GravityKit
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Comparison · Infra & APIs
Ably vs Dub
A side-by-side editorial comparison of Ably and Dub — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs Dub: at a glance
| Feature | Ably | Dub |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs |
| Velocity score | 7.5 | 5.0 |
| Sparks · 30d | 2 | 0 |
| Top themes | ai transport, realtime messaging, agents, mau-billing | partner-programs, affiliate-marketing, testing, rewards |
| Last editorial update | 21h ago | 1d ago |
| Website | — | — |
What is Ably?
Ably's AI Transport hits 1.0 and plugs straight into Vercel's useChat with resumable streams.
Ably is repositioning its realtime pub/sub network as the transport layer for AI agent output. AI Transport JS 1.0 runs on ordinary Pub/Sub channels and ships adaptors for the Vercel AI SDK, OpenAI Responses API and AG-UI, plus a useChat transport that resumes a stream after a reload. It lands a week after the switch to monthly-active-user pricing and breaking SDK majors that split every client into device and server packages.
What is Dub?
Dub adds staging workspaces to test partner programs without real payouts.
Dub's work since July is almost entirely Dub Partners. The newest release adds staging workspaces with separate data, simulated payouts and Stripe test mode, plus copying rewards and discounts to production. It follows AI screening of partner applications, group switching, per-partner and per-link rewards and retainer-style payments.
Ably vs Dub: editorial side-by-side
Ably
7.5INFRA · APIS
Ably's AI Transport hits 1.0 and plugs straight into Vercel's useChat with resumable streams.
◆ Current state
Ably is repositioning its realtime pub/sub network as the transport layer for AI agent output. AI Transport JS 1.0 runs on ordinary Pub/Sub channels and ships adaptors for the Vercel AI SDK, OpenAI Responses API and AG-UI, plus a useChat transport that resumes a stream after a reload. It lands a week after the switch to monthly-active-user pricing and breaking SDK majors that split every client into device and server packages.
◆ Where it's heading
The November releases fit one plan: split clients so MAU billing can count end users, then make the AI layer a thin adaptor on top of the same channels used for chat, presence and LiveObjects. Server-side additions in Java and JS (HTTP LiveObjects, channel pools, a Temporal plugin) point at agent backends as the intended publisher.
◆ Prediction
Expect more agent framework adaptors and server SDKs reaching AI Transport parity, with Chat and LiveObjects examples built around agents joining human conversations.
Dub
5.0INFRA · APIS
Dub adds staging workspaces to test partner programs without real payouts.
◆ Current state
Dub's work since July is almost entirely Dub Partners. The newest release adds staging workspaces with separate data, simulated payouts and Stripe test mode, plus copying rewards and discounts to production. It follows AI screening of partner applications, group switching, per-partner and per-link rewards and retainer-style payments.
◆ Where it's heading
Dub is maturing from an affiliate add-on into a partner program platform that larger companies can run safely, with finer reward rules and now a safe place to test them. The link product gets occasional setup improvements but is no longer the focus.
◆ Prediction
Expect more partner program controls and testing tools, such as further reward conditions or staging-to-production copying beyond rewards and discounts.
Alternatives to Ably and Dub
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Ably or Dub.
Payload CMS
Payload's v4 beta.9 keeps every past image crop and raises the Node floor again.
Nautobot
Nautobot 3.3 alpha 2 adds test helpers and a cable location filter after 3.2.9's token-leak fix.
Clair
Clair 4.10 RC can read SBOMs to match Java vulnerabilities.
Shuffle
Shuffle tags builds almost daily, but the notes are empty.
KrakenD
KrakenD's community edition is shipping only dependency bumps.
Recent activity from Ably and Dub
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoAblyAI Transport 1.0 makes Ably a resumable transport for AI chat ⚡
- 2d agoDubStaging workspaces
- 2d agoAblyJava SDK 2.1 reads and updates LiveObjects over HTTP
- 2d agoAblyJS SDK 3.1 adds channel pools and a Temporal plugin
- 4d agoAblyAbly Kafka Connector v4.2.1
- 8d agoAblyMonthly active user (MAU) pricing ⚡
- 8d agoAblyAbly Chat React UI Kit v0.4.0
- 29d agoDubAutomated application screening
- 1mo agoDubLetting partners switch groups via application
- 1mo agoDubPartner-level and link-level rewards/discounts
- 2mo agoDubIntroducing retainer-style rewards
- 2mo agoDubOne-click DNS setup with Domain Connect
Frequently asked questions
What is the difference between Ably and Dub?
They serve adjacent needs but don't currently overlap on shipped themes. Ably is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Ably better than Dub?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Ably is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Ably?
Top Ably alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Ably alternatives" section above for the current picks, or visit /alternatives/ably for the full list with editorial commentary on each.
What are the best alternatives to Dub?
Top Dub alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Dub alternatives" section above for the current picks, or visit /alternatives/dub for the full list with editorial commentary on each.