vioscaleAI
Comparison

AWS Lambda vs OpenFaaS

On the evidence we track, AWS Lambda leads this comparison with a composite score of 76/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

AWS Lambda full profile →OpenFaaS full profile →
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★AWS Lambda76
OpenFaaS42
Score
vioscaleAI score
AWS Lambda76 / 100medium · 72%
OpenFaaS42 / 100low · 42%
Pricing
Free tier
AWS Lambda✓
OpenFaaS✓
Model
AWS Lambdacommercial
OpenFaaSfreemium
Price level
AWS Lambdalow
OpenFaaSlow
Starting price
AWS Lambda$1
OpenFaaS–
Transparent
AWS Lambda✓
OpenFaaS✗
Integrations
Count
AWS Lambda220
OpenFaaS12
Security
Disclosure policy
AWS Lambda✓
OpenFaaS–
Fedramp
AWS Lambda✓
OpenFaaS–
Gdpr
AWS Lambda✓
OpenFaaS–
Hipaa
AWS Lambda✓
OpenFaaS–
Iso27001
AWS Lambda✓
OpenFaaS–
Pci
AWS Lambda✓
OpenFaaS–
Scorecard
AWS Lambda–
OpenFaaS4.2
Soc2
AWS Lambda✓
OpenFaaS–
Trust center
Vulnerabilities
Reliability
Status page
AWS Lambda✓
OpenFaaS–
Adoption
Dependent repos
AWS Lambda–
OpenFaaS55
Github stars
AWS Lambda–
OpenFaaS26,249
Activity
Commits last 30d
AWS Lambda–
OpenFaaS0
Release
Cadence days
AWS Lambda–
OpenFaaS136
History
AWS Lambda–
OpenFaaS5 items
Language
Primary
AWS Lambda–
OpenFaaSGo
Market
Availability
Content
Faq
AWS Lambda7 items
OpenFaaS6 items

Capabilities

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

Core
Execution substrate
AWS LambdaMicroVM
OpenFaaSContainer
Language / runtime breadth
AWS LambdaPython, Node.js, Java, C#, Go, Ruby, custom runtimes
OpenFaaSextensive language support
Reach
Runs at global edge PoPs
AWS Lambda-
OpenFaaS-
Scale
Scale to zero
AWS Lambda✓
OpenFaaS✓
Performance
Cold-start profile
AWS LambdaProvisioned concurrency
OpenFaaS-
Limits
Max execution duration
AWS Lambda-
OpenFaaSextended execution timeouts
Integration
Event source breadth
AWS Lambda220+ AWS services including S3, DynamoDB, Kinesis, SQS, API calls, event streams
OpenFaaSHTTP, Cron, Kafka, RabbitMQ, GCP Pub/Sub, PostgreSQL, AWS SNS/SQS
HTTP endpoint trigger
AWS Lambda✓
OpenFaaS✓
Cron / scheduled invocations
AWS Lambda-
OpenFaaS✓
State
Durable state / workflow primitive
AWS Lambda✓
OpenFaaS-
Flexibility
Bring-your-own runtime / container
AWS Lambda✓
OpenFaaS✓
Deployment
Hosting
AWS LambdaCloud only
OpenFaaSCloud + self-hosted
Ops
Built-in logs / metrics / tracing
AWS Lambda✓
OpenFaaS✓
Extensibility
CLI + IaC / framework support
AWS Lambda✓
OpenFaaS✓

What each one is

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

AWS Lambda

Leader

AWS service providing serverless infrastructure for AI agents and language models, with integrated knowledge base capabilities for retrieval-augmented generation, automated data processing, and model fine-tuning.

Independently observed

OpenFaaS

A framework for deploying functions to Kubernetes with automatic scaling, event-driven triggers, multi-tenancy support, and enterprise features including SSO, RBAC, and direct engineering support.

Independently observed

Pricing

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

AWS Lambda

Leader
from $1/API callsUsage-based

Usage-based pricing per token and per API call; fine-tuning $0.005/image; knowledge base $0.010/page

  • Standard$1 per 1000 API calls
  • Flex-
  • Priority-
  • Reserved-
as of verify ↗

OpenFaaS

HybridFree tier14-day trial

Free community edition; subscription-based standard and enterprise tiers

  • Community EditionFree
    • Legacy UI portal
    • REST API
    • Basic metrics & observability
    • Cron trigger
  • Standard14-day trial available; custom pricing
    • Scale to zero
    • Kafka/RabbitMQ/GCP Pub/Sub/PostgreSQL/AWS SNS/SQS triggers
    • UI dashboard
    • Grafana dashboards
    • Kubernetes Custom Resources (CRD)
    • +4 more
  • EnterpriseContact sales
    • Enterprise support with SLA
    • Direct engineering support via Slack
    • Annual architecture review
    • Function Builder REST API
    • Identity and Access Management
    • +3 more
as of verify ↗

Platform & deployment

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

Platforms
Web
AWS Lambda✓
OpenFaaS✓
CLI
AWS Lambda✓
OpenFaaS✓
Deployment
Cloud / SaaS
AWS Lambda✓
OpenFaaS✓
Self-hosted
AWS Lambda✗
OpenFaaS✓
On-premise
AWS Lambda✗
OpenFaaS✓
Hybrid
AWS Lambda✗
OpenFaaS✓
Air-gapped
AWS Lambda✗
OpenFaaS✓

Integrations

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

In common (2)
  • AWS SQS
  • Apache Kafka

AWS Lambda

Leader
17 total - 15 not shared
  • AWS S3
  • AWS DynamoDB
  • AWS Kinesis
  • AWS EventBridge
  • Amazon MSK
  • AWS CloudWatch
  • AWS X-Ray
  • Amazon S3
  • Amazon DynamoDB
  • Amazon Kinesis
  • Amazon SQS
  • Amazon DynamoDB Streams
  • S3
  • SharePoint
  • Confluence
Independently observed

OpenFaaS

24 total - 22 not shared
  • AWS SNS
  • GCP Pub/Sub
  • RabbitMQ
  • PostgreSQL
  • MQTT
  • Cron
  • Grafana
  • Istio
  • Linkerd
  • NATS JetStream
  • GitHub
  • Slack
  • Salesforce
  • Zoom
  • Google Docs
  • Gmail
  • DigitalOcean
  • Crunchbase
  • Kafka
  • AWS SNS/SQS
  • Discord
  • Gumroad
Independently observed
Still deciding?

AWS Lambda or OpenFaaS: 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.