vioscaleAI
Comparison

AWS Lambda vs Fission

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 →Fission full profile →
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★AWS Lambda76
Fission54
Score
vioscaleAI score
AWS Lambda76 / 100medium · 72%
Fission54 / 100medium · 54%
Pricing
Free tier
AWS Lambda✓
Fission✓
Model
AWS Lambdacommercial
Fissionopen_source
Price level
AWS Lambdalow
Fissionfree
Starting price
AWS Lambda$1
Fission–
Transparent
AWS Lambda✓
Fission✓
Integrations
Count
AWS Lambda220
Fission6
Security
Disclosure policy
AWS Lambda✓
Fission–
Fedramp
AWS Lambda✓
Fission–
Gdpr
AWS Lambda✓
Fission–
Hipaa
AWS Lambda✓
Fission–
Iso27001
AWS Lambda✓
Fission–
Pci
AWS Lambda✓
Fission–
Scorecard
AWS Lambda–
Fission7.7
Soc2
AWS Lambda✓
Fission–
Trust center
Vulnerabilities
Reliability
Status page
AWS Lambda✓
Fission–
Adoption
Dependent repos
AWS Lambda–
Fission3
Github stars
AWS Lambda–
Fission8,933
Activity
Commits last 30d
AWS Lambda–
Fission60
Release
Cadence days
AWS Lambda–
Fission24
History
AWS Lambda–
Fission20 items
License
Spdx
AWS Lambda–
FissionApache-2.0
Language
Primary
AWS Lambda–
FissionGo
Market
Availability
AWS LambdaAvailable worldwide
Fission–
Content
Faq
AWS Lambda7 items
Fission6 items

Capabilities

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

Core
Execution substrate
AWS LambdaMicroVM
FissionContainer
Language / runtime breadth
AWS LambdaPython, Node.js, Java, C#, Go, Ruby, custom runtimes
FissionPython, NodeJS, Go, Rust, C#, PHP (extensible to any language)
Reach
Runs at global edge PoPs
AWS Lambda-
Fission✗
Scale
Scale to zero
AWS Lambda✓
Fission✓
Performance
Cold-start profile
AWS LambdaProvisioned concurrency
FissionProvisioned concurrency
Limits
Max execution duration
AWS Lambda-
Fission-
Integration
Event source breadth
AWS Lambda220+ AWS services including S3, DynamoDB, Kinesis, SQS, API calls, event streams
FissionHTTP and event triggers
HTTP endpoint trigger
AWS Lambda✓
Fission✓
Cron / scheduled invocations
AWS Lambda-
Fission✓
State
Durable state / workflow primitive
AWS Lambda✓
Fission-
Flexibility
Bring-your-own runtime / container
AWS Lambda✓
Fission✓
Deployment
Hosting
AWS LambdaCloud only
FissionCloud + self-hosted
Ops
Built-in logs / metrics / tracing
AWS Lambda✓
Fission✓
Extensibility
CLI + IaC / framework support
AWS Lambda✓
Fission✓

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

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

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 ↗

Fission

Open sourceFree tier

Free, open source under Apache License

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✓
Fission✗
CLI
AWS Lambda✓
Fission✓
Deployment
Cloud / SaaS
AWS Lambda✓
Fission✗
Self-hosted
AWS Lambda✗
Fission✓

Integrations

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

AWS Lambda

Leader
17 total
  • AWS S3
  • AWS DynamoDB
  • AWS Kinesis
  • AWS SQS
  • AWS EventBridge
  • Amazon MSK
  • AWS CloudWatch
  • AWS X-Ray
  • Amazon S3
  • Amazon DynamoDB
  • Amazon Kinesis
  • Apache Kafka
  • Amazon SQS
  • Amazon DynamoDB Streams
  • S3
  • SharePoint
  • Confluence
Independently observed

Fission

6 total
  • Kubernetes
  • Istio
  • Fluentd
  • Prometheus
  • Grafana
  • MCP
Independently observed
Still deciding?

AWS Lambda or Fission: 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.