Audio Summarizer: Transcribe Any Audio into a Mind Map
Upload a recording and get the transcript’s key points as an editable mind map
See Pro plansRequires Pro or Max · The Free plan covers text, PDFs, webpages, images and eBooks
How It Works
Upload the Recording
Drop in an MP3, M4A, WAV, AAC, FLAC, OGG, WMA, OPUS, WEBM, or MP4 file up to 20 MB
AI Transcribes the Speech
The audio is transcribed first; the credit cost is set by the recording’s measured length
Key Points Become a Map
Topics, arguments, and decisions are grouped into branches, with examples and details underneath
Edit, Export, Share
Rename or move any node, then export to PNG, SVG, or Markdown, or share a read-only link
Why MindLM?
10 Audio Formats
MP3, M4A, WAV, AAC, FLAC, OGG, WMA, OPUS, WEBM, and the audio track of MP4 recordings.
Speech In, Structure Out
A rambling hour of talk comes back as a tree of topics instead of a wall of transcript text.
Clear, Per-Minute Pricing
1.5 credits to start plus 1.5 credits per minute, rounded up to the minute. A 20-minute recording costs 31.5 credits.
Editable and Exportable
Fix a misheard name, merge two branches, then export PNG, SVG, or Markdown.
Popular Use Cases
See what people actually use it for — chances are your problem is on this list.
Turn a lecture recording into study notes
Record the class on your phone, upload the file, and get the lecture’s topics and examples as a tree to review before the exam.
Recap a meeting you only half heard
Upload the meeting recording and get the decisions, owners, and open questions grouped into branches you can share with the team.
Organize a rambling voice memo
Talked through an idea on a walk? Upload the memo and see the thoughts sorted into a structure you can keep editing.
What the audio summarizer does
A recording is the least searchable thing you own. An hour-long lecture or a meeting you only half followed sits in your files as a single blob, and the only way back into it is to listen again.
MindLM transcribes the audio first, then summarizes the transcript as a mind map. The topics that came up become the first-level branches, and the arguments, decisions, and examples sit underneath. You end up with an outline of what was said, one you can skim in a minute and keep editing.
Supported formats
MP3, M4A, WAV, AAC, FLAC, OGG, WMA, OPUS, and WEBM files are accepted, along with MP4 files, where MindLM uses the audio track. That covers phone voice memos, Zoom and Teams recordings, recorder apps, and screen recordings.
How long a recording can be
The limit is the file size, 20 MB, so how many minutes fit depends on the bitrate:
| Bitrate | Typical source | Fits in 20 MB |
|---|---|---|
| 128 kbps | Music-quality MP3 | about 20 minutes |
| 64 kbps | Voice memo apps, podcasts | about 40 minutes |
| 32 kbps, mono | Speech-only export | about 80 minutes |
Speech stays clear at low bitrates, so for a long lecture, export it as mono at 32–64 kbps before uploading.
What it costs
Audio upload is part of the Pro and Max plans. Each recording costs 1.5 credits to start plus 1.5 credits per minute, rounded up to the next minute, and the charge is based on the length MindLM measures from the file:
| Recording | Credits |
|---|---|
| 5-minute voice memo | 9 |
| 20-minute interview | 31.5 |
| 40-minute lecture | 61.5 |
Pro includes 200 credits a month and Max includes 600.
Audio summarizer vs podcast summarizer
The podcast summarizer works differently: you search a public show, pick an episode, and MindLM maps it from the episode's show notes without transcribing anything. That's quicker when a show publishes detailed notes. Use the audio summarizer for your own recordings, or for any episode whose notes are too thin to summarize, by downloading the file and uploading it here.
Export formats
- PNG for slides and notes
- SVG for a vector that stays sharp at any size
- Markdown for Notion, Obsidian, or any outliner
- Share link for a read-only page you can send to anyone
There is no direct PDF export yet.
Frequently Asked Questions
Which audio formats are supported?
MP3, M4A, WAV, AAC, FLAC, OGG, WMA, OPUS, and WEBM, plus MP4 files, where the audio track is used. The file must be 20 MB or smaller.
How long can a recording be?
The limit is the 20 MB file size, so the length depends on the bitrate: about 20 minutes of 128 kbps MP3, about 40 minutes at 64 kbps, and about 80 minutes at 32 kbps, which is still clear for speech. Export long recordings as mono speech-quality audio to fit more.
Is the audio summarizer free?
Audio upload is part of the Pro and Max plans. The Free plan (10 credits on signup) covers text, PDFs, documents, webpages, images, and eBooks.
How many credits does a recording cost?
1.5 credits to start plus 1.5 credits per minute, rounded up to the next minute. A 10-minute voice memo costs 16.5 credits and a 40-minute lecture costs 61.5. Pro includes 200 credits a month and Max 600.
How is this different from the podcast summarizer?
The podcast summarizer searches public shows and maps an episode from its show notes, with no transcription. The audio summarizer transcribes a file you upload, so use it for your own recordings or for episodes whose notes are too short.
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Ready to Get Started?
Upload a recording and get the transcript’s key points as an editable mind map. Available on Pro and Max.
See Pro plans