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Fission

A Kubernetes-native serverless platform for deploying functions that scales automatically with minimal cold-start latency

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Also known as
fission

What is Fission?

An open-source framework for building and deploying serverless functions on Kubernetes with automatic scaling. Supports multiple programming languages and can be triggered by HTTP requests, message queue events, and scheduled tasks.

Independently observed

Fission pricing

We don't have Fission's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.

Pricing as of verify at live pricing ↗Independently observed
Open sourceFree tier

Free, open source under Apache License

What Fission does

The capabilities that matter for serverless & edge platforms, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.

Core
Execution substrate
Container
Language / runtime breadth
Python, NodeJS, Go, Rust, C#, PHP (extensible to any language)
Reach
Runs at global edge PoPs
✗
Scale
Scale to zero
✓
Performance
Cold-start profile
Provisioned concurrency
Limits
Max execution duration
-
Integration
Event source breadth
HTTP and event triggers
HTTP endpoint trigger
✓
Cron / scheduled invocations
✓
State
Durable state / workflow primitive
-
Flexibility
Bring-your-own runtime / container
✓
Deployment
Hosting
Cloud + self-hosted
Ops
Built-in logs / metrics / tracing
✓
Extensibility
CLI + IaC / framework support
✓
Independently observed

Platform & deployment

Independently observed
Platforms
  • CLI
Deployment
  • On-premise
  • Self-hosted

Integrations (6)

Independently observed
  • Kubernetes
  • Istio
  • Fluentd
  • Prometheus
  • Grafana
  • MCP

Security & compliance

Known vulnerabilities: 18 (18 in the last 12 months), max severity CRITICAL sourcea count reflects scale & disclosure, not quality

Fission FAQ

Common questions about Fission, answered from independent, dated evidence.

What is Fission?

Developers write short-lived functions that are triggered by HTTP requests or events, while the framework handles Kubernetes infrastructure management automatically. This eliminates the need to manually build containers or manage registries. It is indexed under Serverless & Edge Platforms.

Source: https://fission.io

Is Fission free to use?

Fission is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.

Source: https://fission.io

What platforms does Fission support?

Fission supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.

Source: https://fission.io

Can Fission be self-hosted?

Yes. Fission can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.

Source: https://fission.io

What does Fission integrate with?

We have confirmed 6 integrations for Fission, including Kubernetes, Istio, Fluentd, Prometheus, Grafana and MCP. This is what we could verify from public sources, so the vendor may support others we have not indexed.

Source: https://fission.io

Is Fission open source?

Yes. Fission is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.

Source: https://github.com/fission/fission

Fission alternatives

Other serverless & edge platforms we track, ranked by the same independent score.

All Fission alternatives, ranked →

Compare Fission

Side by side against other serverless & edge platforms, attribute by attribute, with a source on every value.

Independent · unbought · dated

The vioscaleAI score: one lens on the evidence

Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Fission, not the verdict.

Balanced composite 53 / 100
medium · 54%
Signal contributions to the composite score
SignalScoreWeightContributionEvidence
Development activity560.095.3✓
Capabilities810.065.1✓
Release cadence870.054.5✓
Security score760.043.2✓
Stars750.031.9✓
Integrations240.071.8✓
Dependent projects100.060.6✓
Security posture00.120.0-
Package downloads00.140.0-
Developer Q&A activity00.060.0-

Computed . Re-weight it by intent, or see the full method.

All data & sourcesshow ↓

Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.

Activity

AttributeValueEvidence
Commits last 30d60mediumsource · 2026-08-26 · 65%

Adoption

AttributeValueEvidence
Dependent repos3highsource · 2026-08-26 · 85%
Github stars8,915highsource · 2026-09-10 · 90%

Content

AttributeValueEvidence
Faq6 itemsmediumsource · 2026-09-10 · 66%

Features

AttributeValueEvidence
CapabilitiesHosting: both · Triggers: HTTP and event triggers · Languages: Python, NodeJS, Go, Rust, C#, PHP (extensible to any language) · Cold start: provisioned · Cli and iac: Yes · Http trigger: Yesmediumsource · 2026-09-14 · 60%

Integrations

AttributeValueEvidence
Count6mediumsource · 2026-08-14 · 60%

Language

AttributeValueEvidence
PrimaryGohighsource · 2026-09-10 · 90%

License

AttributeValueEvidence
SpdxApache-2.0highsource · 2026-09-10 · 95%

Pricing

AttributeValueEvidence
Free tierYesmediumsource · 2026-09-14 · 60%
Modelopen_sourcemediumsource · 2026-09-14 · 60%
Price levelfreemediumsource · 2026-09-14 · 60%
TransparentYesmediumsource · 2026-08-14 · 60%

Release

AttributeValueEvidence
Cadence days24mediumsource · 2026-09-10 · 70%
History20 itemsmediumsource · 2026-09-10 · 70%

Security

AttributeValueEvidence
Scorecard7.6highsource · 2026-09-10 · 90%
VulnerabilitiesCount: 18 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffission%2Ffission&per_page=100 · Last 12m: 18 · Max severity: CRITICALhighsource · 2026-08-26 · 90%
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