Is Modal or Vellum better?

Neither clearly leads. Modal starts at Free and Vellum at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Modal or Vellum?

Modal starts at Free and Vellum at Free.

Does Modal or Vellum run on more platforms?

Modal runs on Cloud, Api. Vellum runs on Web, macOS, iOS, Slack, Telegram, Terminal.

Can I use Modal for free?

Both have a free tier, so you can try either at no cost before committing.

What is Modal best used for?

Modal is most often used for running serverless gpu workloads for model inference and training, executing python functions on cloud compute without managing servers. Of those, running serverless gpu workloads for model inference and training and executing python functions on cloud compute without managing servers are not what Vellum is typically brought in for.

What can Modal do that Vellum cannot?

Modal covers Serverless GPUs, Python functions, Auto-scaling, Fast cold starts. Vellum covers Persistent AI identity, Long-term memory, Email automation, Calendar management.

AI · head to head

Modal vs Vellum

Modal

Cloud functions for AI and ML

From: Free
Rated: -

Full review Website

Vellum

Personalized AI assistant with persistent memory and autonomous action-taking

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Modal the Team plan carries a $250 monthly base fee and returns only $100 of that as free credits, so $150 is a flat charge before any compute; Vellum pricing varies significantly by computational tier, making budget planning difficult
They diverge on capability: Modal covers Serverless GPUs, Vellum covers Persistent AI identity.
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Modal and Vellum actually diverge.

Attributes where Modal and Vellum differ
Attribute	Modal	Vellum
Pricing model	usage-based	Freemium with paid plans and pay-as-you-go credits
Platforms	Cloud, Api	Web, macOS, iOS, Slack, Telegram, Terminal
Founded	2021	Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (AI).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Modal

Serverless GPUs
Python functions
Auto-scaling
Fast cold starts
Python SDK
GitHub Actions
Cloud storage
Cloud support

Only in Vellum

Persistent AI identity
Long-term memory
Email automation
Calendar management
Autonomous task execution
Multi-device synchronization
Custom plugins
Open-source deployment

What people use each for

The jobs each tool is most often brought in to do.

Modal

Running serverless GPU workloads for model inference and trainingnot Vellum
Executing Python functions on cloud compute without managing serversnot Vellum

Vellum

Personal productivity automation across email and calendarnot Modal
CRM updates and pipeline managementnot Modal
Expense report generation and managementnot Modal
Document drafting and content creationnot Modal
Meeting scheduling and calendar coordinationnot Modal

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Modal

The Team plan carries a $250 monthly base fee and returns only $100 of that as free credits, so $150 is a flat charge before any compute
Compute is billed per second across separate GPU and CPU meters, so total cost depends on execution time rather than any fixed rate
The Starter plan's $30 monthly free credit is the only allowance below the paid base fee
Enterprise volume discounts are custom and unpublished

Vellum

Pricing varies significantly by computational tier, making budget planning difficult
Requires explicit permission for sensitive actions, limiting autonomy
Self-hosting option may intimidate non-technical users
Learning curve to develop customizations with plugins

Pricing, plan by plan

Modal

Free

StarterFree
- 3 seats
- 100 containers
- 10 GPU concurrency
Team$250/month
- Unlimited seats
- 5,000 containers
- 50 GPU concurrency
Enterprise$null/custom
- Custom seats, containers, and GPU concurrency

Vellum

Free

FreeFree
- Starter credits included
- Basic features
Mighty$30/month
- 1 vCPU, 2 GiB RAM
- 10 GB storage
- Included usage allowance
Super$100/month
- 2.5 vCPU, 5 GiB RAM
- 30 GB storage
- Assistant email and subdomain
Ultra$200/month
- 4 vCPU, 8 GiB RAM
- 60 GB storage
- Assistant email and subdomain

Which should you pick?

Choose Modal if

You need serverless gpus.
You want to start without paying.
You work on Cloud, Api.
You also want python functions.

Modal review

Choose Vellum if

You need persistent ai identity.
You want to start without paying.
You work on Web, macOS, iOS, Slack, Telegram, Terminal.
You also want long-term memory.

Vellum review

Questions people ask

Is Modal or Vellum better?: Neither clearly leads. Modal starts at Free and Vellum at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Modal or Vellum?: Modal starts at Free and Vellum at Free.
Does Modal or Vellum run on more platforms?: Modal runs on Cloud, Api. Vellum runs on Web, macOS, iOS, Slack, Telegram, Terminal.
Can I use Modal for free?: Both have a free tier, so you can try either at no cost before committing.
What is Modal best used for?: Modal is most often used for running serverless gpu workloads for model inference and training, executing python functions on cloud compute without managing servers. Of those, running serverless gpu workloads for model inference and training and executing python functions on cloud compute without managing servers are not what Vellum is typically brought in for.
What can Modal do that Vellum cannot?: Modal covers Serverless GPUs, Python functions, Auto-scaling, Fast cold starts. Vellum covers Persistent AI identity, Long-term memory, Email automation, Calendar management.

Answered from the vendors’ own pages

Modal: How much does Modal cost?

Modal uses pay-as-you-go pricing with Team plan at 250 USD/month base. Starter includes 30 USD/month free credits; Team includes 100 USD/month free credits. Compute charges per second for CPU cores, memory, and GPU instances.

Source

Vellum: How does Vellum protect my data privacy?

Vellum uses permission-based controls requiring explicit approval for sensitive actions. Data is encrypted and the option for self-hosting provides complete data control. Open-source deployment option allows hosting on your own infrastructure.

Source

Modal: Is there a free tier?

Yes, Starter plan is free plus 30 USD/month in compute credits included monthly for new users.

Source

Vellum: Can I use Vellum for business team collaboration?

Vellum is primarily designed as a personal assistant with persistent identity. For team collaboration, platforms like Lindy offer better multi-user features with shared credit pools and Slack workspace integration.

Source

Modal: What are the seat limits?

Starter plan includes 3 seats; Team plan provides unlimited seats; Enterprise tier has custom seat allocations.

Source

Vellum: What does the free tier include?

Vellum offers free starter credits to begin using the platform. Beyond that, it operates on a pay-as-you-go credit model with paid tiers starting at $30/month for increased computational resources and bundled credits.

Source

Modal vs Vellum

Modal

Vellum

The short version

Where they differ

What each one covers

Only in Modal

Only in Vellum

What people use each for

Modal

Vellum

Where each one falls short

Modal

Vellum

Pricing, plan by plan

Modal

Vellum

Which should you pick?

Choose Modal if

Choose Vellum if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Modal

More on Vellum

Keep looking

Other head to heads