Service Fusion
Service Fusion's changelog is SEO blog content, with ZyraTalk Outbound as the one recent product integration.
Comparison · Support
Kayako vs Respond.io
A side-by-side editorial comparison of Kayako and Respond.io — release velocity, themes, recent moves, and the top alternatives to consider.
Kayako vs Respond.io: at a glance
| Feature | Kayako | Respond.io |
|---|---|---|
| Sector | Support | Comms, Support |
| Velocity score | 0.0 | 7.5 |
| Sparks · 30d | 0 | 0 |
| Top themes | customer-support, legacy-product, stalled-changelog, communication-silence | customer-messaging, ai-agents, omnichannel, tiktok-business |
| Last editorial update | 4mo ago | 22d ago |
| Website | Visit → | — |
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 Respond.io?
Respond.io upgraded its AI Agents to GPT-5.6 and added TikTok Business Messaging for US accounts.
Respond.io is shipping across three tracks simultaneously: AI Agent improvements (GPT-5.6 model upgrade, pre-publish instruction review), channel expansion (TikTok Business Messaging for US, Microsoft 365/Outlook email), and workflow automation (missed call auto-follow-up, Google Calendar integration). The status persistence fix — keeping agents online as long as the tab is open — addresses a real reliability concern for teams that rely on online/offline presence for routing.
Kayako vs Respond.io: 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.
Respond.io
7.5COMMSSUPPORT
Respond.io upgraded its AI Agents to GPT-5.6 and added TikTok Business Messaging for US accounts.
◆ Current state
Respond.io is shipping across three tracks simultaneously: AI Agent improvements (GPT-5.6 model upgrade, pre-publish instruction review), channel expansion (TikTok Business Messaging for US, Microsoft 365/Outlook email), and workflow automation (missed call auto-follow-up, Google Calendar integration). The status persistence fix — keeping agents online as long as the tab is open — addresses a real reliability concern for teams that rely on online/offline presence for routing.
◆ Where it's heading
The product is converging on a model where AI Agents handle routine conversations while human agents handle escalations, with channels increasingly auto-enrolled (missed calls become conversations, calendar events surface in the inbox). The channel expansion pace (TikTok, Microsoft 365, Google Calendar within weeks) suggests a deliberate push to cover every channel a business customer might use.
◆ Prediction
Voice channel integration — handling inbound calls with AI Agents rather than just converting missed calls into follow-ups — would complete the omnichannel picture respond.io is assembling.
Kayako alternatives
Other Support products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with Kayako.
Xurrent
Xurrent deploys six Sera AI Agents in September alongside Jamf CMDB and ClickUp integration
Help Scout
Help Scout adds SMS via Twilio and company-wide conversation views, pushing into multi-channel support territory.
Tawk.to
tawk.to ships a programmable widget API and AI assistant improvements while maintaining its free-forever positioning.
Re:amaze
Re:amaze has rebuilt itself around an AI agent that now handles email, chat, and SMS without human involvement.
ManageEngine ServiceDesk Plus
ServiceDesk Plus ships steadily — mostly fixes, one admin UX improvement
Respond.io alternatives
Other Support products tracked by Sparkpulse, ranked by recent ship velocity. Tap any card for the full editorial trajectory or compare directly with Respond.io.
Netcore Cloud
Netcore launches Cori, an AI marketing agent that monitors channels and finds revenue gaps automatically.
Tawk.to
tawk.to ships a programmable widget API and AI assistant improvements while maintaining its free-forever positioning.
Salesmsg
Salesmsg deepens HubSpot automation while AI agents gain autonomous action across text and calling
FluentBooking
FluentBooking opens bookings to AI agents via MCP, then ships workflow ergonomics
Signal Desktop
Signal Desktop is in a quiet maintenance cycle — granular notification controls are the only user-facing addition in two months of beta releases.
Twilio
Twilio expands Salesforce integration to WhatsApp and SMS while adding transcription failover
Recent activity from Kayako and Respond.io
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 23d agoRespond.ioPersistent Online Status While Connected
- 23d agoRespond.ioAI Agents Upgraded to GPT-5.6
- 25d agoRespond.ioReview AI Agent Instructions Before Publishing
- 29d agoRespond.ioGoogle Calendar Integration — View Meetings with Contacts
- 1mo agoRespond.ioMissed Call Auto-Follow-Up Template
- 1mo agoRespond.ioTikTok Business Messaging Now Available for US Accounts
- 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 Respond.io?
They serve adjacent needs but don't currently overlap on shipped themes. Respond.io is currently shipping more aggressively (velocity 7.5 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 Respond.io?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Respond.io is currently shipping more aggressively (velocity 7.5 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 Respond.io?
Top Respond.io alternatives in Support are ranked by recent ship velocity. Browse the "Respond.io alternatives" section above for the current picks, or visit /alternatives/respond-io for the full list with editorial commentary on each.