--- title: "STT vs whisper.cpp" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/coqui-ai-stt-vs-ggml-org-whisper-cpp" tools: ["coqui-ai-stt", "ggml-org-whisper-cpp"] --- # STT vs whisper.cpp *GraphCanon updated Jul 12, 2026* ## Verdict Pick STT when license: STT is MPL-2.0, whisper.cpp is MIT; pick whisper.cpp when license: whisper.cpp is MIT, STT is MPL-2.0. [STT](https://coqui.ai) reports 2.6k GitHub stars, 299 forks, and 106 open issues, last pushed Mar 11, 2024. [whisper.cpp](https://github.com/ggml-org/whisper.cpp) has 52k stars, 5.9k forks, and 1.2k open issues, last pushed Jul 11, 2026. Figures are from public GitHub metadata via [STT's repository](https://github.com/coqui-ai/STT) and [whisper.cpp's repository](https://github.com/ggml-org/whisper.cpp). | | [STT](/tools/coqui-ai-stt.md) | [whisper.cpp](/tools/ggml-org-whisper-cpp.md) | | --- | --- | --- | | Tagline | 🐸STT - The deep learning toolkit for Speech-to-Text. Training and deploying STT models has never been so easy. | Port of OpenAI's Whisper model in C/C++ for speech-to-text inference | | Stars | 2,590 | 51,715 | | Forks | 299 | 5,898 | | Open issues | 106 | 1,216 | | Language | C++ | C++ | | Adopt for | - | A port of OpenAI's Whisper model to C++, optimized with `ggml`, for lightweight speech-to-text transcription. | | Persona | - | - | | Runtime | - | - | | License | MPL-2.0 | MIT License - permissive license that allows users to use the software in any way, including closed-source applications. | | Categories | Inference & Serving, Model Training, Speech & Audio | Inference & Serving, Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [STT](/tools/coqui-ai-stt.md) | [whisper.cpp](/tools/ggml-org-whisper-cpp.md) | | --- | --- | --- | | Maintenance | Dormant (18%) | Very active (96%) | | Days since push | 852d | 0d | | Open issues (now) | 106 | 1.2k | | Full report | [trust report](/tools/coqui-ai-stt/trust.md) | [trust report](/tools/ggml-org-whisper-cpp/trust.md) | ## Decision facts: whisper.cpp - **Requirements:** Requires C++ setup and knowledge; Needs audio files converted into a compatible format supported by `ggml`. - **Adopt for:** A port of OpenAI's Whisper model to C++, optimized with `ggml`, for lightweight speech-to-text transcription. - **License detail:** MIT License - permissive license that allows users to use the software in any way, including closed-source applications. ## Choose when ### Choose STT if… - License: STT is MPL-2.0, whisper.cpp is MIT. - Tags unique to STT: asr, automatic-speech-recognition, deep-learning, speech-recognition-api. - Also covers Model Training. ### Choose whisper.cpp if… - License: whisper.cpp is MIT, STT is MPL-2.0. - Requirements: Requires C++ setup and knowledge; Needs audio files converted into a compatible format supported by `ggml`.. - Tags unique to whisper.cpp: inference, openai, transformer, whisper. - You need a lightweight solution that does not require Python or PyTorch ## When NOT to use STT - Last GitHub push was 853 days ago (dormant maintenance, Mar 11, 2024). Validate activity before betting a new project on STT. - Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. - Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ## When NOT to use whisper.cpp - When you prefer to work with higher-level languages like Python which might offer more ease-of-use and extensive libraries - If your project requires real-time speech transcription and has limited computational resources as `ggml` optimization might still require significant CPU/GPU power for high-performance ## Common questions ### What is the difference between STT and whisper.cpp? STT: 🐸STT - The deep learning toolkit for Speech-to-Text. Training and deploying STT models has never been so easy.. whisper.cpp: Port of OpenAI's Whisper model in C/C++ for speech-to-text inference. See the comparison table for live GitHub stats and shared categories. ### When should I choose STT over whisper.cpp? Choose STT over whisper.cpp when License: STT is MPL-2.0, whisper.cpp is MIT; Tags unique to STT: asr, automatic-speech-recognition, deep-learning, speech-recognition-api; Also covers Model Training. ### When should I choose whisper.cpp over STT? Choose whisper.cpp over STT when License: whisper.cpp is MIT, STT is MPL-2.0; Requirements: Requires C++ setup and knowledge; Needs audio files converted into a compatible format supported by `ggml`.; Tags unique to whisper.cpp: inference, openai, transformer, whisper; You need a lightweight solution that does not require Python or PyTorch. ### When should I avoid STT? Last GitHub push was 853 days ago (dormant maintenance, Mar 11, 2024). Validate activity before betting a new project on STT. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ### When should I avoid whisper.cpp? When you prefer to work with higher-level languages like Python which might offer more ease-of-use and extensive libraries If your project requires real-time speech transcription and has limited computational resources as `ggml` optimization might still require significant CPU/GPU power for high-performance ### Is STT or whisper.cpp more popular on GitHub? whisper.cpp has more GitHub stars (51,715 vs 2,590). Stars measure visibility, not whether either tool fits your constraints. ### Are STT and whisper.cpp open source? Yes - both are open-source projects on GitHub (STT: MPL-2.0, whisper.cpp: MIT). ### Where can I find alternatives to STT or whisper.cpp? GraphCanon lists graph-backed alternatives at [STT alternatives](/tools/coqui-ai-stt/alternatives) and [whisper.cpp alternatives](/tools/ggml-org-whisper-cpp/alternatives) ([STT markdown twin](/tools/coqui-ai-stt/alternatives.md), [whisper.cpp markdown twin](/tools/ggml-org-whisper-cpp/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/coqui-ai-stt-vs-ggml-org-whisper-cpp.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, STT or whisper.cpp? STT: Dormant. whisper.cpp: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for STT and whisper.cpp? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [STT trust report](/tools/coqui-ai-stt/trust); [whisper.cpp trust report](/tools/ggml-org-whisper-cpp/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=coqui-ai-stt`](/api/graphcanon/graph?tool=coqui-ai-stt) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_