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Outage tracker

Buildkite: the full evidence record

The last 24 hours in detail, 46 days of measured availability, a 12-month summary, our own incident log, Buildkite's declared record, and how the two compare.

← Back to Buildkite's live status

We started measuring Buildkite on August 22, 2026, which is 46 days ago. Everything below covers that period, not the full 90 days a longer-tracked service would show.

Email me the next time we see Buildkite go down

Measured by our own probes from ten regions, not Buildkite's status page. One email when a measured outage opens and one when it closes, after you confirm the address. No account, no card.

The last 24 hours

What happened most recently, on one time axis: our own probe readings by surface, how many people reported a problem, and what Buildkite's own status page declared. Below it, any public chatter we saw about Buildkite and the extra probe it triggered.

The last 24 hours on one axis: what our probes read for each surface we check, how many people reported a problem, and what Buildkite's own status page declared. Three records side by side; none of them changes another.

Our probes, web
Our probes, api (primary)
Unverified user reportsNo reports about Buildkite in the last 24 hours, which is not evidence that nothing is wrong.
Buildkite's status pageNo incident declared in the last 24 hours.

Each probe cell is the worst reading across every region in that quarter hour: one region that did not answer colours the cell, never an average. An amber cell is a reading that answered, but at three times or more its 7-day median for three checks running: slow is not down, and we say which. A filtered reading stays neutral, because a refused probe is not an outage. Report bars count unverified reports, not people we verified; they never change our reading. The status-page lane is Buildkite's own declaration, shown as they made it.

Third-party chatter, labeled

Public posts from the last hour that mention Buildkite next to an outage word (“down”, “outage”, “not working”). This is what other people said in public, collected by keyword: not something we measured, and not the user reports above. It never affects the verdict.

No matching public posts in the last hour from the sources we watch.

Availability by region

Availability is measured probes that succeeded, divided by every probe we attempted, per region. Not interpolated, not smoothed, and never computed for a region with zero recorded samples.

RegionAvailabilityProbes recorded
US-East100.00%6283
US-West100.00%6273
Europe100.00%6203
Asia-Pacific100.00%5964
US-Central100.00%2399
Canada100.00%2398
UK100.00%2396
Southeast Asia100.00%2365
Australia100.00%2361
South America100.00%2388

Monthly summary

Tracking Buildkite since Aug 22, 2026. In that time our probes detected no outage. Months before that date are not tracked and carry no figure.

MonthUptimeOutagesDowntime
Nov 2025not tracked
Dec 2025not tracked
Jan 2026not tracked
Feb 2026not tracked
Mar 2026not tracked
Apr 2026not tracked
May 2026not tracked
Jun 2026not tracked
Jul 2026not tracked
Aug 2026 from Aug 22, 2026100%00 min
Sep 2026100%00 min
Oct 2026100%00 min

Uptime here is the share of each month in which our probes had no outage open for Buildkite: two consecutive failed readings from a region opens one, the first clean reading closes it. Any detected outage counts, including one seen from a single region, and an outage that crosses midnight on the first of a month is counted in both months with its minutes split. User reports, public posts and Buildkite's own status page contribute nothing to these figures.

Our incident log

Every outage our own probes detected for Buildkite in the last 90 days, or since we started measuring it if that is more recent. This list is probe-only: Buildkite's own declared incidents appear further down this page in their own attributed section, never merged with what we measured here. User reports live on the live page, in their own labeled block.

No outages detected for Buildkite since we started measuring it on August 22, 2026. We show nothing from before that date.

Their declared record

Buildkite's own incident history, taken from their public status feed. This is their account of what happened, not our measurement, and it never changes the incident log above or the other way around.

Small number of incoming GitHub Webhook failingMinor incident
Oct 1, 2026, 6:10 AM UTC to Oct 1, 2026, 6:57 AM UTC (47 min)resolved
their latest update (Oct 1, 2026, 6:57 AM UTC): The error rate has returned to normal levels.
macOS hosted agent jobs not startingPartial outage
Sep 30, 2026, 6:30 AM UTC to Sep 28, 2026, 1:30 AM UTC (0 min)resolved
their latest update (Sep 28, 2026, 1:30 AM UTC): Between 11:45 and 15:00 (GMT+10) on 28 September, macOS hosted agent jobs could not start because of a misconfigured agent image update. This has been fixed and new jobs are running normally. Jobs from that window still waiting in the Scheduled state won't start on their own. Ple…
Delayed notificationsMinor incident
Sep 30, 2026, 1:03 AM UTC to Sep 30, 2026, 2:32 AM UTC (1h 29m)resolved
their latest update (Sep 30, 2026, 2:32 AM UTC): Outbound notification latency remains at expected levels. Some customers may have received duplicate notifications before the underlying error was resolved.
Issues with webhook ingestion, GraphQL queriesPartial outage
Sep 22, 2026, 8:07 PM UTC to Sep 22, 2026, 8:50 PM UTC (42 min)postmortem published
their latest update (Sep 28, 2026, 4:12 AM UTC): ## Service Impact On September 22, 2026, between 19:09 and 19:32 UTC, customers experienced failures ingesting webhooks and executing GraphQL queries. Some web application requests also failed or timed out. During this period, 2.0% of requests to our webhook ingestion endpoints…
AWS us-east-1 outageAll systems operational
Sep 21, 2026, 11:47 PM UTC to Sep 22, 2026, 12:32 AM UTC (45 min)resolved
their latest update (Sep 22, 2026, 12:32 AM UTC): We did not experience any customer impact during this AWS us-east-1 outage.
Increased latency and error ratesMinor incident
Sep 21, 2026, 10:35 PM UTC to Sep 21, 2026, 11:46 PM UTC (1h 10m)resolved
their latest update (Sep 21, 2026, 11:46 PM UTC): This incident has been resolved.
Buildkite service disruptionPartial outage
Sep 9, 2026, 7:07 PM UTC to Sep 10, 2026, 1:54 AM UTC (6h 47m)postmortem published
their latest update (Sep 11, 2026, 6:03 AM UTC): ## Service Impact _All times UTC unless stated otherwise._ Customers experienced elevated errors and latency across the Buildkite web interface, REST API, Agent API, and job queue during two periods: 18:43:00–19:21:00 and 20:02:00–20:28:00 on September 9, 2026. During these pe…
Hosted Agents - Increased latency and error ratesMinor incident
Sep 4, 2026, 1:42 AM UTC to Sep 4, 2026, 2:39 AM UTC (57 min)resolved
their latest update (Sep 4, 2026, 2:39 AM UTC): Jobs running on Hosted Agents are now being dispatched promptly.
Increased latency and error ratesOngoing, all systems operational
Sep 4, 2026, 1:40 AM UTC, open for 31d 20h so farinvestigating
their latest update (Sep 4, 2026, 1:40 AM UTC): We're seeing increased latency and error rates for a subset of our customers. We're currently investigating and will provide status updates as they become available.
Scheduling delay for hosted agentsMinor incident
Sep 3, 2026, 6:00 AM UTC to Sep 3, 2026, 7:06 AM UTC (1h 6m)resolved
their latest update (Sep 3, 2026, 7:06 AM UTC): Jobs running on Hosted Agents are now being dispatched promptly.

Showing the 10 most recent of 66 incidents Buildkite has declared in the history we hold.

These entries are Buildkite's own declarations, taken from their public status feed, shown separately from the outages we detected ourselves. Their page publishes what they choose to publish: an incident missing here means they did not declare one, not that nothing happened, and an incident here is their account, not our measurement. Neither record ever changes the other.

The scorecard

How Buildkite's status page compared with what we measured, for every outage above that falls inside the window we have been capturing their claims.

We started recording Buildkite's own status page on August 22, 2026, 44 days ago. This comparison covers that period only, we do not reconstruct what they said before it, and we compare only inside outages we measured ourselves.

We have not measured an outage for Buildkite since we started recording their status page, so there is nothing to compare. That is a short measurement window, not a track record.

Buildkite decides what their status page covers, and it may report per component while our check reaches one surface from ten regions. We state what each side measured and leave the conclusion to you. If Buildkite believes a figure here is wrong, we publish corrections as prominently as the original.

Full detail on what a probe does and does not prove is in the methodology page.