APIs · head to head
Ably vs Prisma
Ably
APIs
Realtime data delivery platform for pub/sub messaging at scale
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Ably standard and Pro plans layer usage-based charges for messages, connection minutes, and data transfer on top of the base subscription, adding cost complexity.; Prisma prisma Postgres is billed per operation, with the free tier at 100,000 operations and 500 MB of storage
- They diverge on capability: Ably covers Pub/sub messaging, Prisma covers ORM.
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which Ably and Prisma actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (APIs).
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 Ably
- Pub/sub messaging
- Presence
- Message persistence
- Multi-protocol support
- Encryption
- Datadog integration
Only in Prisma
- ORM
- Query builder
- Auto-migrations
- Node.js
- TypeScript
- GraphQL
- REST APIs
- Node.js support
What people use each for
The jobs each tool is most often brought in to do.
Ably
- Building realtime chat or collaborative appsnot Prisma
- Delivering live data feeds like stock prices or sports scoresnot Prisma
- Broadcasting notifications to many concurrent clientsnot Prisma
- Running mission-critical realtime infrastructure with high uptime SLAsnot Prisma
Prisma
- Using a type safe ORM and query layer against a Postgres databasenot Ably
- Adding a managed connection pool and edge cache in front of an existing databasenot Ably
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Ably
- Standard and Pro plans layer usage-based charges for messages, connection minutes, and data transfer on top of the base subscription, adding cost complexity.
- The jump from Standard ($29/month) to Pro ($399/month) is steep for teams needing more than 10k connections but not full Pro capacity.
- 24/7 mission-critical support and 99.999% uptime SLAs are reserved for the custom-priced Enterprise tier.
Prisma
- Prisma Postgres is billed per operation, with the free tier at 100,000 operations and 500 MB of storage
- Starter at $10 a month includes 1M operations then charges $0.0080 per 1,000
- Storage overage runs from $2.00 per GB on Starter down to $1.00 per GB on Business, so the unit cost depends on the plan
- Accelerate charges separately per operation and per GiB of query egress beyond the first 1 KiB
- Cache tag invalidations are not included below the Pro plan and are billed per thousand above it
Pricing, plan by plan
Ably
Free- FreeFree
- 200 concurrent connections
- 500 messages/second
- 6M messages/month
- Standard$29/month
- 10k concurrent channels
- 10k concurrent connections
- 2.5k messages/second
- Pro$399/month
- 50k concurrent channels
- 50k concurrent connections
- 10k messages/second
Prisma
Free- FreeFree
- 1M requests/month
- 360 GB-hours memory
- 4 vCPU-hours
- Starter$10/month
- 5M requests/month
- 1M database operations ($8 per million overage)
- 10 GB storage ($2/GB overage)
- Pro$49/month
- 20M requests/month
- 10M operations ($2 per million overage)
- 50 GB storage ($1.50/GB overage)
- Business$129/month
- 100M requests/month
- 50M operations ($1 per million overage)
- 100 GB storage
Which should you pick?
Choose Ably if
- You need pub/sub messaging.
- You want to start without paying.
- You work on web, ios, android, api.
- You also want presence.
Choose Prisma if
- You need orm.
- You want to start without paying.
- You work on Node.js, TypeScript.
- You also want query builder.
Questions people ask
- Is Ably or Prisma better?
- Neither clearly leads. Ably starts at Free and Prisma at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Ably or Prisma?
- Ably starts at Free and Prisma at Free.
- Does Ably or Prisma run on more platforms?
- Ably runs on web, ios, android, api. Prisma runs on Node.js, TypeScript.
- Can I use Ably for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Ably best used for?
- Ably is most often used for building realtime chat or collaborative apps, delivering live data feeds like stock prices or sports scores, broadcasting notifications to many concurrent clients, running mission-critical realtime infrastructure with high uptime slas. Of those, building realtime chat or collaborative apps and delivering live data feeds like stock prices or sports scores are not what Prisma is typically brought in for.
- What can Ably do that Prisma cannot?
- Ably covers Pub/sub messaging, Presence, Message persistence, Multi-protocol support. Prisma covers ORM, Query builder, Auto-migrations, Node.js.
Answered from the vendors’ own pages
Ably: What does Ably cost?
Ably offers a free plan with 200 concurrent connections, a Standard plan at $29/month plus usage, a Pro plan at $399/month plus usage, and custom Enterprise pricing with unlimited channels and connections.
SourcePrisma: How much does Prisma cost?
Prisma is free to start with 1M requests/month. The Starter plan costs $10/month with 5M requests, the Pro plan $49/month with 20M requests, and the Business plan $129/month with 100M requests. All plans have usage-based overages.
SourceAbly: Is there a free plan, and what are its limits?
Yes, the free plan includes 200 concurrent connections, 500 messages per second, and 6 million messages per month with community and best-effort email support.
SourcePrisma: What is Prisma's overage pricing?
Prisma charges $1 per million requests over the included amount (Starter), $2 per million database operations overage (Pro and Starter), and $1.50-$2 per GB for storage overages depending on the plan. All plans include a hard spend limit on by default.
SourceAbly: How is usage metered?
Beyond plan limits, Ably charges usage-based rates of $2.50 per million messages, $1.00 per million connection minutes, $1.00 per million channel minutes, and $0.25 per GiB of data transfer, with volume discounts available.
SourcePrisma: Does Prisma include data transfer costs?
No, Prisma includes unlimited data transfer with no egress fees on all plans. Prisma ORM remains free across all tiers.
SourceRelated pages
Other head to heads
- Ably vs Pusher
- Ably vs PubNub
- Ably vs Liveblocks
- Ably vs Svix
- Ably vs Apollo GraphQL
- Ably vs Paymentology
- Ably vs Salt Edge
- Ably vs Convoy
- Ably vs Lithic
- Ably vs Brite Payments
- Ably vs Trustly
- Ably vs Directus
- Ably vs Dwolla
- Ably vs Enable Banking
- Ably vs Flybits
- Ably vs i2c
- Ably vs Sanity
- Ably vs PocketBase
- Ably vs Appwrite
- Ably vs Hasura
- Ably vs Payload CMS
- Ably vs Stainless
- Ably vs Thunder Client
- Ably vs GraphQL Apollo
- Ably vs Swagger/OpenAPI
- Ably vs RapidAPI
- Ably vs Codat
- Ably vs Episode Six
- Ably vs Kong Gateway
- Ably vs Marqeta
- Ably vs Meniga
- Ably vs Moov
- Ably vs MX Technologies
- Ably vs Swagger
- Prisma vs Pusher
- Prisma vs PubNub
- Prisma vs Liveblocks
- Prisma vs Svix
- Prisma vs Apollo GraphQL
- Prisma vs Paymentology
- Prisma vs Salt Edge
- Prisma vs Convoy
- Prisma vs Lithic
- Prisma vs Brite Payments
- Prisma vs Trustly
- Prisma vs Directus
- Prisma vs Dwolla
- Prisma vs Enable Banking
- Prisma vs Flybits
- Prisma vs i2c
- Prisma vs Sanity
- Prisma vs PocketBase
- Prisma vs Appwrite
- Prisma vs Hasura
- Prisma vs Payload CMS
- Prisma vs Stainless
- Prisma vs Thunder Client
- Prisma vs GraphQL Apollo
- Prisma vs Swagger/OpenAPI
- Prisma vs RapidAPI
- Prisma vs Codat
- Prisma vs Episode Six
- Prisma vs Kong Gateway
- Prisma vs Marqeta
- Prisma vs Meniga
- Prisma vs Moov
- Prisma vs MX Technologies
- Prisma vs Swagger