# Fish Audio vs OpenFlowKit

Fish Audio records 8,557,159 monthly visits with +1.6% month-over-month growth and Freemium pricing. OpenFlowKit records 1,437 monthly visits with -70.3% growth and Free pricing.

| Metric | [Fish Audio](https://openaitools.app/tool/fish-speech) | [OpenFlowKit](https://openaitools.app/tool/openflowkit) |
| :--- | :--- | :--- |
| Website URL | https://fish.audio | https://openflowkit.com |
| Categories | AI Voice Generator, AI Text-to-Speech, AI Celebrity Voice Generator, AI Models | AI Diagram Generator, AI Assistant, AI Code Assistant, Open Source AI Models |
| Pricing Model | Freemium | Free |
| Monthly Visits | 8,557,159 | 1,437 |
| MoM Growth Rate | +1.6% | -70.3% |
| Primary Market | United States | Vietnam |
| Direct Visits | 3,703,977 | 614 |
| Review Score | 4.4 | 4.6 |
| Saved Count | 11 | 0 |
| Supported Platforms | Website | Website |

## Fish Audio

Fish Audio, originally known as Fish Speech, is a voice-AI platform for turning text into natural speech. It combines text-to-speech, voice cloning and speech-to-text with emotional control, so you can tag a line as [whispering], [excited] or [sobbing] and get delivery that matches the script rather than flat narration. The voice library is enormous, with community-uploaded voices numbering in the millions across a wide range of languages.

Cloning is fast and forgiving: a short sample is enough to build a usable voice model, and it can then speak in many languages while keeping the original timbre. Fish Audio publishes powerful APIs for real-time streaming, cloning and transcription, and positions itself for enterprise work such as conversational agents, dubbing and audiobook production.

The company also keeps an open-source arm, releasing the Fish Speech model line for self-hosting, while the hosted platform adds a browser studio, avatar and image/video model integrations, and paid tiers for higher volume. Free starting tiers make it easy to evaluate before committing.

**Pricing & Plans:** Freemium: free sign-up with monthly generations, plus paid subscriptions for higher volume, commercial use and API access; enterprise pricing on request.

- **Expressive Text to Speech:** Type or paste a script and generate natural narration, with inline emotion and delivery tags such as [whispering], [angry] or [laughing].
- **Instant Voice Cloning:** Create a usable voice clone from a short audio sample and reuse it across scripts and languages.
- **Huge Voice Library:** Browse and use a large catalog of community voices covering many languages and character styles.
- **Speech to Text:** Transcribe audio with multilingual support and emotion or speaker cues for downstream editing.
- **Real-time Voice APIs:** Low-latency streaming endpoints let developers build conversational agents, dubbing pipelines and audio apps.

**Strengths:** Natural, emotionally controllable output that handles nuance well; Voice cloning works from a very short sample; Very large shared voice library plus open-source model lineage; Robust APIs for real-time streaming and developer integration

**Limitations:** Free tier is limited and top-quality usage pushes you toward paid plans; Voice cloning raises consent and impersonation risks that teams must manage; Some features and model names change quickly, so docs can lag the product

[Profile (Markdown)](https://openaitools.app/tool/fish-speech.md)

## OpenFlowKit

OpenFlowKit is an open-source diagramming studio built for engineers who think in systems. It supports three ways of working on one canvas: freehand drawing with shapes, connectors, ink, images and charts; writing the diagram as code in Mermaid, D2 or Structurizr; or letting an AI agent build and edit it live through the Model Context Protocol. Text and canvas stay in sync, so you can start with a snippet and finish with something visual.

A standout v2 feature maps a public GitHub repository directly in the browser: paste an owner/repo URL and OpenFlowKit reads the files, produces boxes and connections, and cites each arrow back to the exact line of code it came from. Private repositories can be mapped locally through the CLI. The result is architecture documentation that reflects the code rather than someone's memory of it.

OpenFlowKit is also practical for day-to-day diagramming: a toolset of 29 MCP tools for agents, C4 context/container/component views that stay connected to one underlying model, automatic matching of 2,000+ cloud and developer icons by node label, animated SVG/GIF/MP4 export, share links and self-hosting. It is MIT licensed, runs locally by default and needs no account.

**Pricing & Plans:** Free and open source under the MIT licence. There is no paid tier on the site; you can start creating without signing up, and the code can be self-hosted.

- **Repo-to-map generation:** Paste a public GitHub repository and OpenFlowKit reads its files in the browser to draw modules and connections, with every arrow cited to the source line it came from.
- **Agent-native canvas over MCP:** 29 diagram tools for Claude Code, Codex, Cursor, VS Code, Windsurf or any MCP client, so an agent can draw on the diagram you have open, one undo away.
- **Diagram as code:** Write or paste Mermaid, D2 or Structurizr; the text and the canvas remain the same diagram, so you can round-trip between syntax and visuals.
- **Connected C4 model views:** Move from system context to containers to components in linked views that all stay grounded in a single architecture model.
- **Icon matching and motion export:** Label a node 'PostgreSQL' or 'Kubernetes' and the right icon is matched automatically from 2,000+ cloud and developer icons; export animated SVG, GIF, MP4 or WebM for living documentation.

**Strengths:** Free, MIT-licensed and local-first with no account required; Unique repo-to-diagram mapping that cites each connection back to code; Works equally well for hand drawing, diagram-as-code and AI-agent workflows; Strong ecosystem coverage with automatic matching of 2,000+ cloud and developer icons

**Limitations:** No hosted paid support or managed cloud option is advertised, so teams self-host; Advanced MCP and CLI repo mapping assumes comfort with developer tooling; C4 model depth and multiple views can feel heavy for quick one-off sketches

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

## Frequently Asked Questions

### How do Fish Audio and OpenFlowKit compare in monthly traffic?

Fish Audio has 8,557,159 monthly visits, while OpenFlowKit has 1,437. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Fish Audio has a month-over-month growth rate of +1.6%; OpenFlowKit has -70.3%.

### How does pricing compare?

Fish Audio: Freemium. Freemium: free sign-up with monthly generations, plus paid subscriptions for higher volume, commercial use and API access; enterprise pricing on request. OpenFlowKit: Free. Free and open source under the MIT licence. There is no paid tier on the site; you can start creating without signing up, and the code can be self-hosted.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [ElevenLabs](https://openaitools.app/tool/elevenlabs-io) | 42,396,771 | +26.1% | Freemium, Paid, Contact for Pricing | Industry-leading voice cloning and text-to-speech quality, but lacks Fish Audio's open-source model flexibility and self-hosting options. | [.md](https://openaitools.app/tool/elevenlabs-io.md) |
| 2 | [HeyGen](https://openaitools.app/tool/heygen) | 7,000,070 | +9.4% | Freemium | Turn scripts into studio-quality AI avatar videos in minutes | [.md](https://openaitools.app/tool/heygen.md) |
| 3 | [Speechify](https://openaitools.app/tool/speechify) | 5,457,475 | +0.5% | Freemium | Text to speech and voice AI across every device | [.md](https://openaitools.app/tool/speechify.md) |
| 4 | [Voicemod](https://openaitools.app/tool/voicemod) | 3,836,221 | -2.7% | Freemium | Real-time AI voice changer and soundboard for gaming and streaming | [.md](https://openaitools.app/tool/voicemod.md) |
| 5 | [Cartesia](https://openaitools.app/tool/cartesia-ai) | 1,782,707 | +49.7% | Contact for Pricing | Delivers ultra-low latency real-time streaming speech generation via API, though less focused on consumer dubbing workflows. | [.md](https://openaitools.app/tool/cartesia-ai.md) |
| 6 | [TTSMaker](https://openaitools.app/tool/ttsmaker) | 1,158,846 | +6.8% | Freemium | Free online text-to-speech with hundreds of AI voices across more than 100 languages | [.md](https://openaitools.app/tool/ttsmaker.md) |
| 7 | [Eraser](https://openaitools.app/tool/eraser) | 534,396 | -23.6% | Freemium, Paid, Contact for Pricing | AI diagrams and technical design docs built from your code and systems | [.md](https://openaitools.app/tool/eraser.md) |
| 8 | [Edraw Software](https://openaitools.app/tool/edraw-software) | 436,337 | -2.8% | Freemium, Free Trial | AI diagramming, mind mapping and project tools with 50,000+ templates | [.md](https://openaitools.app/tool/edraw-software.md) |
| 9 | [Activepieces](https://openaitools.app/tool/activepieces) | 258,553 | +1.5% | Freemium | Open-source AI automation that unifies agents, flows and 770+ app integrations | [.md](https://openaitools.app/tool/activepieces.md) |
| 10 | [Listnr AI](https://openaitools.app/tool/listnr-ai) | 235,777 | -4.2% | Freemium | Online text-to-speech and embedding platform suited for podcasting and content creators, but less customizable for developers. | [.md](https://openaitools.app/tool/listnr-ai.md) |

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Source: https://openaitools.app/compare/fish-speech-vs-openflowkit

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