Whisper

Judgement

What it is

Building block

What it does

OpenAI's open speech recognition model and Python package, which transcribes and translates audio in many languages and identifies the spoken language.

Adopt it when

You need accurate offline transcription and want the reference implementation of the models.

Watch out

The reference code is slow and memory-hungry, so most production uses run faster-whisper or whisper.cpp instead, and the repository changes rarely.

Ready for

Production-ready

Runs as

Library and command line

Built with

Python and PyTorch

How established

Established: started 4 years ago, latest release v20250625.

What the license allows

You can build it into a product you sell, as long as you keep its copyright notice.

Judged on 2026-11-06 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Whisper → CPython → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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