Comparison
whisper.cpp vs whisper-ctranslate2
Verdict
Pick whisper.cpp if a port of OpenAI's Whisper model to C++, optimized with `ggml`, for lightweight speech-to-text transcription; pick whisper-ctranslate2 if whisper-ctranslate2 provides a GPU-accelerated Docker-based command-line interface for Whisper speech recognition models with easy file input.
Markdown twin · whisper.cpp alternatives · whisper-ctranslate2 alternatives
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Trust & integrity
| Signal | whisper.cpp | whisper-ctranslate2 |
|---|---|---|
| Maintenance | Very active (0d since push) As of 5d · github_public_v1 | Slowing (146d since push) As of 6d · github_public_v1 |
| Provenance | Not a fork · Organization account As of 5d · github_public_v1 | Not a fork · Organization account As of 6d · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 5d · osv@v1 | No published findings from this source as of 2026-07-11 As of 6d · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- whisper.cpp
- Port of OpenAI's Whisper model in C/C++ for speech-to-text inference
- whisper-ctranslate2
- Whisper command-line client compatible with original OpenAI client based on CTranslate2
Stars
- whisper.cpp
- 52k
- whisper-ctranslate2
- 1.3k
Forks
- whisper.cpp
- 5.9k
- whisper-ctranslate2
- 126
Open issues
- whisper.cpp
- 1.2k
- whisper-ctranslate2
- 12
Language
- whisper.cpp
- C++
- whisper-ctranslate2
- Python
Adopt for
- whisper.cpp
- A port of OpenAI's Whisper model to C++, optimized with `ggml`, for lightweight speech-to-text transcription.
- whisper-ctranslate2
- Whisper-ctranslate2 provides a GPU-accelerated Docker-based command-line interface for Whisper speech recognition models with easy file input.
Persona
- whisper.cpp
- -
- whisper-ctranslate2
- -
Runtime
- whisper.cpp
- -
- whisper-ctranslate2
- -
License
- whisper.cpp
- MIT License - permissive license that allows users to use the software in any way, including closed-source applications.
- whisper-ctranslate2
- MIT
Last pushed
- whisper.cpp
- Jul 11, 2026
- whisper-ctranslate2
- Feb 14, 2026
Categories
- whisper.cpp
- Inference & Serving, Speech & Audio
- whisper-ctranslate2
- Speech & Audio
Trust and health
Maintenance
- whisper.cpp
- Very active (96%)
- whisper-ctranslate2
- Slowing (36%)
Days since push
- whisper.cpp
- 0d
- whisper-ctranslate2
- 146d
Open issues (now)
- whisper.cpp
- 1.2k
- whisper-ctranslate2
- 12
OSV dependency advisories
- whisper.cpp
- No lockfile (source not queried)
- whisper-ctranslate2
- No published findings from this source as of 2026-07-11
Full report
- whisper.cpp
- Trust report
- whisper-ctranslate2
- Trust report
Typed relationship
whisper.cpp alternative whisper-ctranslate2Whisper-ctranslate2 provides a Whisper command-line client using CTranslate2, which could be seen as an alternative to whisper.cpp for users interested in CTranslate2's optimizations.
Choose whisper.cpp if…
- whisper.cpp is primarily C++; whisper-ctranslate2 is Python.
- Requirements: Requires C++ setup and knowledge; Needs audio files converted into a compatible format supported by `ggml`..
- Whisper-ctranslate2 provides a Whisper command-line client using CTranslate2, which could be seen as an alternative to whisper.cpp for users interested in CTranslate2's optimizations.
- Tags unique to whisper.cpp: inference, transformer.
- Also covers Inference & Serving.
- You need a lightweight solution that does not require Python or PyTorch
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
Choose whisper-ctranslate2 if…
- whisper-ctranslate2 is primarily Python; whisper.cpp is C++.
- Whisper-ctranslate2 provides a Whisper command-line client using CTranslate2, which could be seen as an alternative to whisper.cpp for users interested in CTranslate2's optimizations.
- Tags unique to whisper-ctranslate2: ctranslate2, docker.
- whisper-ctranslate2 ships Docker support for self-hosted deployment.
- Require Whisper model compatibility in a preconfigured Docker container
When NOT to use whisper-ctranslate2
- Seeking non-Dockerized tool or do not want to use containers
- Do not have access to a GPU and need better CPU performance options
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (ggml-org/whisper.cpp) · observed Jul 11, 2026
- GitHub forks (ggml-org/whisper.cpp) · observed Jul 11, 2026
- Last push (ggml-org/whisper.cpp) · observed Jul 11, 2026
- License file (MIT) · observed Jul 11, 2026
- Decision facts (enrichment) · observed Jul 12, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (Softcatala/whisper-ctranslate2) · observed Jul 11, 2026
- GitHub forks (Softcatala/whisper-ctranslate2) · observed Jul 11, 2026
- Last push (Softcatala/whisper-ctranslate2) · observed Feb 14, 2026
- License file (MIT) · observed Jul 11, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: whisper.cpp 52k · whisper-ctranslate2 1.3k (synced Jul 11, 2026).
Common questions
- What is the difference between whisper.cpp and whisper-ctranslate2?
- whisper.cpp: Port of OpenAI's Whisper model in C/C++ for speech-to-text inference. whisper-ctranslate2: Whisper command-line client compatible with original OpenAI client based on CTranslate2. See the comparison table for live GitHub stats and shared categories.
- When should I choose whisper.cpp over whisper-ctranslate2?
- Choose whisper.cpp over whisper-ctranslate2 when whisper.cpp is primarily C++; whisper-ctranslate2 is Python; Requirements: Requires C++ setup and knowledge; Needs audio files converted into a compatible format supported by
ggml.; Whisper-ctranslate2 provides a Whisper command-line client using CTranslate2, which could be seen as an alternative to whisper.cpp for users interested in CTranslate2's optimizations; Tags unique to whisper.cpp: inference, transformer; Also covers Inference & Serving; You need a lightweight solution that does not require Python or PyTorch. - When should I choose whisper-ctranslate2 over whisper.cpp?
- Choose whisper-ctranslate2 over whisper.cpp when whisper-ctranslate2 is primarily Python; whisper.cpp is C++; Whisper-ctranslate2 provides a Whisper command-line client using CTranslate2, which could be seen as an alternative to whisper.cpp for users interested in CTranslate2's optimizations; Tags unique to whisper-ctranslate2: ctranslate2, docker; whisper-ctranslate2 ships Docker support for self-hosted deployment; Require Whisper model compatibility in a preconfigured Docker container.
- 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
ggmloptimization might still require significant CPU/GPU power for high-performance - When should I avoid whisper-ctranslate2?
- Seeking non-Dockerized tool or do not want to use containers Do not have access to a GPU and need better CPU performance options
- Is whisper.cpp or whisper-ctranslate2 more popular on GitHub?
- whisper.cpp has more GitHub stars (51,715 vs 1,325). Stars measure visibility, not whether either tool fits your constraints.
- Are whisper.cpp and whisper-ctranslate2 open source?
- Yes - both are open-source projects on GitHub (whisper.cpp: MIT, whisper-ctranslate2: MIT).
- Where can I find alternatives to whisper.cpp or whisper-ctranslate2?
- GraphCanon lists graph-backed alternatives at whisper.cpp alternatives and whisper-ctranslate2 alternatives (whisper.cpp markdown twin, whisper-ctranslate2 markdown twin), 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 mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, whisper.cpp or whisper-ctranslate2?
- whisper.cpp: Very active. whisper-ctranslate2: Slowing. 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 whisper.cpp and whisper-ctranslate2?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: whisper.cpp trust report; whisper-ctranslate2 trust report.