The Sierra alternative.

Most conversations resolved for under $0.05 each*, with the help desk included.

Compare workflows Start free trial

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12 Open

Florian Berger3m

Thanks, Florian. A teammate will reissue it and follow up here.
Mia Kellerman 4m

Kai Support · Checking the payment logs
Jonas Weber 12m

Kai Support: Refund the duplicate $49 charge?
Sofia Lindqvist 1h

Kai Support · waiting on Sofia
Tom Alvarez Tomorrow 3h

Invoice for April
Ade Okafor 6m

Kai Code · fixing… · 6 min
Priya Raman 2d

Love the new dashboard

Florian Berger

Today

Hi, our invoice shows 20% VAT but we are a company in Austria with a VAT ID.WhatsApp · 9m

With a valid EU VAT ID the reverse charge applies. Add it under Settings › Billing and the next invoice is issued without VAT. Should a teammate reissue this one?Seen · 9m

Yes please, we need the March invoice corrected.WhatsApp · 3m

Thanks, Florian. A teammate will reissue it and follow up here.Seen · 3m

Kai Support transferred ticket to Human.

Hi Florian, I'll reissue the March invoice without VAT today. With your VAT ID in Settings › Billing, new invoices skip VAT.Lukas Boehler · Sent · now

Reply Use ⌘K for shortcuts

Kai Support answers in chat, email and WhatsApp, live in minutes, and hands the hard ones to your team with the full context. Sierra uses outcome-based pricing with no public price list; Gleap publishes its plans and adds bug reports and reviewed fixes.

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All

12 Open

Florian Berger3m

Thanks, Florian. A teammate will reissue it and follow up here.
Mia Kellerman 4m

Kai Support · Checking the payment logs
Jonas Weber 12m

Kai Support: Refund the duplicate $49 charge?
Sofia Lindqvist 1h

Kai Support · waiting on Sofia
Tom Alvarez Tomorrow 3h

Invoice for April
Ade Okafor 6m

Kai Code · fixing… · 6 min
Priya Raman 2d

Love the new dashboard

Florian Berger

Today

Hi, our invoice shows 20% VAT but we are a company in Austria with a VAT ID.WhatsApp · 9m

With a valid EU VAT ID the reverse charge applies. Add it under Settings › Billing and the next invoice is issued without VAT. Should a teammate reissue this one?Seen · 9m

Yes please, we need the March invoice corrected.WhatsApp · 3m

Thanks, Florian. A teammate will reissue it and follow up here.Seen · 3m

Kai Support transferred ticket to Human.

Hi Florian, I'll reissue the March invoice without VAT today. With your VAT ID in Settings › Billing, new invoices skip VAT.Lukas Boehler · Sent · now

Reply Use ⌘K for shortcuts

Jonas Weber11:02 AM

Can I export my data as CSV?

Kai11:02 AM

Yes: Reports → Export → CSV.

Exporting reports to CSV · Help center

Survey notifications not showing

Today

Survey notifications never arrive for visitors who are not logged in. Chat notifications work fine.6m

Thanks, Isabella. I'm checking why survey notifications skip signed-out visitors and will get back to you here.Seen · 5m

5m Working

Reply Use ⌘K for shortcuts

From the first answer to the reviewed fix and the follow-up.

Compare workflows

Sierra vs Gleap at a glance. Gleap is a support platform with Kai Support on every plan and bug reports, feedback and, from Team, investigation and reviewed code work in one workspace, with Starter at $29/month and Team at $149/month billed annually; Sierra builds branded enterprise AI agents for voice, chat and messaging, with outcome-based pricing and no public price list (checked September 26, 2026). Evaluate voice and contact-center requirements separately.

Compared

Gleap

Sierra

Primary focus

Gleap Support, bug reports, feedback AI-native customer support, bug reports and product feedback for software teams

Sierra Enterprise conversational AI agents Conversational AI agents for enterprise customer experience

Channels

Gleap Widget; email from Team Web and mobile widget on every plan; email, WhatsApp and other messaging channels from Team

Sierra Voice, chat, email, SMS Voice, chat, email, SMS, WhatsApp, Apple Business Chat and ChatGPT

Agent building

Gleap Knowledge sources and workflows Kai Support configured from your knowledge sources and workflows; API, MCP and web search tools from Team

Sierra Agent Studio journeys Agent Studio journeys, Ghostwriter and 40+ pre-built integrations

Technical evidence

Gleap Screenshots, replay and logs Reports with supported screenshots, replay, logs and customer context

Sierra Agent Traces Agent Traces show decisions, tool calls and responses

AI investigation

Gleap Kai Support from Team From Team, Kai Support investigates with logs, the click trail and read-only code access

Sierra Validate in your setup Validate source-level investigation in your proposed setup

Code work

Gleap Kai Code from Team From Team, Kai Code plans, writes and tests code and opens a pull request for review

Sierra Confirm the engineering handoff Confirm the engineering handoff and integration scope

Commercial comparison

Gleap From $29/month Starter $29/month billed annually or $35 monthly; Team $149/month billed annually or $179 monthly with unlimited seats, Kai Support’s investigations and Kai Code; Pro $299/month ($359 monthly) adds advanced reports, LLM model choice, the SOC 2 report and priority support; AI usage separate. USD list prices, checked September 30, 2026

Sierra Outcome-based or blended pricing Outcome-based or blended pricing; request a current quote

Best evaluation case

Gleap Question to code change A customer question that turns into a bug, a code change and a follow-up

Sierra High-volume voice and chat High-volume voice and chat across enterprise systems of record

Price the scope you need. Gleap Starter is $29/month billed annually ($35 monthly) for one seat with Kai Support. Team is $149/month billed annually, with unlimited seats, projects and every Kai agent; Pro, at $299/month, adds advanced reports, LLM model choice, the SOC 2 report and priority support. AI usage is separate. Sierra prices per agreed outcome, with blended consumption pricing for some interactions and no public price list. Request a quote and compare it with a representative workload.

Meet your AI team.

Answer customers. Investigate issues. Build what comes next. Kai Support and Kai Copilot work on every plan; investigations and Kai Code come with Team. AI usage is billed separately on every plan.

Kai Support

Answers customers

Answers from your knowledge base and connected sources. From Team, it investigates hard tickets with logs, the click trail and your code.

Meet Kai Support

Kai Copilot

Works with your team

Press ⌘J on any page. It answers customers when you say yes, drafts articles, explains your numbers and, from Team, drafts the changelog when a fix ships. Your team sends what it drafts.

Meet Kai Copilot

Kai Code

Builds the fix

Plans the change, writes and tests code, and opens a pull request. Your engineers review and merge.

Meet Kai Code

Answer from your knowledge.

Kai Support on every plan.

Kai Support answers from your help center and connected sources, and brings a teammate in when a conversation needs one. Test it with the questions your customers actually ask.

Explore Kai Support

Jonas Weber11:02 AM

Can I export my data as CSV?

Kai11:02 AM

Yes: Reports → Export → CSV.

Exporting reports to CSV · Help center

I was charged twice this month. Can someone help?3:12 PM

Sorry about that, Priya. A teammate will follow up here.Seen · 3:13 PM

Kai Support transferred ticket to Human.

3:13 PM Handed over to your teamRefund a double charge Assign to me

Lukas assigned this ticket to themself.

Hand over with context.

The team sees the whole thread.

When Kai Support hands over, the conversation, customer context and any reported issue stay in the shared inbox. Your team replies from the same place.

Explore the support platform

Keep the evidence together.

See what the customer saw.

A report can include screenshots, session replay, console and network logs and device context, depending on SDK and configuration. Support and engineering work from the same evidence.

Explore bug reporting

app.lumenhq.com/checkout SPRING20 Checkout Something went wrong

Exported invoice PDFs are empty since this morning. The preview still shows every line.10:02 AM

Thanks, Priya. I'm taking a closer look at this now and will update you here.Seen · 10:03 AM

10:03 AM Working

Investigate before answering.

Give hard tickets a next step.

From Team, Kai Support investigates the hard tickets with the logs, click trail, screenshots and read-only code. It returns findings to the ticket and can prepare coding tasks for confirmed bugs.

Explore Kai Support

Prepare the fix for review.

Your engineers merge and release.

From Team, Kai Code plans the change, writes and tests code, and opens a pull request linked to the ticket. Your engineers review and merge, then confirm the fix is live before the customer hears back.

Explore Kai Code

3 changed files +84 −12 PR #412

Notifications.tsx +61−9
useNotificationSocket.ts +19−3
Notifications.test.tsx +4−0

src/drawer/Notifications.tsx

  @@ -42,7 +42,15 @@ NotificationsDrawer  const { items } = useNotifications();− useEffect(() => { if (open) refetch(); });+ const socket = useNotificationSocket();+ useEffect(() => {+   if (!open) return;+   return socket.on('notification:new',+     (n) => setItems((p) => [n, ...p]));+ }, [open, socket]);  return <Drawer open={open}>

  @@ -8,6 +8,18 @@ useNotificationSocket  const socket = useSocket();+ const on = useCallback((evt, fn) => {+   socket.on(evt, fn);+   return () => socket.off(evt, fn);+ }, [socket]);− return socket;+ return { on };

  @@ -0,0 +1,4 @@+ it('appends a pushed notification',+   async () => {+   render(<NotificationsDrawer open />);+   socket.emit('notification:new', n);+   expect(await findByText(n.title))+     .toBeVisible();

Separate channels from workflow.

List the voice, telephony, payment and contact-center requirements your operation depends on. Test those with Sierra or your existing tools; test Gleap on the conversations that touch your product.

Run one difficult case end to end.

Pick a customer question with a suspected bug. Check the answer, the handoff, the evidence, the investigation findings and who reviews the code change.

Plan the transition without an importer.

No native Sierra importer is assumed. Export knowledge content and conversation history, load a sample, and pilot Gleap beside your current setup before moving live channels.

How teams use Gleap

“Everything is in the same place.”

Tridonic brought customer conversations, ticket routing, surveys, and AI support into one Gleap workspace.

Elif Kavas

Digital Customer Experience Platforms Specialist, Tridonic

“An essential part of our development process.”

Gleap was implemented within minutes and helps MARK.ONE fix bugs quickly while building real customer relationships.

Mark Breuß

Founder, MARK.ONE

“This is an exceptionally good tool.”

A support result: Kai Support, Gleap’s support agent, handles 50 to 60 percent of Commonplace’s inbound support.

Benjy Meyer

Chief Product & Technology Officer, Commonplace

Why choose Gleap as a Sierra alternative?

Kai Support resolves most conversations for an estimated under $0.05 each, live in minutes, with the help desk included. Kai Support answers on every plan, and bug reports, feedback, investigation and reviewed code work share one workspace with published pricing. Sierra fits enterprises that need branded agents across voice, chat and email at high volume.

What does Sierra do well?

Sierra builds branded conversational agents for enterprise customer experience across voice, chat, email, SMS, WhatsApp and ChatGPT, in 59 languages. Its Agent Studio documents journeys, 40+ pre-built integrations, evaluations, regression tests and Agent Traces. Stay with Sierra when telephony, payment collection over the phone or actions across enterprise systems of record are the main requirement.

How is Sierra priced?

Sierra uses outcome-based pricing with criteria agreed per contract and publishes no price list. Its pricing post describes blended consumption pricing for interactions such as routing and states that escalated cases are mostly not charged; sierra.ai/pricing still returned no page on 26 September 2026. Request a quote for your volume and outcome definitions before comparing costs.

Is Gleap cheaper than Sierra?

No verified comparison is possible without a Sierra quote, so this page makes no savings claim. Gleap publishes its plans: Starter at $29/month billed annually ($35 month-to-month), and Team at $149/month billed annually or $179 month-to-month with unlimited seats, projects and every Kai agent. AI usage is billed separately. See Gleap pricing.

Which Gleap plan includes investigations and Kai Code?

Team, Pro and Enterprise include Kai Support’s investigations and Kai Code. Kai Support is available on every plan; AI usage is billed separately, and a resolution costs an estimated under $0.05. Compare the plan you need with a Sierra quote for the same scope.

What does switching from Sierra involve?

Plan it as an export, a sample and a pilot; no native Sierra importer is assumed. Export knowledge content and conversation history, load a sample into Gleap, configure Kai Support, handoffs and channels, then run both setups side by side before moving live traffic. Voice and telephony need their own plan.

How was this comparison checked?

Gleap publishes this comparison. Sierra’s product overview, Agent Studio and Channels pages and its pricing posts were rechecked on 26 September 2026, when sierra.ai/pricing still returned no page; its Voice and Trust and Reliability pages were checked on 15 September 2026. Gleap claims follow current product and plan evidence. Customer quotations describe their attributed experience, not a controlled comparison with Sierra.

Does Gleap offer voice agents?

Yes, from Team: Kai Voice answers voice calls in the widget and on your phone lines, billed per minute. Gleap’s support platform page documents the widget, plus email, WhatsApp, Messenger, Instagram, Telegram and Slack from Team. Sierra documents inbound and outbound voice with handoff to care representatives. Map your call flows, telephony and contact-center requirements before choosing a replacement.

How does Kai Support hand a conversation to a person?

Kai Support answers from your knowledge sources and brings a teammate in when the conversation needs one, following the handoff behavior your team configures. The full thread, customer context and any reported issue stay in the shared inbox. Explore Kai Support.

Can Gleap investigate a reported bug?

Yes, from Team. Kai Support reads logs, the click trail, screenshots and read-only code, returns findings to the ticket and can prepare coding tasks for confirmed bugs. An investigation is not a fix; your engineers review any code change before it ships.

How does a support ticket become a reviewed code change?

Customer conversations supply the need and the evidence for investigation, planning and code work. Kai Code opens a pull request your engineers review and merge, and the customer hears back once the fix is live. Explore self-driving development.

Can we review security and SDKs before switching?

Yes. Review the Gleap Trust Center, required permissions and plan entitlements during the trial. Gleap provides web, iOS, Android, React Native and Flutter SDKs; verify capture and widget behavior on each platform. Sierra publishes its own certifications, including SOC 2, ISO 27001 and PCI DSS, on its trust page.

Answer customers. Ship the fix.

Start free trial

Book a demo

7 days free. Cancel anytime. Card required. First charge on day 8 unless you cancel.

4.6/5

on G2

The Sierra alternative.

Meet your AI team.

Kai Support

Kai Copilot

Kai Code

Answer from your knowledge.

Hand over with context.

Keep the evidence together.

Investigate before answering.

Prepare the fix for review.

Evaluate on real conversations.

Separate channels from workflow.

Run one difficult case end to end.

Plan the transition without an importer.

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