Comparison

Cloudflare Workers vs Fission

On the evidence we track, Cloudflare Workers leads this comparison with a composite score of 91/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Cloudflare Workers full profile →Fission full profile →

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★Cloudflare Workers91

Fission54

Attribute comparison across 2 tools
Attribute	Cloudflare WorkersLeader	Fission
Vioscale score	91 / 100medium · 63%	54 / 100medium · 54%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	open_source
Price levelpricing.price_level	mid	free
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	-	6
Security
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	✓	-
Iso27001security.iso27001	✓	-
Pcisecurity.pci	✓	-
Scorecardsecurity.scorecard	-	7.7
Soc2security.soc2	✓	-
Vulnerabilitiessecurity.vulnerabilities	-	Count: 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: CRITICAL
Reliability
Sla pctreliability.sla_pct	100	-
Status pagereliability.status_page	✓	-
Adoption
Dependent reposadoption.dependent_repos	-	3
Github starsadoption.github_stars	-	8,913
Activity
Commits last 30dactivity.commits_last_30d	-	60
Release
Cadence daysrelease.cadence_days	-	24
Historyrelease.history	-	20 items
License
Spdxlicense.spdx	-	Apache-2.0
Language
Primarylanguage.primary	-	Go
Market
Availabilitymarket.availability	Available worldwide · HQ US	-

Score

Vioscale score

Cloudflare Workers91 / 100medium · 63%

Fission54 / 100medium · 54%

Pricing

Free tier

Cloudflare Workers✓

Fission✓

Model

Cloudflare Workersfreemium

Fissionopen_source

Price level

Cloudflare Workersmid

Fissionfree

Transparent

Cloudflare Workers✓

Fission✓

Integrations

Count

Cloudflare Workers–

Fission6

Security

Disclosure policy

Cloudflare Workers✓

Fission–

Gdpr

Cloudflare Workers✓

Fission–

Iso27001

Cloudflare Workers✓

Fission–

Pci

Cloudflare Workers✓

Fission–

Scorecard

Cloudflare Workers–

Fission7.7

Soc2

Cloudflare Workers✓

Fission–

Vulnerabilities

Cloudflare Workers–

FissionCount: 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: CRITICAL

Reliability

Sla pct

Cloudflare Workers100

Fission–

Status page

Cloudflare Workers✓

Fission–

Adoption

Dependent repos

Cloudflare Workers–

Fission3

Github stars

Cloudflare Workers–

Fission8,913

Activity

Commits last 30d

Cloudflare Workers–

Fission60

Release

Cadence days

Cloudflare Workers–

Fission24

History

Cloudflare Workers–

Fission20 items

License

Spdx

Cloudflare Workers–

FissionApache-2.0

Language

Primary

Cloudflare Workers–

FissionGo

Market

Availability

Cloudflare WorkersAvailable worldwide · HQ US

Fission–

Capabilities

Feature-by-feature on the axes that matter for serverless & edge platforms. “-” means undocumented, not absent.

Capability comparison for Serverless & Edge Platforms
Capability	Cloudflare Workers	Fission
Core
Execution substrate	V8 isolate	Container
Language / runtime breadth	JavaScript, TypeScript, Python, Rust	Python, NodeJS, Go, Rust, C#, PHP (extensible to any language)
Reach
Runs at global edge PoPs	✓	✗
Scale
Scale to zero	✓	✓
Performance
Cold-start profile	None (isolate)	Provisioned concurrency
Limits
Max execution duration	-	-
Integration
Event source breadth	HTTP requests, cron schedules, webhooks, message queues	HTTP and event triggers
HTTP endpoint trigger	✓	✓
Cron / scheduled invocations	✓	-
State
Durable state / workflow primitive	✓	-
Flexibility
Bring-your-own runtime / container	✓	✓
Deployment
Hosting	Cloud only	Cloud + self-hosted
Ops
Built-in logs / metrics / tracing	-	✓
Extensibility
CLI + IaC / framework support	✓	✓

Core

Execution substrate

Cloudflare WorkersV8 isolate

FissionContainer

Language / runtime breadth

Cloudflare WorkersJavaScript, TypeScript, Python, Rust

FissionPython, NodeJS, Go, Rust, C#, PHP (extensible to any language)

Reach

Runs at global edge PoPs

Cloudflare Workers✓

Fission✗

Scale

Scale to zero

Cloudflare Workers✓

Fission✓

Performance

Cold-start profile

Cloudflare WorkersNone (isolate)

FissionProvisioned concurrency

Limits

Max execution duration

Cloudflare Workers-

Fission-

Integration

Event source breadth

Cloudflare WorkersHTTP requests, cron schedules, webhooks, message queues

FissionHTTP and event triggers

HTTP endpoint trigger

Cloudflare Workers✓

Fission✓

Cron / scheduled invocations

Cloudflare Workers✓

Fission-

State

Durable state / workflow primitive

Cloudflare Workers✓

Fission-

Flexibility

Bring-your-own runtime / container

Cloudflare Workers✓

Fission✓

Deployment

Hosting

Cloudflare WorkersCloud only

FissionCloud + self-hosted

Ops

Built-in logs / metrics / tracing

Cloudflare Workers-

Fission✓

Extensibility

CLI + IaC / framework support

Cloudflare Workers✓

Fission✓

What each one is

The product in its own terms, so the numbers below have context.

Cloudflare Workers

Leader

A serverless platform enabling developers to deploy applications and scripts that run across Cloudflare's global infrastructure, scaling automatically from zero requests to millions, with billing based on actual execution time rather than reserved capacity.

Independently observed

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.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Cloudflare Workers

Leader

from $20/moHybridFree tier

Free tier with per-request and per-CPU metering. General Cloudflare plans from free to $250/mo; Workers add-on services metered separately.

FreeFree
- DNS
- DDoS Protection
- CDN
- Universal SSL
- WAF
- +3 more
Pro$20/mo billed annually or $25/mo billed monthly
- Fast DNS
- Unmetered DDoS Protection
- CDN
- Universal SSL Certificate
- Free Managed Ruleset
- +7 more
Business$200/mo billed annually or $250/mo billed monthly
- Fast DNS
- Unmetered DDoS Protection
- CDN
- Universal SSL Certificate
- Free Managed Ruleset
- +8 more
ContractContact sales

as of 2026-08-14verify ↗

Fission

Open sourceFree tier

Free, open source under Apache License

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Cloudflare Workers	Fission
WebPlatforms	✓	✗
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✗	✓
On-premiseDeployment	✗	✓

Platforms

Web

Cloudflare Workers✓

Fission✗

CLI

Cloudflare Workers✓

Fission✓

Deployment

Cloud / SaaS

Cloudflare Workers✓

Fission✓

Self-hosted

Cloudflare Workers✗

Fission✓

On-premise

Cloudflare Workers✗

Fission✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Cloudflare Workers

Leader

Not documented yet.

Fission

6 total

Kubernetes
Istio
Fluentd
Prometheus
Grafana
MCP

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.