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Modal vs Weaviate

Modal logo

Modal

AI

Cloud functions for AI and ML

From
Free
Free plan
Yes
Visit ModalFull review
Weaviate logo

Weaviate

Machine Learning

Open-source vector database

From
Free
Free plan
Yes
Visit WeaviateFull review

The short version

  • Weaviate is an open-source vector database.
  • Weaviate is free; Modal starts at $250/mo.
  • Only Modal lists serverless GPUs; only Weaviate lists vector and keyword search.
  • Where Modal falls short: 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.
  • Where Weaviate falls short: the free tier caps at 100,000 objects, 1 GB of memory and a single collection.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Modal and Weaviate actually diverge.

Attributes where Modal and Weaviate differ
AttributeModalWeaviate
Pricing modelUsage-basedFreemium
PlatformsWeb, APILinux, macOS, Windows, Web
CategoryAIMachine Learning
Founded20212019

Identical on both: starting price (Free), free tier (Yes).

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 Weaviate

  • Vector and keyword search
  • Built-in vectorizers
  • GraphQL API
  • Multi-tenancy
  • Hybrid search
  • OpenAI
  • Hugging Face
  • Cohere

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 Weaviate
  • Executing Python functions on cloud compute without managing serversnot Weaviate

Weaviate

  • Running a vector database for semantic and hybrid searchnot Modal
  • Generating and storing embeddings alongside the objects they describenot 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

Weaviate

  • The free tier caps at 100,000 objects, 1 GB of memory and a single collection
  • Billing is per million vector dimensions rather than per record, so wider embeddings cost proportionally more for the same object count
  • Premium is a prepaid contract starting at $400 a month rather than pay as you go
  • Storage rates do not fall consistently with tier, and Premium Dedicated is $0.1505 per GiB against $0.12 on the cheaper Flex plan
  • The Query Agent is metered separately, free to 1,000 requests a month and $30 a month plus overage beyond

Pricing, plan by plan

Modal

Free
  • StarterFree
    • 3 seats
    • 100 containers
    • 10 GPU concurrency
  • Team$250/mo
    • Unlimited seats
    • 5,000 containers
    • 50 GPU concurrency
  • EnterpriseOn request
    • Custom seats, containers, and GPU concurrency

Weaviate

Free
  • Open SourceFree
    • Full features
    • Self-hosted
  • ServerlessFree
    • Managed service
    • Auto-scaling

Which should you pick?

Choose Modal if

  • You need serverless gpus.
  • You want to start without paying.
  • You work on Web, API.
  • You also want python functions.
Modal review

Choose Weaviate if

  • You need vector and keyword search.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Web.
  • You also want built-in vectorizers.
Weaviate review

Questions people ask

Is Modal or Weaviate better?
Neither clearly leads. Modal starts at Free and Weaviate at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Modal or Weaviate?
Modal starts at Free and Weaviate at Free.
Does Modal or Weaviate run on more platforms?
Modal runs on Web, API. Weaviate runs on Linux, macOS, Windows, Web.
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 Weaviate is typically brought in for.
What can Modal do that Weaviate cannot?
Modal covers Serverless GPUs, Python functions, Auto-scaling, Fast cold starts. Weaviate covers Vector and keyword search, Built-in vectorizers, GraphQL API, Multi-tenancy.

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
Weaviate: What pricing options does Weaviate offer?

Weaviate provides a free tier with usage-based pricing, plus enterprise options. Visit the pricing page for detailed information on plans.

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
Weaviate: Does Weaviate offer customer support?

Yes, support is included with Weaviate's cloud offerings. Enterprise customers receive first-class support from their global team of experts.

Source
Modal: What are the seat limits?

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

Source
Weaviate: Can I deploy Weaviate on my own infrastructure?

Yes. Weaviate is open source and deployment-agnostic. You can run it in your own cloud environment or use their managed cloud service.

Source
Weaviate: What data security features does Weaviate provide?

Weaviate includes security & governance, RBAC, SOC 2 and HIPAA compliance, along with multi-tenancy and high availability for enterprise requirements.

Source
Weaviate: How do I get started with Weaviate?

Sign up for their cloud tier, create your first dataset, connect an LLM, and build your AI app. Documentation and quickstart guides are available for Python, Go, TypeScript, and JavaScript.

Source
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