# ComfyFlow vs Rivet.dev

ComfyFlow records 1,930 monthly visits with -31.9% month-over-month growth and Free pricing. Rivet.dev records 21,359 monthly visits with -44.3% growth and Freemium, Contact for Pricing pricing.

| Metric | [ComfyFlow](https://openaitools.app/tool/https-comfyflow-app) | [Rivet.dev](https://openaitools.app/tool/rivet-dev) |
| :--- | :--- | :--- |
| Website URL | https://comfyflow.app | https://rivet.dev |
| Categories | AI App Builder, AI Workflow, AI Image Generator | AI Agent, AI Workflow, AI Developer Tools, AI App Builder |
| Pricing Model | Free | Freemium, Contact for Pricing |
| Monthly Visits | 1,930 | 21,359 |
| MoM Growth Rate | -31.9% | -44.3% |
| Primary Market | United States | United States |
| Direct Visits | 763 | 10,710 |
| Review Score | 4.3 | 4.5 |
| Saved Count | 2 | 0 |
| Supported Platforms | Website | Website |

## ComfyFlow

ComfyFlow solves a specific problem that anyone deep in the ComfyUI ecosystem runs into: a carefully tuned generation pipeline is only useful to other ComfyUI users, because running it requires the same nodes, models and GPU hardware. ComfyFlow wraps that pipeline into a clean web app so a colleague, client or friend can open a URL, type a prompt and get an image — no installation, no node graph, no CUDA troubleshooting. The workflow stays hidden behind the interface, which matters for creators who treat their pipeline as the product.

Because the platform is fully hosted, creators never have to think about GPU provisioning, queues or scaling. Publishing is the whole setup step. ComfyFlow's site describes the process as going from a ComfyUI workflow to a web app in seconds, and it pairs that with a benefits program that lets top creators get paid for the apps they publish — a path for turning prompt-engineering skill into something shareable rather than a local install.

The project is open source on GitHub and built on Stable Diffusion and ComfyUI, so it stays close to the community it serves. Each published app comes with 1,000 free run credits, and any visitor can use an app five times at no cost, which makes the apps genuinely usable for demos, client approvals and lightweight public sharing rather than just private experiments.

**Pricing & Plans:** Free to use. Every app published on ComfyFlow receives 1,000 free run credits, and each user can run an app five times for free. A benefits program lets top creators earn money from their published apps.

- **Workflow-to-web-app publishing:** Convert an existing ComfyUI workflow into a shareable web app in seconds, with no front-end development required.
- **Fully hosted GPU infrastructure:** Creators and developers do not need to manage GPU servers, queues or scaling — ComfyFlow handles the compute behind every published app.
- **Private workflows, public apps:** Visitors interact only with the app interface, so the underlying node graph and prompts stay hidden from the people using it.
- **Creator benefits program:** Top creators can join a benefits program and get paid for the apps they publish on the platform.
- **Open source foundation:** ComfyFlow is powered by Stable Diffusion and ComfyUI, with source code available on GitHub for anyone who wants to inspect or extend it.

**Strengths:** Removes the biggest sharing barrier in the ComfyUI world by hosting the GPU side entirely; Workflows stay private, which protects the creator's actual prompt and node engineering; Free credits model means published apps are usable by others without a paid plan; Open source on GitHub, so the community can inspect and build on it

**Limitations:** Value depends entirely on already having a ComfyUI workflow to publish — it is not a standalone image generator; The free credit allowance is limited, so heavy public usage will need a paid path; Feature depth is narrower than a full custom app build with bespoke UI and logic

[Profile (Markdown)](https://openaitools.app/tool/https-comfyflow-app.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 ComfyFlow and Rivet.dev compare in monthly traffic?

ComfyFlow has 1,930 monthly visits, while Rivet.dev has 21,359. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

ComfyFlow has a month-over-month growth rate of -31.9%; Rivet.dev has -44.3%.

### How does pricing compare?

ComfyFlow: Free. Free to use. Every app published on ComfyFlow receives 1,000 free run credits, and each user can run an app five times for free. A benefits program lets top creators earn money from their published apps. 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 | [Luxe-magnate-core](https://openaitools.app/tool/luxe-magnate-core) | 3,694,734 | +40.5% | Freemium, Contact for Pricing | Describe what you want and an AI agent builds the website, app, or SaaS product for you. | [.md](https://openaitools.app/tool/luxe-magnate-core.md) |
| 2 | [RunningHub](https://openaitools.app/tool/runninghub) | 3,105,554 | -28.5% | Freemium | Cloud ComfyUI platform to run workflows and build AI apps | [.md](https://openaitools.app/tool/runninghub.md) |
| 3 | [Mastra](https://openaitools.app/tool/mastra) | 318,954 | -5% | Freemium, Contact for Pricing | The TypeScript framework for building, deploying, and observing AI agents | [.md](https://openaitools.app/tool/mastra.md) |
| 4 | [Lightning AI](https://openaitools.app/tool/lightning-ai) | 272,562 | -12.3% | Freemium, Paid, Contact for Pricing | The AI cloud built by the creators of PyTorch Lightning | [.md](https://openaitools.app/tool/lightning-ai.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 | [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) |
| 8 | [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) |
| 9 | [exe.dev](https://openaitools.app/tool/exe-dev) | 60,103 | -26.4% | Freemium, Paid | Cloud Linux VMs built for developers and their AI agents | [.md](https://openaitools.app/tool/exe-dev.md) |
| 10 | [FlexAI](https://openaitools.app/tool/flexai) | 44,314 | +17.9% | Freemium, Paid, Contact for Pricing | Build, run and scale AI, from open models to governed agents | [.md](https://openaitools.app/tool/flexai.md) |

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

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