What’s new · Sentry · Sep 2026 (checked Oct 2026)
What’s new in Sentry (Sep 2026): changes error and agent ops should notice
Dated notes for people who run Sentry. Not a second Sentry AI review. Sources are three changelog pages we opened on 3 Oct 2026. If a price was not on the page, we do not add one.
What this page covers
Five items error and agent ops can check. We opened Sentry’s changelog, not a recap blog, for the sentences below. The review page explains how to use Seer day to day. This page is only what those September posts said, plus what they did not say.
Major features (with how someone uses them)
Examples at a glance: each feature has a concrete ops example plus a short Try this.
1. Five changes with sources (primary)
What it is: These are the five we could tie to a public Sentry page on 3 Oct 2026. (1) Seer Agent can write through the Sentry API, 29 Sep 2026. (2) Datadog and Google Cloud connectors, same page. (3) Pull-request iteration, 21 Sep 2026. (4) Agent Tracing generally available, 11 Sep 2026. (5) The beta sentence on the 29 Sep page: Seer Agent is in beta and free for all users. Links are in the header.
Primary workflow:
From Sentry’s public Sep 2026 notes, list 5 ops-relevant changes — cite sources.
2. 29 Sep: writes, and connectors that use API keys
What it is: The page Seer Agent updates is dated September 29, 2026. It says Seer Agent can write through the Sentry API: custom dashboards and widgets, monitors and alerts, assign or resolve or archive issues, and save queries and views. It says Seer uses your permissions, asks before a write it does not have scope for, and that access does not carry between chats. The same page says Datadog and Google Cloud Platform can be read through Seer Connectors using API keys, not OAuth, with a key that already has access to the environments you need. It says you can try this in the Sentry UI or Slack. We did not re-test the clicks.
Write check:
Write whether your org has used a Seer write (alert, resolve, or dashboard) and whether a Datadog or GCP connector exists. Unknown is allowed.
3. 21 Sep: iteration on pull requests Seer opened
What it is: The page Seer now iterates on the pull requests it opens is dated September 21, 2026. It says follow-up commits land on the existing PR instead of a brand-new PR. It describes capped automatic CI fixes, feedback from the Autofix panel, GitHub comments that start with @sentry (write access required), and review comments it can pick up. It says PR iteration works with GitHub only, that Seer only changes code during iteration, and that changes are still proposals: read the diff before you merge. We did not merge anything.
Diff check:
Open one Seer pull request if you have one. Write whether iteration is on and whether anyone merged without reading the diff.
4. 11 Sep: Agent Tracing is GA, and what we will not price
What it is: The page Agent Tracing is now GA is dated September 11, 2026. It says Agent Tracing captures model calls, tool executions, sub-agent handoffs, token usage, and cost as spans, and that conversation IDs show the message exchange. It also describes conversation titles, an overview chart of cost, conversation count, and total messages, and timeline views. It points at Explore, then Agents. The 29 Sep page says the Seer Agent beta is free for all users. None of these three pages published a full Sentry plan price list. We do not invent one. The Sentry AI review is the how-to. Sentry vs Datadog is the boundary with Datadog.
Date check:
For each of the three URLs, write the date on the page. If a teammate adds a price, ask them which sentence it came from.
Pricing context (October 2026)
The September pages we opened do not publish Sentry’s plan grid. The 29 Sep 2026 page says Seer Agent is in beta and free for all users. Agent Tracing’s 11 Sep page describes cost as something the product can display on a chart. That is not a price for the feature. Your invoice remains the source.
October 2026 review of September notes.
Uncertainty: We did not confirm which orgs have the beta, the GitHub app permission, or the connectors. Slack availability is stated by Sentry; we did not click it. No customer counts were on these pages.
When it’s useful (honest take)
Useful when someone asks what Sentry said in September and you want links. Less useful as a buying guide. That is the Sentry AI review. Less useful if you needed a price change: these three pages did not publish one, aside from the beta sentence quoted above.
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Related options (educational)
| Need | Better home | Why |
|---|---|---|
| How to use it | Sentry AI review | Triage and proposals |
| September notes | This page | Only what we could cite |
| Datadog boundary | Sentry vs Datadog | Errors versus graphs |
| A price | Sentry’s pricing page and your invoice | Not these changelog posts |
FAQ
What did we verify?
Three public changelog pages, opened 3 Oct 2026, with the dates printed above.
Is Seer free?
The 29 Sep page says the Seer Agent beta is free for all users. We did not generalize that to all of Sentry.
Did pull-request iteration ship in September?
The page is dated 21 Sep 2026. It says GitHub only, and that you should read the diff.
What did we not verify?
Your toggles, a plan price grid, and whether your GitHub app has the new permission.
Optional next step (if seats overlap)
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