Sleekplan
Sleekplan rebuilt itself around AI triage, then put the feedback board inside ChatGPT.
Comparison · Support
Infobip vs Plain
A side-by-side editorial comparison of Infobip and Plain — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:ai-agentsmcp
Infobip vs Plain: at a glance
What is Infobip?
A CPaaS rebuilding around AI agents that act, not just channels that deliver
Infobip publishes quarterly roll-ups, and the feed stores each quarter twice — once as a bare label, once as the summary paragraph. Across Q3 2025 to Q1 2026 the through-line is consistent: AgentOS unifying the communication stack, AI agents that take action rather than reply, MCP servers connecting models to real channels, and AI voice work under Vocalize, against continued WhatsApp, RCS and CDP investment.
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.
Infobip vs Plain: editorial side-by-side
Infobip
0.0SUPPORTCOMMS
A CPaaS rebuilding around AI agents that act, not just channels that deliver
◆ Current state
Infobip publishes quarterly roll-ups, and the feed stores each quarter twice — once as a bare label, once as the summary paragraph. Across Q3 2025 to Q1 2026 the through-line is consistent: AgentOS unifying the communication stack, AI agents that take action rather than reply, MCP servers connecting models to real channels, and AI voice work under Vocalize, against continued WhatsApp, RCS and CDP investment.
◆ Where it's heading
The company is repositioning from delivering messages to running autonomous customer interactions on top of them. Channels are becoming the substrate; the product being sold is the agent layer above. MCP servers matter most here — they make Infobip's channel reach callable by models a customer already runs, rather than requiring Infobip's own agent builder.
◆ Prediction
Expect the next quarterly to lead with AgentOS depth — orchestration, handoff and measurement across agents — since the channel and MCP groundwork it needs has now shipped over three consecutive quarters.
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 Infobip 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 Infobip 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 Infobip alternatives → · See all Plain alternatives →
Recent activity from Infobip 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
- 4mo agoInfobipQ1 2026
- 4mo agoInfobipQ1 2026: AgentOS and MCP servers across channels ⚡
- 4mo agoInfobipQ4 2025
- 4mo agoInfobipQ4 2025: MCP servers, RCS onboarding and CDP schemas
- 5mo agoInfobipQ3 2025
- 5mo agoInfobipQ3 2025: WhatsApp Business Calling and Vocalize
Frequently asked questions
What is the difference between Infobip and Plain?
Both compete on the same themes — ai-agents, mcp — 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 Infobip 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 Infobip?
Top Infobip alternatives in Support are ranked by recent ship velocity. Browse the "Infobip alternatives" section above for the current picks, or visit /alternatives/infobip 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.