# Loop v2026.01.29 - Beta Release

**URL:** https://forums.k8slens.dev/t/loop-v2026-01-29-beta-release/6827
**Category:** Lens Loop
**Created:** [January 29, 2026, 12:33pm UTC](https://forums.k8slens.dev/t/loop-v2026-01-29-beta-release/6827 "2026-01-29T12:33:02Z")
**Posts on this page:** 1
**Page:** 1

<div class="post-metadata">

### Author: ![jakolehm](https://forums.k8slens.dev/letter_avatar_proxy/v4/letter/j/e79b87/32.png) [@jakolehm](https://forums.k8slens.dev/u/jakolehm)
#### Post date: [January 29, 2026, 12:33pm UTC](https://forums.k8slens.dev/t/loop-v2026-01-29-beta-release/6827/1 "2026-01-29T12:33:02Z")

</div>

This beta introduces datasets and evaluation workflows, enabling you to organize LLM spans, run evaluations with custom evaluators, compare alternative responses with remix, and track results over time.

## Features & Enhancements

- **Datasets** — Create and manage datasets of LLM spans with full CRUD operations, version history, and multi-row selection. Use datasets to organize spans for evaluation and comparison workflows.
- **Dataset Remix** — Generate alternative LLM responses for dataset spans using different models or providers. Compare outputs side-by-side with inline expandable comparison view and track results in a leaderboard.
- **Evaluators & Evaluations** — Define custom evaluators with prompt templates including built-in defaults. Run evaluations against spans or entire datasets with live streaming progress updates. Control evaluation runs with stop/restart  
capabilities.
- **Manual Scoring** — Manually score dataset spans with custom score titles for human-in-the-loop evaluation workflows.
- **Evaluation Results** — View evaluation results with delta comparisons from previous runs, variance statistics per evaluator, and visual stat bars for quick insights.
- **Improved Onboarding** — Redesigned welcome page with interactive demo project containing pre-seeded data and automatic navigator expansion for first-time users.

## Fixes & Improvements

- **Column Persistence** — Fixed column order and visibility not persisting correctly in spans table.
- **Timestamp Handling** — Improved nanosecond timestamp handling across the codebase to prevent precision issues.
- **Cost Tracking** — Fixed floating-point precision artifacts in cost calculations and improved cost chart accuracy.
- **UI Improvements** — Various fixes for table styling, tooltip behavior, context menu focus, and layout stability.
- **Model Prices** — Updated model pricing and context window data.

## Screenshots

 ![image](https://forums.k8slens.dev/original/2X/8/85e4a6758ddb3b7e1eef43fa0d0b8a8233e0a5ba.png)

 ![image](https://forums.k8slens.dev/original/2X/f/f1d80ca2221f232a8755114c5ce4e57e83f048d8.jpeg)

 ![image](https://forums.k8slens.dev/original/2X/6/693efe19b8d26c50ee33e3d112a6211cb4f57e04.png)

 ![image](https://forums.k8slens.dev/original/2X/f/f27abd209205a517d454a53e2c97f7ad69d3a5a9.png)