# Changelog 2025 09 05

Here are the most relevant improvements we've made since the last release:

## 🔍 Opik Trace Analyzer Beta is Live!

We're excited to announce the launch of **Opik Trace Analyzer** on Opik Cloud!

What this means: faster debugging & analysis!

Our users can now easily understand, analyze, and debug their development and production traces.

Want to give it a try? All you need to do is go to one of your traces and click on "Inspect trace" to start getting valuable insights.

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<img src="../img/apps/opik-documentation/documentation/fern/img/changelog/2025-09-05/opik_trace_analyzer.png" alt="Opik Trace Analyzer Beta interface showing trace analysis and debugging features">
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## ✨ Features and Improvements

- We've finally added **dark mode** support! This feature has been requested many times by our community members. You can now switch your theme in your account settings.

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<img src="../img/apps/opik-documentation/documentation/fern/img/changelog/2025-09-05/dark_mode.png" alt="Dark mode theme toggle in Opik account settings showing light and dark theme options">
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- Now you can filter the widgets in the metrics tab by trace and threads attributes

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<img src="../img/apps/opik-documentation/documentation/fern/img/changelog/2025-09-05/metrics_filters.png" alt="Metrics tab filters showing trace and thread attribute filtering options">
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- Annotating tons of threads? We've added the ability to export feedback score comments for threads to CSV for easier analysis in external tools.
- We have also improved the discoverability of the experiment comparison feature.
- Added new filter operators to the Experiments table

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<img src="../img/apps/opik-documentation/documentation/fern/img/changelog/2025-09-05/experiment_operators.png" alt="Experiment table filter operators showing advanced filtering options">
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- Adding assets as part of your experiment's metadata? We now display clickable links in the experiment config tab for easier navigation.

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<img src="../img/apps/opik-documentation/documentation/fern/img/changelog/2025-09-05/clickable_assets_metadata.png" alt="Clickable assets and metadata links in experiment configuration tab showing improved navigation">
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## 📚 Documentation

- We've released [Opik University](/guides/development-optimization-runs-quickstart)! This is a new section of the docs full of video guides explaining the product.

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<img src="../img/apps/opik-documentation/documentation/fern/img/changelog/2025-09-05/opik_university.png" alt="Opik University documentation section showing video guides and tutorials">
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## 🔌 SDK & Integration Improvements

- Enhanced _LangChain_ integration with comprehensive tests and build fixes
- Implemented new search\_prompts method in the Python SDK
- Added [documentation for models, providers, and frameworks supported for cost tracking](https://www.comet.com/tracing/advanced/cost_tracking#supported-models-providers-and-integrations)
- Enhanced Google ADK integration to log **error information to corresponding spans and traces**

And much more! 👉 [See full commit log on GitHub](https://github.com/comet-ml/opik/compare/1.8.33...1.8.42)

_Releases_: `1.8.34`, `1.8.35`, `1.8.36`, `1.8.37`, `1.8.38`, `1.8.39`, `1.8.40`, `1.8.41`, `1.8.42`

## Related pages

- [Changelog 2026 09 21](./getting-started-changelog-2026-09-21.md)
- [Changelog 2026 09 14](./getting-started-changelog-2026-09-14.md)
- [Changelog 2026 09 07](./getting-started-changelog-2026-09-07.md)
- [Changelog 2026 08 31](./getting-started-changelog-2026-08-31.md)
- [Changelog 2026 08 24](./getting-started-changelog-2026-08-24.md)
- [Changelog 2026 08 17](./getting-started-changelog-2026-08-17.md)
- [Changelog 2026 08 10](./getting-started-changelog-2026-08-10.md)
- [Changelog 2026 07 20](./getting-started-changelog-2026-07-20.md)
- [Changelog 2026 07 13](./getting-started-changelog-2026-07-13.md)
- [Changelog 2026 07 06](./getting-started-changelog-2026-07-06.md)

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