API2D records 214 monthly visits with -91.3% month-over-month growth and Paid pricing. Speechify records 5,457,475 monthly visits with +0.5% growth and Freemium pricing.
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Text to speech and voice AI across every device
| Dimension / Metric | | |
|---|---|---|
| Official Domain | api2d.com | speechify.com |
| Pricing Model | Paid | Freemium |
| Monthly Visits | 214 (214) | 5.46M (5,457,475) |
| MoM Traffic Delta | -2.23K (-91.3%) | +24.71K (+0.5%) |
| Primary Market & Share | 🇹🇼 Taiwan (100%) | 🇺🇸 United States (55.2%) |
| Direct Visits / mo | 86 | 2.84M |
| User Rating | 3.8 | 4.3 |
| Supported Platforms | Website | Website |
Use top AI models like electricity — register, top up, paste your key
One base URL and key work with virtually any app, SDK or self-hosted chat client that supports a custom API address.
Route requests to OpenAI models, Claude, Stability diffusion, Azure TTS and vector database services from a single account.
Consumption is metered in points with a published multiplier, so you pay for what you use rather than a flat subscription.
Identical request bodies return cached answers for free for 24 hours, and a header can disable caching when freshness matters.
Text to speech and voice AI across every device
Listen to books, PDFs, documents and web pages read aloud in a large library of lifelike AI voices.
Dictate instead of typing in almost any app, across Google Docs, Gmail, Slack, Outlook and more.
Turn documents or a short prompt into an AI podcast, and get instant summaries of what you are reading.
Use the web app, Chrome and Edge extensions, and native iOS, Android, Mac and Windows apps.
SpecialistDelivers significantly superior voice realism and cloning quality, but lacks Speechify's dedicated document library reader interface.
SpecialistDelivers significantly superior voice realism and cloning quality, but lacks Speechify's dedicated document library reader interface.
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Free / Open-sourceOne API key for hundreds of AI models from every major provider
Free / Open-sourceProvides powerful open-source speech synthesis and voice cloning, but requires technical setup compared to turnkey apps.
Free / Open-sourceProvides powerful open-source speech synthesis and voice cloning, but requires technical setup compared to turnkey apps.
Offers a very similar document-reading experience and browser extension for listening to PDFs, but with fewer advanced voice cloning suites.
Offers a very similar document-reading experience and browser extension for listening to PDFs, but with fewer advanced voice cloning suites.
Free / Open-sourceProvides free text-to-speech conversion across many languages, but lacks advanced reading assistant and document management features.
Free / Open-sourceProvides free text-to-speech conversion across many languages, but lacks advanced reading assistant and document management features.
SpecialistSpecializes in real-time voice changing and cloning, but lacks Speechify's robust ebook and document reading workflow.
SpecialistSpecializes in real-time voice changing and cloning, but lacks Speechify's robust ebook and document reading workflow.
Converts text, documents, and web pages into natural audio via browser tools, but lacks Speechify's polished mobile apps.
Converts text, documents, and web pages into natural audio via browser tools, but lacks Speechify's polished mobile apps.
Free / Open-sourceOne OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
Free / Open-sourceOne OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control
Generates realistic voiceovers from text scripts, but lacks dedicated e-reader and document library apps.
Generates realistic voiceovers from text scripts, but lacks dedicated e-reader and document library apps.
Free / Open-sourceOne OpenAI-compatible API key for 500+ AI models
Free / Open-sourceOne OpenAI-compatible API key for 500+ AI models
Free / Open-sourceOne open-source AI gateway for 100+ LLM providers
Free / Open-sourceOne API for LLM, image, video, and audio models in production
Free / Open-sourceOne API for LLM, image, video, and audio models in production
