Async is a developer-focused AI platform offering a fast, realistic Text-to-Speech (TTS) and instant voice cloning API. It provides high-quality, expressive voices in over 20 languages, designed for easy integration into any application, from prototypes to enterprise-level products. With competitive pricing and a generous free tier, Async makes premium voice AI accessible to all developers.
A free online text-to-speech tool that perfectly recreates the nostalgic Microsoft SAM voice from Windows XP. It offers extensive voice customization, various retro presets including BonziBUDDY, and a modern, open-weight TTS model called Kokoro. Generate and download WAV audio directly in your browser without any installation or sign-up.
Async is a developer-focused AI platform offering a fast, realistic Text-to-Speech (TTS) and instant voice cloning API. It provides high-quality, expressive voices in over 20 languages, designed for easy integration into any application, from prototypes to enterprise-level products. With competitive pricing and a generous free tier, Async makes premium voice AI accessible to all developers.
A free online text-to-speech tool that perfectly recreates the nostalgic Microsoft SAM voice from Windows XP. It offers extensive voice customization, various retro presets including BonziBUDDY, and a modern, open-weight TTS model called Kokoro. Generate and download WAV audio directly in your browser without any installation or sign-up.
| Feature | Async | Samtts |
|---|---|---|
| Primary category | Voice Generation | Text To Speech |
| Added | 2025-09-08 | 2025-09-10 |
| Pricing | Freemium | Free |
| Official website | async.com | samtts.com |
| Product type | Website | Website |
| Performance data | ||
| User rating | Not verified | Not verified |
| Comments | 0 | 0 |
| Monthly visits | 344.1K | 72.7K |
| Monthly growth | -6.3% | 18.1% |
| Favorites | 132 | 141 |
| Details | View details | View details |
Compare Async and Samtts by monthly reach, traffic trend, visit depth, top regions, and acquisition sources.
In the Async vs Samtts monthly traffic comparison, Async currently shows 344.1K visits and Samtts shows 72.7K; Async has about 4.7 times the visible traffic of Samtts, an absolute difference of about 271.5K visits. This reflects visible reach, not feature quality or paid users.
Both tools provide verified traffic details, so monthly trends, visit depth, regions, and acquisition sources can be compared on the same basis.
| Country/region | Percentage | Traffic |
|---|---|---|
| ๐บ๐ธUnited States | 74.61% | 256.8K |
| ๐ฌ๐งUnited Kingdom | 14.1% | 48.5K |
| ๐ฆ๐บAustralia | 4.27% | 14.7K |
| ๐ฎ๐ณIndia | 3.72% | 12.8K |
| ๐จ๐ฆCanada | 3.3% | 11.4K |
| Source type | Percentage | Traffic |
|---|---|---|
| Direct | 89.62% | 308.4K |
| Referral | 8.86% | 30.5K |
| 1.52% | 5.2K |
| Country/region | Percentage | Traffic |
|---|---|---|
| ๐บ๐ธUnited States | 62.13% | 45.1K |
| ๐ฌ๐งUnited Kingdom | 13.64% | 9.9K |
| ๐ณ๐ฌNigeria | 10.77% | 7.8K |
| ๐ท๐บRussia | 6.83% | 5K |
| ๐ง๐ทBrazil | 6.63% | 4.8K |
| Source type | Percentage | Traffic |
|---|---|---|
| Direct | 78.08% | 56.7K |
| Referral | 21.92% | 15.9K |
This in-depth Async vs Samtts comparison uses only the product records, taxonomy, audience, traffic, and community signals available on this page. Async is primarily listed under โVoice Generationโ, while Samtts is primarily listed under โText To Speechโ, so the first decision is whether your actual task matches their recorded scope.
The structured fields currently show these decision-relevant differences: Primary category (Async: Voice Generation; Samtts: Text To Speech); Pricing (Async: Freemium; Samtts: Free); Monthly visits (Async: 344.1K; Samtts: 72.7K); Monthly growth (Async: -6.3%; Samtts: 18.1%); Favorites (Async: 132; Samtts: 141). These facts are more useful for selection than brand visibility alone.
In the Async vs Samtts monthly traffic comparison, Async currently shows 344.1K visits and Samtts shows 72.7K; Async has about 4.7 times the visible traffic of Samtts, an absolute difference of about 271.5K visits. This reflects visible reach, not feature quality or paid users.
Both tools provide verified traffic details, so monthly trends, visit depth, regions, and acquisition sources can be compared on the same basis.
If public market visibility is an important first-pass criterion, investigate Async first. The final choice should still follow taxonomy, use case, and a real trial because higher traffic does not prove broader capabilities or better workflow fit.
Async and Samtts currently overlap in shared categories: Text To Speech and Api; shared tags: developer API, text to speech, and TTS; shared roles: Content Creator, Game Developer, and Software Developer. This can place both on the same shortlist, but it does not prove equal implementation, depth, or cost.
Async's unique categories/tags are Voice Generation, AI voice generator, audio generation, low latency API, multilingual tts, realistic voices, speech synthesis, and voice cloning; Samtts's are Voice Generator, audio tool, bonzibuddy, free tts, kokoro tts, microsoft sam, open source tts, and retro voice. These unique fields are the strongest differentiators: validate the product whose recorded scope matches the task instead of following traffic alone.
Async has no verified rating, 0 comments, 132 favorites, and 121 likes๏ผSamtts has no verified rating, 0 comments, 141 favorites, and 167 likesใ
Neither product has enough rating or comment samples for a credible reputation ranking.
Put Async on the priority trial list when the task aligns with โVoice Generationโ and especially Voice Generation, AI voice generator, audio generation, low latency API, multilingual tts, and realistic voices, or the users include Conversational AI Engineer, Customer Support, Digital Publisher, and Marketing Manager. This follows recorded positioning and does not imply unlisted capabilities are absent.
Async also currently records: pricing is freemium, product type is website, 344.1K verified monthly visits, no verified user rating. Verify any hard requirement around price, platform, or reach before trial, and do not let sparse review data substitute for testing.
Put Samtts on the priority trial list when the task aligns with โText To Speechโ and especially Voice Generator, audio tool, bonzibuddy, free tts, kokoro tts, and microsoft sam, or the users include Hobbyist, Social Media Manager, Sound Designer, and Video Editor. This follows recorded positioning and does not imply unlisted capabilities are absent.
Samtts also currently records: pricing is free, product type is website, 72.7K verified monthly visits, no verified user rating. Verify any hard requirement around price, platform, or reach before trial, and do not let sparse review data substitute for testing.
The available data describes positioning, public visibility, and community signals, but it cannot prove output quality, speed, integration effort, privacy, or long-term cost in your workflow. Before deciding, run the same representative tasks in Async and Samtts, then record completion time, accuracy, manual corrections, and the real paid threshold. A like-for-like trial turns this comparison into a defensible adoption decision.
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