Releasesby GlyphLabeled Events in Custom Events
Description: Labeled events can now be used in custom events as well as inline custom events on charts. Why: As part of the continued push for autotrack, labeled events deserve to be more of a first class citizen in Amplitude - customers aren't going to understand the nuance that a labeled event is a custom event "under the hood".
Also shipped Dec 8, 2025Amplitude in December 2025 →
Introducing iceberg-js: A JavaScript Client for Apache Iceberg
Supabase introduced iceberg-js, a vendor-agnostic JavaScript client for the Apache Iceberg REST Catalog API, enabling type-safe catalog management.
Workers - Python cold start improvements
Python Workers now feature improved cold start performance, reducing initialization time for new Worker instances. This improvement is particularly noticeable for Workers with larger dependency sets or complex initialization logic. Every time you deploy a Python Worker, a memory snapshot is captured after the top level of the Worker is executed.
Workers - Easy Python package management with Pywrangler
We are introducing a brand new tool called Pywrangler, which simplifies package management in Python Workers by automatically installing Workers-compatible Python packages into your project.
Workers - Wrangler config is optional when using Vite plugin
When using the Cloudflare Vite plugin to build and deploy Workers, a Wrangler configuration file is now optional for assets-only (static) sites. If no wrangler.toml , wrangler.json , or wrangler.jsonc file is found, the plugin generates sensible defaults for an assets-only site.
Workers - Configure Workers programmatically using the Vite plugin
The Cloudflare Vite plugin now supports programmatic configuration of Workers without a Wrangler configuration file. You can use the config option to define Worker settings directly in your Vite configuration, or to modify existing configuration loaded from a Wrangler config file.
View predictions in Cloud Provider Observability
You can now view machine learning predictions for drilldown instances of preconfigured dashboards in Cloud Provider Observability using the Predict button. Predictions help you ensure resources are available during spikes in usage, as well as help you decrease the amount of resources due to over provisioning.
More from AmplitudeEvery Amplitude release →
SESSIONTOTALS now works in Event Segmentation
Description: You can now use SESSIONTOTALS(event) to count how many sessions include a given event or in a metric. Small update, big quality-of-life win. :tada: Why: Streamlines using sessions in the Events Segmentation chart. No longer need to switch charts to count sessions! Where: Event segmentation formulas.
Default Threshold for Session Replay List
A default threshold of 10 seconds has been implemented for the session replay list. This change is a significant quality of life improvement for organizations that collect very short replays. Who: Live for all organizations. Why: No one wants to see 0s or 1s replays.
Improved SR querying - users can view all (or at least way more) of their replays
Description: This has to be one of the most impactful improvements that we will ever deliver for Session Replay customers. Without doing anything, customers are now able to view anywhere from 1.1-10000x more replays than they could before. Previously, to surface a replay, the session ID on the replay had to match at least one event's session ID.
AI Controls + Org-Level AI Context
Description: We’ve added a new tab, AI Controls, in org settings that will be the new home for Amplitude AI configs, context management, and enterprise AI controls (in the future!). The first feature in AI Controls is an AI Context input which lets customers provide org-level context to Ask AI and Agents.
Capture Session Replays via the Chrome Extension
Description: You can now capture Session Replays directly from the Amplitude Chrome extension, no code changes required. By enabling Session Replay in Event Test Mode, you can instantly record and inspect real user experiences on any site that supports Session Replay. This is a powerful way to test run Session Replay without contacting a developer.
Web Vitals Metrics Hub
Description: Visualize web vitals with our dedicated Web Vitals marketing hub. Enable Web Vitals on your browser SDK to start collecting data, and then visit our new Marketing Hub to be able to visualize and interact with the data. Why: Measure your site performance and understand your SEO better without the need for an extra 3rd party provider.
New Duration Estimator
Description: The new Duration Estimator transforms how you plan web and feature experiments. By automating the busywork and making trade-offs transparent, you can now confidently design tests with realistic timelines without leaving Amplitude or manually pulling historical data.
TRC General Availability
The TRC feature has been generally available (GA) and is on for all applicable organizations.