Best Free Speech-to-Text Tools 2026: 6 Options Compared
Best free Speech-to-Text Tools compared: Whisper, whisper.cpp, Vosk, Otter.ai and 2 more, with free-plan limits, platforms and prices from official pages checked October 24, 2026.
•3 min read•Voice AI & Transcription
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Quick comparison
| Tool | Price | Platforms | Best for | Tested |
|---|---|---|---|---|
| Whisper | Free (Free to run on your own hardware; needs Python and the ffmpeg command-line tool) | Self-hosted (Python) | Accurate transcription of your own files | Docs only |
| whisper.cpp | Free (Free and open source; no paid tier stated on the source page) | Self-hosted (C/C++) | Whisper on modest hardware | Docs only |
| Vosk | Free (Free and open source; no paid tier stated on the source page) | Self-hosted (Python) | Embedding offline recognition in an app | Docs only |
| Otter.ai | Free (Basic: 300 monthly transcription minutes, 30 minutes per conversation); paid from $8.33 per user/month, billed annually (Pro; $16.99 monthly) | Web browser | Short meetings and calls | Docs only |
| Google Docs | Free (Free for anyone with a Google Account; storage comes from the Google account quota) | Web, iOS, Android | Dictating documents | Docs only |
| Microsoft Word | Free (Word for the web is free with a Microsoft account; files must be saved in OneDrive, which includes 5 GB on a free account) | Windows, macOS, iOS, Android, Web browser | Dictating inside Office | Docs only |
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Good fit if
- I want to dictate a document by voice (Google Docs is the pick)
- I have hours of recordings to transcribe locally (Whisper is the pick)
- I need recognition on a small offline device (Vosk is the pick)
- I want automatic notes from short meetings (Otter.ai is the pick)
Not ideal if
- You need paid-tier features, uptime guarantees or support that these free plans leave out
Free speech-to-text comes in three forms: dictation inside tools you already use, hosted meeting transcribers, and engines you run yourself. For typing a document by voice, Google Docs and Word for the web both have built-in dictation at no cost, with the condition that you work in a browser and sign in to a Google or Microsoft account. For recordings and meetings, Otter's free plan gives 300 monthly minutes with a 30-minute cap per conversation, which suits short calls but not long interviews. If you have a lot of audio, privacy needs or no appetite for a monthly cap, open-source engines are the answer. OpenAI's Whisper and whisper.cpp are accurate across many languages and run on a laptop, though larger models are slow without a GPU. Vosk is smaller and works offline, including on phones and a Raspberry Pi, and trades some accuracy for speed. The catch with all the self-hosted choices is that they are command-line or developer tools, not apps with a record button. Choose a hosted tool for convenience and a local engine for volume or confidentiality, and test accuracy on your own accent and recording quality before you trust either with something important.
Whisper
MIT-licensed model that transcribes many languages with strong accuracy. It needs Python and the bigger models want a GPU, but there is no usage cap.
Price: Free (Free to run on your own hardware; needs Python and the ffmpeg command-line tool) (Whisper pricing, checked 2026-10-23).
Platforms and license: Self-hosted (Python). MIT (code and model weights) (open source).
Project activity: 111.4k GitHub stars · latest release v20250625 (Jun 26, 2025) · last commit Aug 31, 2026
Best for: Accurate transcription of your own files.
whisper.cpp
MIT-licensed C/C++ port of Whisper that runs on an ordinary computer without a Python stack. It is a command-line tool, not a polished dictation app.
Price: Free (Free and open source; no paid tier stated on the source page) (whisper.cpp pricing, checked 2026-10-24).
Platforms and license: Self-hosted (C/C++). MIT (open source).
Project activity: 54.7k GitHub stars · latest release v1.9.5 (Oct 6, 2026) · last commit Oct 27, 2026
Best for: Whisper on modest hardware.
Vosk
Apache-2.0 offline recognition toolkit that works on Raspberry Pi and phones. Aimed at developers, and accuracy is below the larger Whisper models.
Price: Free (Free and open source; no paid tier stated on the source page) (Vosk pricing, checked 2026-10-24).
Platforms and license: Self-hosted (Python). Apache-2.0 (open source).
Project activity: 15.2k GitHub stars · latest release v0.3.50 (Apr 22, 2024) · last commit Oct 15, 2026
Best for: Embedding offline recognition in an app.
Otter.ai
Free Basic plan gives 300 transcription minutes a month and 30 minutes per conversation. Easy meeting notes in a browser, but long recordings will be cut off by those caps.
Price: Free (Basic: 300 monthly transcription minutes, 30 minutes per conversation); paid from $8.33 per user/month, billed annually (Pro; $16.99 monthly) (Otter.ai pricing, checked 2026-10-22).
Platforms and license: Web browser. Proprietary SaaS.
Best for: Short meetings and calls.
Compare: Otter.ai alternatives
Google Docs
Free with a Google account and, in Chrome, you can dictate straight into a document. Good for drafting text, not for transcribing a recorded file.
Price: Free (Free for anyone with a Google Account; storage comes from the Google account quota) (Google Docs pricing, checked 2026-10-23).
Platforms and license: Web, iOS, Android. Proprietary.
Best for: Dictating documents.
Compare: Google Docs alternatives
Microsoft Word
Word for the web is free with a Microsoft account and includes dictation, with files saved to OneDrive. Like Google Docs, it is for live speech rather than uploaded audio.
Price: Free (Word for the web is free with a Microsoft account; files must be saved in OneDrive, which includes 5 GB on a free account) (Microsoft Word pricing, checked 2026-10-23).
Platforms and license: Windows, macOS, iOS, Android, Web browser. Proprietary.
Best for: Dictating inside Office.
Compare: Microsoft Word alternatives
Which one to pick
- I want to dictate a document by voice: Google Docs
- I have hours of recordings to transcribe locally: Whisper
- I need recognition on a small offline device: Vosk
- I want automatic notes from short meetings: Otter.ai
Limits of this review
Docs-only for Whisper, whisper.cpp, Vosk, Otter.ai, Google Docs, Microsoft Word: we did not install or run them, so feature claims come from vendor pages. Vendor prices and free limits change; confirm on the linked pricing page before you commit.
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Kevin Fan
Kevin Fan is a SaaS founder. He runs Free Instead Of, which tracks free and open-source alternatives to paid software and checks each price and free-plan limit against the vendor's own pages.
Methodology
Based on official pricing, license and product pages checked between 2026-10-22 and 2026-10-24: Whisper, whisper.cpp, Vosk, Otter.ai, Google Docs, Microsoft Word. Prices, free limits and licenses are the figures shown on those pages on those dates. No tool on this page was installed or run. No accounts were created.