免费 · 无限 · 隐私 · 端侧AI笔记

免费无限转录音频的最佳方式

将每次会议和讲座转化为私人知识库。

需要配备Apple Silicon的macOS 13.3+

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Gemma LocalReady

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Alt: Local AI Meeting Notes App

Jan 30, 2026 2:00 PM · 3 attendees

Meeting Summary

Alt is a local AI meeting notes app developed by 3 KAIST engineers. It runs a proprietary speech recognition engine directly on users' PCs to ensure data privacy, and is free to use with no time limits. It offers real-time transcripts, AI chat, support for 100 languages, and real-time translation.

Discussion

• Alt runs a high-performance speech recognition engine developed by 3 KAIST engineers directly on users' PCs, so voice data never leaves to external servers, allowing safe recording of sensitive meeting content.

• Unlimited use with no time restrictions, and works seamlessly with online meeting platforms like Zoom and Google Meet.

• Real-time transcript generation, AI-powered conversational organization, support for 100 languages, and real-time translation make it useful for multilingual meetings.

• AI analyzes meeting content to automatically summarize key points and organize action items, producing shareable meeting notes immediately after the meeting ends.

Action Items

Review final landing page design @Jungyeon
Complete Stripe payment integration test @Jehee
Create user feedback collection form @Hyunsoo

Discussion Points

Team plan pricing discussion (to be decided in next meeting)
Mobile app development timeline review needed

Next Meeting: Thu, Feb 6, 2026 2:00 PM

Speaker Occupancy

Speaker 1

80%

Speaker 2

12%

Speaker 3

Key Statements

Speaker 1

•Alt is a free AI meeting transcription app with no time limits
•Speech recognition runs locally, no data leaves externally

Speaker 2

•Asked about voice data security processing
•Inquired about multilingual support

Speaker113:25:37

Alt is a free AI lecture and meeting transcription app with no time limits. To avoid missing important content during lectures or meetings, you need to take notes while listening, but in reality, you often lose track while focusing on notes, or your notes become incomplete while trying to listen. Alt was created to eliminate that burden.

Speaker213:25:59

How is voice data processed? I'm a bit concerned about security.

Speaker113:26:06

Because 3 engineers from KAIST developed and run their own high-performance speech recognition engine directly on your PC, voice data never leaves to external servers. So you can safely record sensitive content like meetings, interviews, and sales calls.

Speaker313:26:31

Can it be used in environments without internet?

Speaker113:26:39

Yes, it works offline too. The features are designed for real-world use, so you can use it unlimited with no time restrictions, and it works seamlessly with Zoom or Google Meet.

Speaker213:26:59

How about multilingual support?

Speaker113:27:04

It supports 100 languages with real-time translation, making it useful for multilingual meetings. During meetings, you can receive real-time transcripts or organize needed content instantly like chatting with AI.

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受信任于

免费。真正的免费。

无限语音识别

正因为每月分钟数限制令人烦恼，我们才开发了这款应用。语音识别永久免费，没有时间限制。

安全

所有数据仅存储在您的电脑上，完全属于您。

离线也能使用

无锁定

所有数据仅存储在您的设备上。随时以任何格式导出，自由迁移到其他工具。

如何做到免费且无限制？

因为AI在您的设备上运行。

大多数AI服务会将您的数据发送到他们的服务器进行处理。而Alt的AI在您的笔记本电脑内完成所有工作。没有AI和服务器成本，所以我们可以免费、无限制地提供服务。

核心功能

支持100+种语言 + 实时翻译

说话人分离

即将上线

识别说话人，并总结每位说话人的发言。

将Google Meet、Zoom等在线音频也清晰转写。

基于会议、课程与PDF的AI总结、聊天与测验

实时AI会议纪要

录音文件无限上传，转为文字

出色的语音识别率

以世界级优化技术在您的设备上直接运行高性能模型，准确捕捉语音的细微差异。

为让高性能AI模型在你的PC上轻快高速运行，我们从零打造了核心引擎。

2025年世界领先性能（SOTA）在Apple Silicon上实现实时流式语音识别，
比此前最佳快 15倍且更省电

Encoding Performance

CoreML Encoder

272.7 ms

기존

5060.6 ms

Decoding Performance

MLX Decoder

28.5 ms

기존

451.7 ms

Lightning-SimulWhisper524 Stars

世界领先的Pyannote引擎（SOTA）将Pyannote说话人分离用GGML + CoreML重新实现，
达到实时的 39倍速度

Segmentation Performance

CoreML

12 ms/chunk

기존

46 ms/chunk

Embedding Performance

CoreML

13 ms/chunk

기존

25 ms/chunk

pyannote-ggml

我们为什么要做Alt？

韩国顶尖工科院校学生为无限课堂笔记而打造的应用

About us →

Alt的诞生源于我看到朋友使用语音转文字模型来转录和总结讲座。大多数AI笔记应用都有时间限制。上3-4节课就用完了。这最初只是一个小项目，我以为会很简单，却不知道会遇到什么困难。在降低内存使用的同时实现高性能是很困难的。我甚至做了一个开源项目（欢迎点星！）我上课的时候，没有这样的工具，边听边手动记笔记很困难。如果当时有这样的服务，我的学习会轻松得多。我们希望全世界的学生都能更轻松地学习。完全免费。这是可能的，因为我们不运行任何服务器，也不依赖付费API。希望对您有用。还有一些不足之处，请多多发送反馈，我们会继续改进😊 谢谢。 alt团队

什么时候适合用它？

学校课程

在线课程

研讨会

大会

会议

用户访谈

面试

一对一

IR路演

你积累的上下文越多， AI就越懂你。

打造你的个人上下文库——免费、无限制，而且真正属于你。

客服客服

Alt: Local AI Meeting Notes App

Jan 30, 2026 2:00 PM · 3 attendees

Meeting Summary

Alt is a local AI meeting notes app developed by 3 KAIST engineers. It runs a proprietary speech recognition engine directly on users' PCs to ensure data privacy, and is free to use with no time limits. It offers real-time transcripts, AI chat, support for 100 languages, and real-time translation.

Discussion

• Unlimited use with no time restrictions, and works seamlessly with online meeting platforms like Zoom and Google Meet.

• Real-time transcript generation, AI-powered conversational organization, support for 100 languages, and real-time translation make it useful for multilingual meetings.

• AI analyzes meeting content to automatically summarize key points and organize action items, producing shareable meeting notes immediately after the meeting ends.

Action Items

Review final landing page design @Jungyeon
Complete Stripe payment integration test @Jehee
Create user feedback collection form @Hyunsoo

Discussion Points

Team plan pricing discussion (to be decided in next meeting)
Mobile app development timeline review needed

Next Meeting: Thu, Feb 6, 2026 2:00 PM

免费 · 无限 · 隐私 · 端侧AI笔记

免费无限转录音频的最佳方式

Alt: Local AI Meeting Notes App

Meeting Summary

Discussion

Action Items

Discussion Points

Speaker Occupancy

Key Statements

受信任于

免费。真正的免费。

无限语音识别

安全

离线也能使用

无锁定

如何做到免费且无限制？

核心功能

支持100+种语言 + 实时翻译

说话人分离

将Google Meet、Zoom等在线音频也清晰转写。

基于会议、课程与PDF的AI总结、聊天与测验

实时AI会议纪要

录音文件无限上传，转为文字

出色的语音识别率

为让高性能AI模型在你的PC上轻快高速运行， 我们从零打造了核心引擎。

我们为什么要做Alt？

韩国顶尖工科院校学生 为无限课堂笔记而打造的应用

什么时候适合用它？

学校课程

在线课程

研讨会

大会

会议

用户访谈

面试

一对一

IR路演

Alt: Local AI Meeting Notes App

Meeting Summary

Discussion

Action Items

Discussion Points

Speaker Occupancy

Key Statements

为让高性能AI模型在你的PC上轻快高速运行，我们从零打造了核心引擎。

韩国顶尖工科院校学生为无限课堂笔记而打造的应用