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Comparison · Infra & APIs

Fission vs Hatchet

A side-by-side editorial comparison of Fission and Hatchet — release velocity, themes, recent moves, and the top alternatives to consider.

Fission vs Hatchet: at a glance

FeatureFissionHatchet
SectorInfra & APIsInfra & APIs
Velocity score0.06.3
Sparks · 30d00
Top themesserverless, kubernetes, faas, release-candidatesdurable-execution, reliability, sdks, sandboxes
Last editorial update3mo ago14h ago
WebsiteVisit →Visit →

What is Fission?

Fission's release feed carries only RC tags, and none of them say what shipped

Every entry here is a release candidate — v1.22.0-rc1 and rc2, v1.23.0-rc1, v1.25.0-rc1 — with no final release appearing between them, and the version sequence skips 1.24 entirely. The bodies are whatever the tagging commit said, so what reaches this feed is a dependabot bump, a CLI tool-version refresh, a codegen sync explicitly labelled as having no functional change, and one entry that is nothing but links to an external release-highlights page. The actual release notes live on the project's documentation site, not here.

Read the full Fission trajectory →

What is Hatchet?

Hatchet chases DAG crash loops through three engine patches in a day.

Hatchet added sandboxes, Labs switches and cloud MFA in early November. The week since has been engine reliability: v0.120.3 batches DAG step triggers, v0.120.4 fixes stranded match rows and prunes database partitions before locking, and v0.120.5 removes another cause of DAG crash loops. Python SDK 1.46.0 makes it easier to unit-test tasks and passes failures to cleanup dependencies.

Read the full Hatchet trajectory →

Fission vs Hatchet: editorial side-by-side

F
Fission
INFRA · APIS
0.0

Fission's release feed carries only RC tags, and none of them say what shipped

◆ Current state

Every entry here is a release candidate — v1.22.0-rc1 and rc2, v1.23.0-rc1, v1.25.0-rc1 — with no final release appearing between them, and the version sequence skips 1.24 entirely. The bodies are whatever the tagging commit said, so what reaches this feed is a dependabot bump, a CLI tool-version refresh, a codegen sync explicitly labelled as having no functional change, and one entry that is nothing but links to an external release-highlights page. The actual release notes live on the project's documentation site, not here.

◆ Where it's heading

What can be read from these tags is infrastructure maintenance rather than product direction: Go dependency updates, helm and kind and skaffold and cosign version refreshes, and regenerated swagger and applyconfiguration files kept in sync with CEL and webhook validation comments in the core API types. That last one is the only entry hinting at anything structural — CEL-based validation on the API types implies declarative validation moving into the CRDs — but the commit itself changes only generated output.

◆ Prediction

This feed does not carry enough to predict product direction; until final releases or their notes appear here rather than only candidate tags, any read of where Fission is heading would be guesswork.

H
Hatchet
INFRA · APIS
6.3

Hatchet chases DAG crash loops through three engine patches in a day.

◆ Current state

Hatchet added sandboxes, Labs switches and cloud MFA in early November. The week since has been engine reliability: v0.120.3 batches DAG step triggers, v0.120.4 fixes stranded match rows and prunes database partitions before locking, and v0.120.5 removes another cause of DAG crash loops. Python SDK 1.46.0 makes it easier to unit-test tasks and passes failures to cleanup dependencies.

◆ Where it's heading

After a burst of features, Hatchet is tuning the engine under load: fewer locks, batched triggers and crash-loop fixes. The SDKs are getting testing and correctness work to match.

◆ Prediction

Expect more v0.120.x patches on DAG handling, then a sandbox package out of release candidate.

Alternatives to Fission and Hatchet

Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Fission or Hatchet.

See all Fission alternatives → · See all Hatchet alternatives →

Recent activity from Fission and Hatchet

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 16h agoHatchetHatchet v0.120.5 fixes another DAG crash loop
  2. 16h agoHatchetPython SDK 1.46.0
  3. 19h agoHatchetHatchet v0.120.4 fixes stranded match rows
  4. 21h agoHatchetv0.120.4 alpha prunes partitions before locking
  5. 1d agoHatchetHatchet sandbox package 0.1.5 release candidate
  6. 1d agoHatchetHatchet v0.120.3 batches DAG step triggers
  7. 5mo agoFissionFission 1.25.0-rc1 tag carries only regenerated codegen output
  8. 6mo agoFissionFission 1.23.0-rc1 tag carries a CI tool-version refresh
  9. 11mo agoFissionv1.22.0-rc2
  10. 1y agoFissionFission 1.22.0-rc1 tag carries a golang.org/x/net bump

Frequently asked questions

What is the difference between Fission and Hatchet?

They serve adjacent needs but don't currently overlap on shipped themes. Hatchet is currently shipping more aggressively (velocity 6.3 vs 0.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is Fission better than Hatchet?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Hatchet is currently shipping more aggressively (velocity 6.3 vs 0.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to Fission?

Top Fission alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Fission alternatives" section above for the current picks, or visit /alternatives/fission for the full list with editorial commentary on each.

What are the best alternatives to Hatchet?

Top Hatchet alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Hatchet alternatives" section above for the current picks, or visit /alternatives/hatchet for the full list with editorial commentary on each.