Twilio
Twilio fills out EU data residency, RBAC, and unified messaging APIs
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?
Support platform betting hard on an agentic AI responder as the default first touch
Plain is a customer-support tool whose recent work is dominated by two AI agents: Ari (autonomous responder) and Sidekick (assistant). In this window Ari was rebuilt from a classify-and-handoff workflow into an agentic, search-first default first responder, suggested replies were moved onto the same engine, and Sidekick gained tool integrations and a Slack presence. Platform plumbing (Attio, Linear, workflows) continues alongside.
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
5.0SUPPORT
Support platform betting hard on an agentic AI responder as the default first touch
◆ Current state
Plain is a customer-support tool whose recent work is dominated by two AI agents: Ari (autonomous responder) and Sidekick (assistant). In this window Ari was rebuilt from a classify-and-handoff workflow into an agentic, search-first default first responder, suggested replies were moved onto the same engine, and Sidekick gained tool integrations and a Slack presence. Platform plumbing (Attio, Linear, workflows) continues alongside.
◆ Where it's heading
The direction is unmistakably AI-native support: make the agent the default first responder, give it agentic search and tool access, and meet users where they work (Slack, the composer, workflows). The non-AI releases — CRM connectors, workflow actions, API additions — increasingly exist to feed context to that agent.
◆ Prediction
Expect Ari and Sidekick to keep absorbing the support workflow — more tool integrations, deeper autonomy, and tighter loops between suggested replies and autonomous sends — with platform/API work continuing to supply the context they rely on.
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.
Spiceworks
Spiceworks remains an IT-news desk, not a product — its feed is editorial
Supportbench
Supportbench's feed is a daily helpdesk-migration blog, not a changelog
Front
Front is rebuilding the shared inbox around AI agents and omnichannel reach.
Service Fusion
Service Fusion's feed is field-service marketing and partner content, not release notes.
Respond.io
Respond.io is pushing AI agents deeper into every stage of the customer conversation.
See all Kayako alternatives → · See all Plain alternatives →
Recent activity from Kayako and Plain
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 3d agoPlainAPI: createThreadLink can attach existing Linear issues
- 9d agoPlainSidekick AI now answers in Slack via @mention
- 10d agoPlainSix improvements to Ari's response judgment
- 17d agoPlainSend a Slack message as a workflow action
- 1mo agoPlainAri rebuilt as an agentic, search-first default responder ⚡
- 1mo agoPlainSidekick connects to your tools to pull live context ⚡
- 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 5.0 vs 0.0), with 0 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 5.0 vs 0.0), with 0 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.