Sleekplan
Sleekplan rebuilt itself around AI triage, then put the feedback board inside ChatGPT.
Comparison · Support
Kayako vs Plain
A side-by-side editorial comparison of Kayako and Plain — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:customer-support
Kayako vs Plain: at a glance
What is Kayako?
Kayako's public changelog has been silent since mid-2022 — the radar is showing a stalled product.
Kayako has not posted a public changelog entry since June 2022. The most recent communication was a CEO apology over a performance incident and a series of link-only release-notes posts pointing to a Help Center article. The visible operational picture is an established customer-support product no longer broadcasting product motion.
What is Plain?
Plain built an autonomous support agent, and has now built the controls to trust it.
Plain's changelog is dated entries with no titles, and nearly all of it concerns two AI surfaces: Ari, the customer-facing responder, and Sidekick, the internal agent. Sidekick spent July gaining reach — its own full-page home, reusable workspace skills, and connection to arbitrary MCP servers. The newest release turns to Ari and adds what was missing around it: a way to test it before customers see it, provenance behind each answer, configurable tone, and explicit escalation rules.
Kayako vs Plain: editorial side-by-side
Kayako
0.0SUPPORT
Kayako's public changelog has been silent since mid-2022 — the radar is showing a stalled product.
◆ Current state
Kayako has not posted a public changelog entry since June 2022. The most recent communication was a CEO apology over a performance incident and a series of link-only release-notes posts pointing to a Help Center article. The visible operational picture is an established customer-support product no longer broadcasting product motion.
◆ Where it's heading
Direction is hard to read from public changelog activity alone, but the trajectory implied by the silence is unmistakable: either the product moved its release communication elsewhere, or development pace slowed enough to stop justifying a regular changelog. Either way, prospects watching only the public surface see no momentum.
◆ Prediction
Without renewed public activity, Kayako will continue to be perceived as legacy in a category where Zendesk, Intercom, and HelpScout are publishing prominently. A customer-facing changelog refresh would be the lowest-effort signal to send, and is the most likely next move if the product is in fact still under active development.
Plain
8.8SUPPORT
Plain built an autonomous support agent, and has now built the controls to trust it.
◆ Current state
Plain's changelog is dated entries with no titles, and nearly all of it concerns two AI surfaces: Ari, the customer-facing responder, and Sidekick, the internal agent. Sidekick spent July gaining reach — its own full-page home, reusable workspace skills, and connection to arbitrary MCP servers. The newest release turns to Ari and adds what was missing around it: a way to test it before customers see it, provenance behind each answer, configurable tone, and explicit escalation rules.
◆ Where it's heading
The sequence reads as capability first, then governance. Plain rebuilt Ari into an agentic first responder, opened Sidekick to any MCP server, and let teams write skills the whole workspace shares — all of which widen what the agents can do and reach. The current release closes the loop the other way, making that autonomy inspectable and bounded before it is switched on. That is the order support-AI vendors have to complete in: teams will not put an agent in front of customers on capability claims alone.
◆ Prediction
With testing and provenance in place, the next step is likely measurement — resolution and escalation rates per skill, or per-answer quality review feeding back into the skills teams write. The entries are short summaries linking off-site, so per-release depth is limited.
Alternatives to Kayako and Plain
Other Support 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 Kayako or Plain.
Comm100
Comm100 publishes steadily about AI support — none of it is Comm100 shipping anything.
Respond.io
respond.io is layering an agent-authoring copilot and consumption billing on top of its omnichannel inbox.
Hatz AI
Hatz sells through MSPs, and its roadmap has started to serve the partner more than the end user
Knowmax
A teaser-only content feed making one argument: AI in the contact center fails on knowledge, not models.
TextMagic
A steady SEO blog on SMS basics, with the occasional ecommerce integration walkthrough.
See all Kayako alternatives → · See all Plain alternatives →
Recent activity from Kayako and Plain
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 1d agoPlainTest Ari before customers see it, with per-answer proof ⚡
- 15d agoPlainImport past conversations from any tool, no built-in importer
- 21d agoPlainSidekick connects to any MCP server ⚡
- 23d agoPlainSidekick gains reusable, workspace-shared skills ⚡
- 28d agoPlainShare published workflows by link
- 1mo agoPlainSidekick gets its own full-page home and tool controls
- 4y agoKayakoKayako Engineering Update
- 4y agoKayakoKayako Release Notes - April 2022
- 4y agoKayakoKayako Release Notes - February 2022
- 4y agoKayakoRecent performance issues
- 4y agoKayakoKayako Release Notes - January 2022
- 4y agoKayakoPlanned Maintenance Outage
Frequently asked questions
What is the difference between Kayako and Plain?
Both compete on the same themes — customer-support — within Support. Plain is currently shipping more aggressively (velocity 8.8 vs 0.0), with 3 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 Kayako better than Plain?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Plain is currently shipping more aggressively (velocity 8.8 vs 0.0), with 3 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Support products to evaluate alongside.
What are the best alternatives to Kayako?
Top Kayako alternatives in Support are ranked by recent ship velocity. Browse the "Kayako alternatives" section above for the current picks, or visit /alternatives/kayako for the full list with editorial commentary on each.
What are the best alternatives to Plain?
Top Plain alternatives in Support are ranked by recent ship velocity. Browse the "Plain alternatives" section above for the current picks, or visit /alternatives/plain for the full list with editorial commentary on each.