compare
Prometheus vs Thanos
The same facts for both, read from GitHub every night, and the relation a person reviewed.
| Fact | Prometheus | Thanos |
|---|---|---|
| Language | Go | Go |
| Licence | Apache-2.0 | Apache-2.0 |
| Stars | 66k | 14k |
| Latest | v3.15.0 | v0.42.4 |
| Last push | 2026-10-06 | 2026-10-06 |
| Release cadence | about 13 days between releases | about 5 days between releases |
| Active contributors | 74+ commit authors on the default branch in the last 90 days | 30 commit authors on the default branch in the last 90 days |
| Flags | none | none |
How they relate
Thanos replaces Prometheus. Alternatives to Prometheus →
PartialAdds long-term storage in object storage and a global query view on top of Prometheus.
Both replace Datadog. Alternatives to Datadog →
PartialPrometheusMetrics and alerting you run yourself; logs and traces need other tools.
PartialThanosLong-term metrics storage only.
Prometheus
- v3.13.42026-10-023.13.4 / 2026-09-29
- v3.15.02026-09-253.15.0 / 2026-09-24
- v3.15.0-rc.12026-09-223.15.0-rc.1 / 2026-09-21pre-release
- v3.15.0-rc.02026-09-143.15.0-rc.0 / 2026-09-09pre-release
- v3.13.32026-09-073.13.3 / 2026-09-07
Thanos
- v0.42.42026-07-30Had to do another version release due to broken base image SHAs. No changes.
- v0.42.32026-07-29Fixes a small bug - like before now Receive on shutdown creates a new block and uploads it.
- v0.42.22026-07-17Had to do another version release due to broken base image SHAs. No changes.
- v0.42.12026-07-16This change fixes a small issue regarding timeouts in the Shipper component in the Receiver - we've accidentally set th…
- v0.42.02026-07-08The biggest new things in this release are, I think, Receive component's improvements regarding tenant's lifecycle hand…
Prometheus
unsigned The latest release, v3.15.0, carries no signature GitHub could verify.
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Thanos
✓ signed The latest release, v0.42.4, carries a signature GitHub verified.
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