# New Release: Ultralytics v8.3.245

**URL:** <https://community.ultralytics.com/t/new-release-ultralytics-v8-3-245/1723>\
**Category:** Discussion\
**Tags:** releases, announcements, ultralytics-official\
**Created:** [January 1, 2026, 1:14pm UTC](https://community.ultralytics.com/t/new-release-ultralytics-v8-3-245/1723 "2026-01-01T13:14:42Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![glenn-jocher](https://sea1.discourse-cdn.com/flex001/user_avatar/community.ultralytics.com/glenn-jocher/32/83_2.png) [@glenn-jocher](https://community.ultralytics.com/u/glenn-jocher)\
**Post date:** [January 1, 2026, 1:14pm UTC](https://community.ultralytics.com/t/new-release-ultralytics-v8-3-245/1723/1 "2026-01-01T13:14:42Z")

</div>

## 🚀 Ultralytics v8.3.245 is live! 🖥📈📦

**Quick overview:** Ultralytics `v8.3.245` improves training/run telemetry by reporting **system hardware capacity (RAM + disk)** and logging **best model file size** at training end, plus a small docs footer refresh. No accuracy or training-logic changes ✅

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## 🌟 New Features

### 🧰 System metrics added to platform callbacks

`_get_environment_info()` now includes:

- **Total RAM (GB)** (via `psutil`)
- **Total disk capacity (GB)** (via `shutil.disk_usage("/")`)

This helps explain differences in caching behavior, performance, and out-of-memory issues across machines 🔍

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## 📦 Improvements

### 📦 Best model artifact size captured at training end

On `on_train_end()`, we now record the **best checkpoint file size** (`modelSize`) and attach it to the final training-complete payload.

Useful for:

- storage planning in CI / telemetry workflows
- comparing variants and checkpoints
- deployment constraints on edge devices 🚀

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## 🗓 Docs / Maintenance

- Docs footer year updated **2025 → 2026** (MkDocs)
- Minor comment-only clarification for tensor shape annotations (no runtime behavior change) 🧩

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## 🔧 Pull Requests Included

- Shape comment fix (no behavior change) by [@raimbekovm](https://github.com/raimbekovm) in [PR #23094](https://github.com/ultralytics/ultralytics/pull/23094)
- Telemetry + docs footer updates by [@glenn-jocher](https://github.com/glenn-jocher) in [PR #23095](https://github.com/ultralytics/ultralytics/pull/23095)

You can review the full diff in the [full changelog comparison](https://github.com/ultralytics/ultralytics/compare/v8.3.244...v8.3.245), and details in the [v8.3.245 release page](https://github.com/ultralytics/ultralytics/releases/tag/v8.3.245).

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## ✅ Try it & share feedback

Update with:

```bash
pip install -U ultralytics

```

If you run into anything unexpected (or want additional telemetry fields), reply here with your OS, Python version, `ultralytics` version, and a minimal repro. Thanks for helping improve YOLO for everyone 🙌