About Ably
Ably provides APIs and SDKs for live features such as chat, collaboration, notifications, broadcast and fan engagement.
Products
- Ably Pub/Sub: realtime messaging APIs with message guarantees.
- Ably Chat: APIs for chat features.
- Ably AI Transport: realtime layer that keeps AI agent sessions in sync.
- Ably LiveObjects: syncs application state across users and devices.
- Ably Spaces: APIs for collaborative environments.
- Ably LiveSync: syncs a database with frontends and publishes changes to clients.
Used for
- Live scores, interactive polls, realtime commentary and push notifications.
- Patient monitoring, care team alerts and telehealth chat.
- Live price feeds, trade confirmations, secure messaging and realtime portfolio updates.
From Ably's own website, read 2026-10-23. How we build listings.
How to evaluate Streaming & Real-Time Analytics
This is how the CIOPages Research Team evaluates this category. It is not an assessment of Ably. It comes from our Streaming Data & Event Processing buyer guide.
25%
Throughput, Latency & Durability
Sustained throughput and tail latency at your partition count, ordering and exactly-once / at-least-once delivery guarantees, replication and multi-AZ durability, retention limits, and behavior under broker failure and rebalancing
20%
Operating Model & Architecture
Self-managed vs. fully managed vs. serverless vs. bring-your-own-cloud, KRaft (post-ZooKeeper) operations, diskless / object-storage-backed options, autoscaling, partition rebalancing, and upgrade and patching burden on your team
20%
Kafka-API Compatibility & Portability
Fidelity of the Kafka protocol (consumer groups, transactions, compaction), reuse of existing clients, connectors and tooling, lock-in to a single cloud, and the realistic effort to migrate in or out
15%
Stream Processing & Ecosystem
Native or integrated processing (Flink, Kafka Streams, Spark Structured Streaming, ksqlDB), connector catalog (CDC, sinks, sources), schema registry and governance, and direct landing into Iceberg / Delta lakehouse tables
10%
Security, Governance & Compliance
Encryption in transit and at rest, mTLS / SASL / OAuth and RBAC, audit logging, private networking, data residency and BYOC data-boundary control, and SOC 2 / ISO 27001 / GDPR coverage
10%
Cost Model & Economics at Scale
Pricing unit (capacity / throughput / consumption), inter-AZ and egress charges, storage and retention cost, processing billed separately, and how the bill behaves as volume, partitions, and connectors grow
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Quick Facts
ably.com Pricing pageCategoryData & Analytics
SubcategoryStreaming & Real-Time Analytics
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