New Release: Ultralytics v8.3.195

Discussion
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Title: Ultralytics v8.3.195: Faster startup, smarter checkpoints, and OBB fixes :rocket:

Summary
Ultralytics v8.3.195 focuses on speed and reliability. We removed the external py-cpuinfo dependency in favor of a built-in, cross-platform CPU info utility for faster startup and leaner installs, alongside fixes for checkpoints, OBB predictions, and dataset verification. YOLO11 remains the latest stable and recommended model for all use cases. :sparkles:

New Features

  • Zero-dependency CPU info (priority)
    • Introduces ultralytics.utils.cpu.CPUInfo for consistent, fast CPU detection across macOS/Linux/Windows. This change removes the py-cpuinfo dependency and updates get_cpu_info() to use CPUInfo.name(). See details in the submission by Glenn Jocher in PR #21972: Zero-dependency 30X faster CPU info, with author credit to Glenn Jocher (@glenn-jocher).
      • Read the change: PR #21972: Zero-dependency 30X faster CPU info

Improvements

  • Checkpoint loading restored all args
    • model.args now preserves the full argument dictionary on load; the DEFAULT_CFG_KEYS filter was removed. Thanks to Y-T-G in PR #21968: Restore all arguments on checkpoint load.
      • Review the improvement: PR #21968: Restore all arguments on checkpoint load
  • Typing modernization
    • Migrated legacy typing generics (List/Dict/…) to Python 3.9 built-ins (list, dict, …). No behavior changes; cleaner codebase. See PR #21961: Replace Uppercase Python 3.8 Types → 3.9 types by Glenn Jocher (@glenn-jocher).
      • See the refactor: PR #21961: Replace Uppercase Python 3.8 Types → 3.9 types

Bug Fixes

  • OBB prediction fix
    • Disabled inappropriate box clipping for OBB when xywh=True in scale_boxes to prevent width/height distortion. Thanks to Y-T-G in PR #21950: Disable box clipping for OBB predictions.
      • Inspect the fix: PR #21950: Disable box clipping for OBB predictions
  • Dataset verification fix
    • Corrected a typo in verify_image_label to use the keypoint parameter, resolving shape errors with pose datasets. Thanks to first-time contributor LH-and-FPGA in PR #21965: Fix keypoints typo in verify_image_label.
      • View the patch: PR #21965: Fix keypoints typo in verify_image_label

Purpose & Impact

  • Faster startup and leaner installs
    • Eliminates a dependency and dramatically accelerates CPU info retrieval, especially noticeable on cold starts and lightweight scripts. Fewer environment conflicts and simpler deployments for constrained or offline environments.
  • More reliable training/resume/export
    • Preserving all checkpoint args improves compatibility with custom configs, resume workflows, exports, and Ultralytics HUB pipelines. Note: model.args may include additional keys; ensure downstream code handles them gracefully.
  • More accurate predictions and verification
    • Correct OBB xywh handling prevents subtle geometry errors. Pose dataset verification is more robust due to the keypoint variable fix.

Quick Tip
Get a human-readable CPU name anywhere in your code:

from ultralytics.utils.cpu import CPUInfo

print(CPUInfo.name())  # e.g., "Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz"

How to Update

  • Upgrade in one line:
pip install -U ultralytics
  • Run your existing YOLO workflows as usual. YOLO11 is the recommended default for detection, segmentation, pose, classification, and OBB tasks.

Call for Feedback
We’d love your feedback on the new CPU utility, checkpoint arg preservation, and OBB behavior. Share your thoughts in our Discussions forum or open an issue directly from the release page for v8.3.195.

Credits

  • Zero-dependency CPU info and typing modernization by Glenn Jocher (@glenn-jocher) — see PR #21972 and PR #21961.
  • Checkpoint argument restoration and OBB prediction fix by Y-T-G — see PR #21968 and PR #21950.
  • Dataset verification fix by first-time contributor LH-and-FPGA — see PR #21965. Thank you for contributing!

What’s Changed

  • Replace Uppercase Python 3.8 Types → 3.9 types in PR #21961 by Glenn Jocher (@glenn-jocher)
  • Restore all arguments on checkpoint load in PR #21968 by Y-T-G
  • Disable box clipping for OBB predictions in PR #21950 by Y-T-G
  • Fix keypoints typo in verify_image_label in PR #21965 by LH-and-FPGA
  • Zero-dependency 30X faster CPU info in PR #21972 by Glenn Jocher (@glenn-jocher)

New Contributor

  • Welcome and thanks to LH-and-FPGA for their first contribution, detailed in PR #21965: Fix keypoints typo in verify_image_label.

Release Links

  • Explore the full changelog in the comparison from v8.3.194 to v8.3.195.
  • Read the official release notes on the v8.3.195 release page.

Thanks for being part of the YOLO community and for helping us make Ultralytics faster and more reliable with every release. Enjoy v8.3.195! :rocket: