OpenFaaS vs Google Cloud Functions: Which is Better in 2026?
Choosing between OpenFaaS and Google Cloud Functions 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:
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
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
| At a Glance |  OpenFaaS |  Google Cloud Functions |
|---|---|---|
Starts at | Custom/moOpenFaaS Pro | Usage-based/moPay-as-you-go |
Best For | Cloud & Infrastructure | Cloud & Infrastructure |
Rating | - | - |
Choose OpenFaaS or Google Cloud Functions?
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)
Choose Google Cloud Functions if
Serverless compute on Google Cloud
- Serverless functions
- Good for event-driven
- Pay per invocation
| Feature | OpenFaaS | Google Cloud Functions |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | No ratings yet | ★4.4/5 81 reviews |
| Categories | Cloud & InfrastructureHosting & Deployment | Cloud & InfrastructureServerless |
In-Depth Analysis
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
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
Pricing: OpenFaaS vs Google Cloud Functions
| Plan | OpenFaaS | Google Cloud Functions |
|---|---|---|
| Tier 1 | Free Community Edition | Free Free Tier |
| Tier 2 | Custom OpenFaaS Pro | Usage-based Pay-as-you-go |
Pricing verified from each vendor's public pricing page. Compare in detail on OpenFaaS pricing and Google Cloud Functions pricing.
Who Should Use What?
On a budget?
OpenFaaS is free. Google Cloud Functions is freemium.
Go with: OpenFaaS
Want the highest-rated option?
Neither has user reviews yet.
Go with: OpenFaaS
Value user reviews?
Neither has user reviews yet.
Go with: Google Cloud Functions
3 Questions to Help You Decide
What's your budget?
OpenFaaS is free. Google Cloud Functions is freemium. 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?
Neither has user reviews 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 OpenFaaS or Google Cloud Functions better?
Google Cloud Functions is rated in our evaluation. OpenFaaS is free and Google Cloud Functions is freemium.
What are OpenFaaS and Google Cloud Functions used for?
OpenFaaS: Serverless functions on Kubernetes. Google Cloud Functions: Serverless compute on Google Cloud.
What does OpenFaaS cost vs Google Cloud Functions?
OpenFaaS is completely free. Google Cloud Functions is freemium (free tier + paid plans). Visit their websites for detailed pricing.