GravityKit
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Comparison · Infra & APIs
Ably vs ClickHouse
A side-by-side editorial comparison of Ably and ClickHouse — release velocity, themes, recent moves, and the top alternatives to consider.
Ably vs ClickHouse: at a glance
| Feature | Ably | ClickHouse |
|---|---|---|
| Sector | Infra & APIs | Infra & APIs, Analytics |
| Velocity score | 7.5 | 5.0 |
| Sparks · 30d | 2 | 0 |
| Top themes | ai transport, realtime messaging, agents, mau-billing | parallel maintenance branches, lts cadence, version-only entries, scraping issue |
| Last editorial update | 21h ago | 6mo ago |
| Website | — | Visit → |
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 ClickHouse?
ClickHouse is shipping six active version branches in parallel — but the captured feed has only tags, no notes.
What's visible in the captured feed is high-cadence GitHub release tagging across at least six parallel branches in two weeks: 25.8.x-lts, 25.10.x, 25.12.x, 26.1.x, 26.2.x, and 26.5.x. Each entry is title-only with no release notes captured. The branch fan-out is itself meaningful — ClickHouse is maintaining LTS plus several stable branches simultaneously, which is the cadence pattern of a mature OSS database serving enterprises that pin to specific minor versions.
Ably vs ClickHouse: 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.
ClickHouse
5.0INFRA · APISANALYTICS
ClickHouse is shipping six active version branches in parallel — but the captured feed has only tags, no notes.
◆ Current state
What's visible in the captured feed is high-cadence GitHub release tagging across at least six parallel branches in two weeks: 25.8.x-lts, 25.10.x, 25.12.x, 26.1.x, 26.2.x, and 26.5.x. Each entry is title-only with no release notes captured. The branch fan-out is itself meaningful — ClickHouse is maintaining LTS plus several stable branches simultaneously, which is the cadence pattern of a mature OSS database serving enterprises that pin to specific minor versions.
◆ Where it's heading
Without per-release content we can't comment on feature direction. The branch shape says enterprise-grade backporting is alive and well; the new 26.5 branch starting in late April implies a forward-development cycle is underway alongside the maintenance work. Worth fixing the changelog ingest to pull release-note bodies from GitHub before the next pass — there's a real signal here being lost.
◆ Prediction
Once the scraper captures release-note bodies, expect to see continued cherry-pick patches on 25.x-LTS for at least 12 more months in parallel with 26.x feature work. Unable to predict feature direction from version tags alone.
Alternatives to Ably and ClickHouse
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 ClickHouse.
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.
See all Ably alternatives → · See all ClickHouse alternatives →
Recent activity from Ably and ClickHouse
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoAblyAI Transport 1.0 makes Ably a resumable transport for AI chat ⚡
- 2d agoAblyJava SDK 2.1 reads and updates LiveObjects over HTTP
- 3d 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
- 6mo agoClickHousePatch on 25.8 LTS branch (notes not captured)
- 6mo agoClickHousePatch on 26.2 stable branch (notes not captured)
- 6mo agoClickHousePatch on 25.12 stable branch (notes not captured)
- 6mo agoClickHousePatch on 25.10 stable branch (notes not captured)
- 6mo agoClickHousePatch on 25.12 stable branch (notes not captured)
- 6mo agoClickHousePatch on 25.12 stable branch (notes not captured)
Frequently asked questions
What is the difference between Ably and ClickHouse?
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 ClickHouse?
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 ClickHouse?
Top ClickHouse alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "ClickHouse alternatives" section above for the current picks, or visit /alternatives/clickhouse for the full list with editorial commentary on each.