Compare the status, incidents stats and history between Heroku and Fly.io
Every service has different practices when updating its status page, so compare these stats with a grain of salt. E.g., one service can be more aggressive when updating its status page than other so that they will have more incidents, but it doesn't mean it is worse than the other.
Beginning at 23:17 UTC on September 24, 2025 and continuing until 00:39 UTC on September 25, 2025, impacted customers experienced elevated H99 errors on network runtime in US & EU. This issue i...
Heroku engineers are investigating a decline in successful API responses from the gpt-oss-120b AI model in US region.
The upstream DNS issue impacting Heroku has been resolved. Customers should no longer see errors, though some may continue to experience degraded performance as services stabilize. We are active...
We're investigating IPv6 connectivity issues on a small number of hosts in the SJC region. Machines on impacted hosts may see inbound/outbound connectivity issues over IPv6. IPv4 connections for th...
We're investigating reports of "unauthorized" errors when doing `fly deploy` operations using the `--depot=false` parameter. This is not enabled by default, and Depot builders are unaffected. If yo...
Our dashboard is experiencing intermittent 500 errors. All other services continue to work as normal.
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