Starstruk Logo MarkStarstruk

v0.1.5

ace-step/ACE-Step-1.5v0.1.5Mar 25, 2026by ChuxiJ

AI Summary

Bug fix focused release addressing critical issues with GPU output, API initialization, and security vulnerabilities. Also adds text task enhancements with external AI helper modules.

Key Highlights

  • Restored lazy-load model initialization (no download at startup)
  • Fixed GPU NaN/noise and garbage output issues
  • Replaced pickle with JSON serialization for security
  • Added thread safety to i18n, API key, and cache singletons
  • Text tasks with external AI helper modules and LM discovery

New Features

  • External AI helper modules for text tasks
  • LM model discovery cache
  • Provider configuration support
  • Model inventory with supported_task_types

Full Release Notes

## What's New

### Bug Fixes
- **API server**: Restore lazy-load model initialization as default behavior. Models are no longer downloaded at startup — they initialize on-demand when the first request arrives.
- **GPU**: Resolve legacy GPU NaN/noise and duration=-1 garbage output (#924, #927, #929)
- **GPU**: Force pt backend on legacy CUDA GPUs (Titan Xp, etc.) to prevent vllm crashes (#932)
- **Security**: Replace pickle with JSON serialization in ModelRunner shared-memory IPC (#860)
- **Lego task**: Fix instruction mismatch causing noise output (#925)
- **Gradio**: Fix variable language not bound error in start script (#920)
- **i18n**: Per-request language isolation via ContextVar (#888)
- **API**: Fix crash on null duration, generation corruption, and locale parsing (#797, #854, #779)
- **Thread safety**: Add locking to i18n, API key, and cache singletons (#878)
- **AutoGen**: Capture repaint settings in batch parameter snapshot (#922)
- **ADG**: Fix ADG not usable with batches (#832)

### Features
- **Text tasks**: Add external AI helper modules, LM model discovery cache, and provider config (#881, #883, #884)
- **Model inventory**: Add supported_task_types and expand cover strength aliases

### Other
- **VST3**: Move VST3 plugin to standalone repo ace-step/acestep.vst3 (#935)

**Full Changelog**: https://github.com/ace-step/ACE-Step-1.5/compare/v0.1.4...v0.1.5