tool/agno) | 140,302 | -3.3% | Contact for Pricing, Free | A popular Python-based agent framework offering modular building blocks, tailored for Python developers rather than TypeScript. | [.md](https://openaitools.app/tool/agno.md) |
| 9 | [boat](https://openaitools.app/tool/boat) | 66,870 | +520.8% | Free Trial, Paid | Persistent Ubuntu cloud VMs built for AI agent factories | [.md](https://openaitools.app/tool/boat.md) |
| 10 | [InsForge](https://openaitools.app/tool/insforge) | 60,257 | -11.3% | Freemium, Contact for Pricing, Free | Agent-native cloud infrastructure that lets coding agents run the whole backend stack | [.md](https://openaitools.app/tool/insforge.md) |

---
Source: https://openaitools.app/compare/mastra-vs-rivet-dev

More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)