ggml

by ggml.ai

The tensor library underneath llama.cpp + whisper.cpp.

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TL;DR

Best for building new C/C++ ASR runtimes with INT4/INT5/INT8 quantization. Pricing: free.

Category
Open source
License
MIT
Stars
★ 15.1k
Last push
2026-08-07
Pricing
free
Platforms
Linux, macOS, Windows

What it is

The C tensor library powering llama.cpp + whisper.cpp. MIT.

Best for: Building new C/C++ ASR runtimes with INT4/INT5/INT8 quantization.
Watch out for: Lower-level than whisper.cpp itself.

Install / use

git clone https://github.com/ggerganov/ggml

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeNo
Languages supported99
HIPAA eligibleNo

Links

GitHub repo ↗

ggml vs Whipscribe

FeatureggmlWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfree$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages9999
PlatformsLinux, macOS, WindowsWeb, API, MCP

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