Local Prompt Tester
Run a small local model in your browser before spending API money. No API key, no account, optional WebLLM local mode, streaming output and shareable result card.
Local mode uses WebGPU and may download model files to your browser cache. Your prompt is not sent to Bluesky Labs servers during local runs. Performance varies by device, browser, GPU, memory and model.
Where is the local model stored? (모델 저장 위치 / 삭제 방법)
Browser site storage cache
WebLLM model files are not saved to your normal Downloads folder. They are cached inside your browser’s site storage for this domain. Depending on the browser and WebLLM cache settings, the files may be stored through Cache Storage, IndexedDB, or OPFS. If you clear site data for bluesky-labs.com, the downloaded model cache may be removed and the model may need to be downloaded again next time. Model files are loaded into your device's RAM/VRAM during execution, which is separate from their local storage location.
WebLLM 모델 파일은 일반 다운로드 폴더에 저장되지 않습니다. bluesky-labs.com 사이트 전용 브라우저 저장공간에 캐시됩니다. 브라우저와 WebLLM 설정에 따라 Cache Storage, IndexedDB, OPFS 같은 저장소가 사용될 수 있습니다. bluesky-labs.com의 사이트 데이터를 삭제하면 모델 캐시도 삭제될 수 있으며, 다음 실행 시 다시 다운로드가 필요할 수 있습니다. 실행 중에는 기기의 RAM/VRAM에 임시 로드되며, 저장 장치 내 파일 보관소와 실행 메모리는 다르게 관리됩니다.
How to remove downloaded models (삭제 방법)
To remove downloaded model files, clear site data for bluesky-labs.com in your browser settings. In Chrome or Edge, you can also open DevTools → Application → Storage → Clear site data.
다운로드된 모델 파일을 지우려면 브라우저 설정에서 bluesky-labs.com 사이트 데이터를 삭제하세요. Chrome 또는 Edge에서는 개발자도구 → Application → Storage → Clear site data에서도 삭제할 수 있습니다.
⚠️ Caution: Clearing the cache does not delete anything from your normal file folders. It only removes browser-stored data for this site. After clearing, the model may need to download again.
Model availability depends on WebLLM's supported MLC model list and your browser/device memory. First run can take several minutes.
* WebLLM models are saved to browser site cache, not normal downloads. Where is the model stored?
Local runtime status
Download / init progress
How to clear downloaded model cache:
To remove browser-cached model files, clear site data for bluesky-labs.com in your browser settings, or open DevTools → Application → Storage → Clear site data. Normal file folders are unaffected.
(다운로드 캐시 삭제) 브라우저 설정에서 bluesky-labs.com 사이트 데이터를 삭제하거나, 크롬 개발자도구(F12) → Application → Storage → Clear site data를 진행하십시오. 로컬 파일 시스템에는 영향을 주지 않습니다.
Streaming output
Rule-based preflight
Use this quick checklist even before the local model loads. It catches vague prompts, missing output formats and risky guarantee language.
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Safe wording
This tool does not claim GPT-4 quality, guaranteed privacy, or guaranteed prompt performance. It is a local test lab with device-dependent results.