Targeting based on First Seen Timestamp
What it is: A built-in "First Seen" user property is now available in Guides and Surveys' remote evaluation. Cohort-based new user targeting has a reliability problem: membership updates run with a delay, so a brand-new user won't be included until after their first session has already passed.
Also shipped Mar 16, 2026Amplitude in March 2026 โ
๐ค New LLM Models Support & Bug Fixes
We've added support for new LLM models in the Voice Agent API: OpenAI GPT-5.3 Instant ( gpt-5.3-chat-latest ) OpenAI GPT 5.4 ( gpt-5.4 ) Google Gemini 3.1 Flash Lite ( gemini-3.1-flash-lite-preview ) Example: { "type": "Settings", "agent": { "think": { "provider": { "type": "open_ai", "model": "gpt-5.3-chat-latest" } } } } For the full list of supported...
Metrics Open Beta Now Supports Alerting
Metrics, currently in open beta, now support creating alerts.
Release of Mistral Small 4
Mistral Small 4 (mistral-small-2603) is a hybrid model that unifies instruct, reasoning, and coding capabilities in a single multimodal model with a 256k context window.
Release of Leanstral Code Agent
Leanstral (labs-leanstral-2603) is an open-source code agent designed for Lean 4 formal proof engineering.
LlamaIndex 0.14.18
Release Notes [2026-03-16] llama-index-agent-agentmesh [0.2.0] chore: deprecate python 3.9 once and for all ( #20956 ) llama-index-agent-azure [0.3.0] chore: deprecate python 3.9 once and for all ( #20956 ) llama-index-callbacks-agentops [0.5.0] chore: deprecate python 3.9 once and for all ( #20956 ) llama-index-callbacks-argilla [0.5.0] chore: deprecate...
Guardrails 0.9.2
- Bump lodash-es from 4.17.21 to 4.17.23 in /docs in the npm_and_yarn group across 1 directory by @dependabot [bot] in #1411 Bump pypdf from 6.7.0 to 6.7.1 in the pip group across 1 directory by @dependabot [bot] in #1413 Fix ModuleNotFoundError when installing hub validators dynamically [feat]: DB Commands fix: preserve falsy values in safe_get [chore]...
More from AmplitudeEvery Amplitude release โ
Persisting Table Filter in URL & Persisting Collapsed Card State in Experiment/Flags UI
What it is: Two state persistence improvements for Experiment and Feature Flags. Experiment table filters now encode into the URL, so filtering by status, tag, or owner produces a link you can bookmark or send to a teammate.
Bing Ads Source Ingestion
Description: Connect to Bing Ads as a source Why: Teams no longer need to rely on multiple tools and manual spreadsheets to measure campaign impact. Marketers can now import Bing ads campaign data into Amplitude to analyze spend and performance alongside product behavior.
Strongly Typed Payloads
What it is: Feature Flags and Experiments now support typed variant payloads, with three schema options depending on how much structure you need. Simple types (string, number, boolean) cover most cases. Array and object types handle more open-ended structures. For highly structured payloads, you can write a full JSON Schema.
Transformed Properties Targeting in Experiment, Feature Flags, and Guides & Surveys
What it is: The Target Segment builder in Experiment, Feature Flags, and Guides & Surveys now surfaces transformed user properties in the property picker alongside standard ones.
Global Agent Audit Tab
What it is: Good news! Admins can now view all user activity within Global Agent across their organization through a new Audit Tab in AI Controls. The table surfaces all threads, giving admins insight into how users are interacting with Global Agent, as well as the ability to monitor usage and verify things are running smoothly.
Session Replay JSON Path Event Query
What it is: A new JSONPath query tab in the Session Replay event viewer lets you target specific nested fields inside raw event payloads. Instead of scanning the full payload manually, you can write a JSON path expression to filter, inspect, or compare exactly the values you need.
Browser & Swift Unified SDK
Description: The Unified SDK provides a single entry point for all Amplitude features, including Analytics, Experiment, Session Replay, and Guides and Surveys. Why: The Unified SDK consolidates everything into one package, making it easier to get started, reducing maintenance burden, and ensuring all Amplitude features work seamlessly together out of the...
Job Details Drawer (For BigQuery)
Description: The Job Details Drawer gives customers detailed visibility into the progress and status of their BigQuery data warehouse import jobs. Previously, users could only see basic success/failure status and a download link for error logs.