vioscaleAI
Comparison

Fission vs Modal

No clear leader: Modal (56.4) and Fission (53.5) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Fission full profile →Modal full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Fission54
Modal56
Score
vioscaleAI score
Fission54 / 100medium · 54%
Modal56 / 100medium · 72%
Pricing
Free tier
Fission✓
Modal✓
Model
Price level
Fissionfree
Modalhigh
Starting price
Fission–
Modal$250
Transparent
Fission✓
Modal✓
Integrations
Count
Fission6
Modal2
Security
Certifications
Fission–
ModalSOC 2 Type II
Disclosure policy
Fission–
Modal✓
Hipaa
Fission–
Modal✓
Scorecard
Fission7.7
Modal–
Soc2
Fission–
Modal✓
Trust center
Vulnerabilities
Reliability
Status page
Fission–
Modal✓
Adoption
Dependent repos
Fission3
Modal–
Github stars
Fission8,933
Modal–
Activity
Commits last 30d
Fission60
Modal–
Release
Cadence days
Fission24
Modal–
History
Fission20 items
Modal–
License
Spdx
FissionApache-2.0
Modal–
Language
Primary
FissionGo
Modal–
Market
Availability
Content
Faq
Fission6 items
Modal7 items

Capabilities

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

Core
Execution substrate
FissionContainer
ModalContainer
Language / runtime breadth
FissionPython, NodeJS, Go, Rust, C#, PHP (extensible to any language)
ModalPython
Reach
Runs at global edge PoPs
Fission✗
Modal✓
Scale
Scale to zero
Fission✓
Modal✓
Performance
Cold-start profile
FissionProvisioned concurrency
ModalLow
Limits
Max execution duration
Fission-
Modal-
Integration
Event source breadth
FissionHTTP and event triggers
ModalHTTP, cron/scheduled, events
HTTP endpoint trigger
Fission✓
Modal✓
Cron / scheduled invocations
Fission✓
Modal✓
State
Durable state / workflow primitive
Fission-
Modal✓
Flexibility
Bring-your-own runtime / container
Fission✓
Modal✓
Deployment
Hosting
FissionCloud + self-hosted
ModalCloud only
Ops
Built-in logs / metrics / tracing
Fission✓
Modal✓
Extensibility
CLI + IaC / framework support
Fission✓
Modal✓

What each one is

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

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

Modal

A cloud platform that automatically scales applications based on demand and charges only for actual compute consumed, measured per CPU cycle. Provides direct GPU access for AI inference and training, with support for Python, JavaScript/TypeScript, and Go.

Independently observed

Pricing

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

Fission

Open sourceFree tier

Free, open source under Apache License

as of verify ↗

Modal

from $250/moUsage-basedFree tier

Free tier with $30/month compute. Pay-per-second metering: CPUs from $0.0000131/core/sec, GPUs from $0.000164/sec (T4) to $0.001972/sec (B300), memory at $0.00000222/GiB/sec.

  • StarterFree
    • 3 workspace seats
    • 100 containers
    • 10 GPU concurrency
    • Limited scheduled and web functions
    • Real-time metrics and logs
    • +1 more
  • Team$250/month base + compute usage ($100/month free credits)
    • Unlimited workspace seats
    • 5000 containers
    • 50 GPU concurrency
    • Unlimited scheduled functions
    • Custom domains
    • +3 more
  • EnterpriseContact sales
    • Volume-based discounts
    • Embedded ML engineering services
    • Private Slack support
    • Audit logs
    • SAML SSO
    • +1 more
as of verify ↗

Platform & deployment

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

Platforms
Web
Fission✗
Modal✓
CLI
Fission✓
Modal✓
Deployment
Cloud / SaaS
Fission✗
Modal✓
Self-hosted
Fission✓
Modal✗

Integrations

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

Fission

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

Modal

4 total
  • AWS Marketplace
  • GCP Marketplace
  • Datadog
  • Sentry.io
Independently observed
Still deciding?

Fission or Modal: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

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