Google Cloud Functions vs OpenFaaS: Which is Better in 2026?
Choosing between Google Cloud Functions and OpenFaaS comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Google Cloud Functions is our overall pick for cloud & infrastructure workflows. Pick OpenFaaS if you need a fully free option.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Google Cloud Functions
Serverless compute on Google Cloud
Best for you if:
- • Google Cloud Functions is a serverless execution environment for event-driven code
- • It runs backend code in response to events without managing servers or containers
OpenFaaS
Serverless functions on Kubernetes
Best for you if:
- • You need something completely free
- • OpenFaaS is an open-source serverless framework for Docker and Kubernetes
- • It deploys functions as containers with auto-scaling and metrics
| At a Glance |  Google Cloud Functions |  OpenFaaS |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Cloud & Infrastructure | Cloud & Infrastructure |
Rating | 4.4/5 | - |
Free plan | Yes | Yes |
Choose Google Cloud Functions or OpenFaaS?
Choose Google Cloud Functions if
Serverless compute on Google Cloud
- Serverless functions
- Good for event-driven
- Pay per invocation
Choose OpenFaaS if
Serverless functions on Kubernetes
- Open source serverless
- Kubernetes native
- Self-hostable
- You want a fully free tool (Google Cloud Functions requires payment)
| Feature | Google Cloud Functions | OpenFaaS |
|---|---|---|
| Pricing Model | Freemium | Free |
| User Rating | ★4.4/5 81 reviews | No ratings yet |
| Categories | Cloud & InfrastructureServerless | Cloud & InfrastructureHosting & Deployment |
In-Depth Analysis
Google Cloud Functions
Serverless compute on Google Cloud
Strengths
- +Serverless functions
- +Good for event-driven
- +Pay per invocation
- +Easy deployment
- +Good logging
Weaknesses
- -Cold starts
- -Execution limits
- -Less features than Lambda
- -Vendor lock-in
- -Debugging limited
Key features
OpenFaaS
Serverless functions on Kubernetes
Strengths
- +Open source serverless
- +Kubernetes native
- +Self-hostable
- +Good community
- +Language agnostic
Weaknesses
- -Learning curve
- -Setup complexity
- -Enterprise features paid
- -Documentation gaps
- -Operational overhead
Key features
Pricing: Google Cloud Functions vs OpenFaaS
| Plan | Google Cloud Functions | OpenFaaS |
|---|---|---|
| Tier 1 | Free Free Tier | Free Community Edition |
| Tier 2 | Usage-based Pay-as-you-go | Custom OpenFaaS Pro |
Pricing verified from each vendor's public pricing page. Compare in detail on Google Cloud Functions pricing and OpenFaaS pricing.
Who Should Use What?
On a budget?
OpenFaaS is free. Google Cloud Functions is freemium.
Go with: OpenFaaS
Want the highest-rated option?
Google Cloud Functions is rated 4.4/5. OpenFaaS has no ratings yet.
Go with: Google Cloud Functions
Value user reviews?
Google Cloud Functions: 81 reviews (4.4/5). OpenFaaS: no ratings yet.
Go with: Google Cloud Functions
3 Questions to Help You Decide
What's your budget?
Google Cloud Functions is freemium. OpenFaaS is free. Go with OpenFaaS if free matters most.
What's your use case?
Both are cloud & infrastructure tools. Compare their specific features to decide.
How important are ratings?
Google Cloud Functions is rated 4.4/5; OpenFaaS has no ratings yet.
Key Takeaways
Google Cloud Functions
- Free tier available
- Our pick for this comparison
OpenFaaS
- Completely free
The Bottom Line
Google Cloud Functions is our pick. That said, OpenFaaS is free, hard to beat on price.
Frequently Asked Questions
Is Google Cloud Functions or OpenFaaS better?
Google Cloud Functions is rated in our evaluation. Google Cloud Functions is freemium and OpenFaaS is free.
What are Google Cloud Functions and OpenFaaS used for?
Google Cloud Functions: Serverless compute on Google Cloud. OpenFaaS: Serverless functions on Kubernetes.
What does Google Cloud Functions cost vs OpenFaaS?
Google Cloud Functions is freemium (free tier + paid plans). OpenFaaS is completely free. Visit their websites for detailed pricing.