# API2D vs Speechify 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. | Metric | [API2D](https://openaitools.app/tool/api2d-com) | [Speechify](https://openaitools.app/tool/speechify) | | :--- | :--- | :--- | | Website URL | https://www.api2d.com | https://speechify.com | | Categories | AI API, Large Language Models (LLMs), AI Developer Tools | AI Text-to-Speech, AI Voice Over, AI Voice Cloning, AI Dubbing | | Pricing Model | Paid | Freemium | | Monthly Visits | 214 | 5,457,475 | | MoM Growth Rate | -91.3% | +0.5% | | Primary Market | Taiwan | United States | | Direct Visits | 86 | 2,844,719 | | Review Score | 3.8 | 4.3 | | Saved Count | 4 | 30 | | Supported Platforms | Website | Website | ## API2D API2D is a payment-and-routing layer that sits in front of the world's major language and image models. Instead of managing billing with each provider separately, you register an API2D account, top it up, copy the issued key and paste it into any client that supports a custom API base URL. Because the interface mirrors OpenAI's own specification, most existing tools, SDKs and self-hosted chat UIs work without code changes. The platform bills in points (P) rather than a fixed monthly subscription, so cost tracks actual token consumption. According to API2D's own documentation, overall pricing is kept at roughly 1.5x the underlying provider's official rate, with a minimum per-request charge and free cached responses. Streamed GPT-4 replies are billed differently because they hold a connection open, and media-heavy endpoints add a modest bandwidth fee. Beyond pure relay, API2D layers on value that a raw endpoint does not offer: response caching, retrieval-augmented search, drawing tools and an agent/reseller program that lets larger accounts create and price their own sub-keys. It is aimed at Chinese-speaking developers and enthusiasts who want frictionless, domestically payable access to frontier models. For anyone evaluating it, remember that API2D is an independent third party and not affiliated with OpenAI, Anthropic or the other model vendors. **Pricing & Plans:** Pay-as-you-go in points (P); overall cost roughly 1.5x official provider pricing, with free cache hits and a minimum per-call charge. Recharge via WeChat, Alipay, Chinese bank cards or Stripe. Points expire 180 days after your last top-up. - **OpenAI-compatible endpoint:** One base URL and key work with virtually any app, SDK or self-hosted chat client that supports a custom API address. - **Multi-provider model access:** Route requests to OpenAI models, Claude, Stability diffusion, Azure TTS and vector database services from a single account. - **Points-based billing:** Consumption is metered in points with a published multiplier, so you pay for what you use rather than a flat subscription. - **Free response caching:** Identical request bodies return cached answers for free for 24 hours, and a header can disable caching when freshness matters. - **Reseller and grouping tools:** Larger accounts can batch-create keys, set default models and resell access through their own pricing pages. **Strengths:** Works with the large ecosystem of OpenAI-compatible tools out of the box; Point-based billing means low commitment and granular cost control; Response caching can make repeated queries effectively free; Built-in enhancements (search, knowledge base, drawing) go beyond a plain relay **Limitations:** Cost runs above direct provider pricing once the multiplier applies; Points expire 180 days after the last top-up, so balances need periodic renewal; No monthly plan — heavy users must estimate spend from token usage; Pricing calculation is complex because of minimum charges and bandwidth fees [Profile (Markdown)](https://openaitools.app/tool/api2d-com.md) ## Speechify Speechify is a voice AI assistant built around listening, reading and writing with your voice. Upload a PDF, open a web page or import a book, and Speechify reads it aloud in natural-sounding AI voices while highlighting the text and letting you adjust speed up to several times normal. It also generates AI podcasts and pastes answers into a voice-first workspace. Its voice typing feature turns speech into polished text across almost any app, so you can dictate in Google Docs, Gmail, Slack, Outlook and more instead of typing. The platform spans a web app plus Chrome and Edge extensions, and native iOS, Android, Mac and Windows apps, with an AI voice generator, Voice Over, Dubbing Studio and Voices Studio for creators. Speechify is used by tens of millions of people, including students, professionals, creators and readers with dyslexia or other accessibility needs, and won a 2025 Apple Design Award. It offers free access with paid Pro and enterprise tiers, and integrates as a voice AI layer across your devices. **Pricing & Plans:** Freemium with a free plan for basic text to speech, plus paid Pro tiers for premium voices, unlimited listening and advanced features. Enterprise and education plans are also available. - **Natural text to speech:** Listen to books, PDFs, documents and web pages read aloud in a large library of lifelike AI voices. - **Voice typing and dictation:** Dictate instead of typing in almost any app, across Google Docs, Gmail, Slack, Outlook and more. - **AI podcasts and summaries:** Turn documents or a short prompt into an AI podcast, and get instant summaries of what you are reading. - **Every device and browser:** Use the web app, Chrome and Edge extensions, and native iOS, Android, Mac and Windows apps. - **AI voice generator and dubbing:** Create voiceovers, dub content and explore voice cloning tools for creators and studios. **Strengths:** Reads almost any content type across a very wide range of apps and devices; High-quality, natural AI voices and flexible listening speed; Strong accessibility benefits and a genuinely useful voice typing feature **Limitations:** Premium voices and unlimited listening require a paid plan; Very feature-rich, so new users may need time to find what they need [Profile (Markdown)](https://openaitools.app/tool/speechify.md) ## Frequently Asked Questions ### How do API2D and Speechify compare in monthly traffic? API2D has 214 monthly visits, while Speechify has 5,457,475. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? API2D has a month-over-month growth rate of -91.3%; Speechify has +0.5%. ### How does pricing compare? API2D: Paid. Pay-as-you-go in points (P); overall cost roughly 1.5x official provider pricing, with free cache hits and a minimum per-call charge. Recharge via WeChat, Alipay, Chinese bank cards or Stripe. Points expire 180 days after your last top-up. Speechify: Freemium. Freemium with a free plan for basic text to speech, plus paid Pro tiers for premium voices, unlimited listening and advanced features. Enterprise and education plans are also available. ## 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 | Delivers significantly superior voice realism and cloning quality, but lacks Speechify's dedicated document library reader interface. | [.md](https://openaitools.app/tool/elevenlabs-io.md) | | 2 | [OpenRouter](https://openaitools.app/tool/openrouter-ai) | 19,941,437 | -6.2% | Paid | One API key for hundreds of AI models from every major provider | [.md](https://openaitools.app/tool/openrouter-ai.md) | | 3 | [Fish Audio](https://openaitools.app/tool/fish-speech) | 8,557,159 | +1.6% | Freemium | Provides powerful open-source speech synthesis and voice cloning, but requires technical setup compared to turnkey apps. | [.md](https://openaitools.app/tool/fish-speech.md) | | 4 | [NaturalReader](https://openaitools.app/tool/naturalreaders) | 3,249,984 | -3.2% | Freemium | Offers a very similar document-reading experience and browser extension for listening to PDFs, but with fewer advanced voice cloning suites. | [.md](https://openaitools.app/tool/naturalreaders.md) | | 5 | [TTSMaker](https://openaitools.app/tool/ttsmaker) | 1,158,846 | +6.8% | Freemium | Provides free text-to-speech conversion across many languages, but lacks advanced reading assistant and document management features. | [.md](https://openaitools.app/tool/ttsmaker.md) | | 6 | [Voice AI](https://openaitools.app/tool/voice-ai) | 1,017,577 | -14.9% | Freemium | Specializes in real-time voice changing and cloning, but lacks Speechify's robust ebook and document reading workflow. | [.md](https://openaitools.app/tool/voice-ai.md) | | 7 | [AnyToSpeech](https://openaitools.app/tool/anytospeech) | 988,327 | +28% | Freemium | Converts text, documents, and web pages into natural audio via browser tools, but lacks Speechify's polished mobile apps. | [.md](https://openaitools.app/tool/anytospeech.md) | | 8 | [OrcaRouter](https://openaitools.app/tool/orcarouter) | 975,300 | -5.2% | Freemium | One OpenAI-compatible gateway for adaptive LLM routing, guardrails, and spend control | [.md](https://openaitools.app/tool/orcarouter.md) | | 9 | [SpeechGen.io](https://openaitools.app/tool/speechgen-io) | 767,550 | +2.3% | Freemium, Paid | Generates realistic voiceovers from text scripts, but lacks dedicated e-reader and document library apps. | [.md](https://openaitools.app/tool/speechgen-io.md) | | 10 | [CometAPI](https://openaitools.app/tool/cometapi) | 602,966 | +49.7% | Pay-as-you-go (credits) | One OpenAI-compatible API key for 500+ AI models | [.md](https://openaitools.app/tool/cometapi.md) | --- Source: https://openaitools.app/compare/api2d-com-vs-speechify More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)