How to Switch from Stammer AI to Trillet
Stammer AI charges $497/month for its Full SaaS Mode plan with per-minute voice costs ranging from $0.11 to $0.17 depending on the model you select, carries a 3.2-star Trustpilot rating with documented complaints about disappearing training data and billing errors, and offers no HIPAA compliance (only GDPR). Its architecture is chat-first: voice was added on top of an existing chatbot platform, which means voice features, voice quality, and voice-specific roadmap items consistently take a back seat to chat. Trillet ($299/month Agency plan) is a native voice AI platform with a flat $0.12/minute rate, HIPAA/SOC 2/GDPR/TCPA compliance included at no extra cost, and unlimited sub-accounts. This guide walks through the specific migration path, what carries over, what you rebuild, and how to move 5 to 10 clients in a single weekend.
The agencies making this switch are not leaving because Stammer AI is broken. They are leaving because voice became their primary revenue line, and a chat-first platform cannot keep pace with what voice-first clients actually need.
Why Agencies Leave Stammer AI
Agencies migrating from Stammer AI to a voice-first platform consistently cite four issues: pricing complexity, voice quality gaps, compliance limitations, and support reliability. Each one compounds over time as the agency scales.
Pricing Gets Unpredictable at Scale
Stammer AI's wallet-based billing system charges variable per-minute rates depending on which AI model powers the voice agent. As of June 2026, GPT-4.1-nano runs $0.11/minute, GPT-4.1-mini costs $0.12/minute, GPT-4.1 costs $0.16/minute, and Claude 3.7 Sonnet costs $0.17/minute. Layer on add-on fees ($35/month per additional voice agent, $15/month per concurrent call slot, $5/month per knowledge base), and the actual monthly cost becomes difficult to forecast. An agency running 15 clients on the $497/month Full SaaS Mode plan with 5 additional voice agents and 3 concurrent call slots pays $497 + $175 + $45 = $717/month before any voice minutes are consumed.
Trillet's Agency plan is $299/month with unlimited sub-accounts, 300 included minutes, and a flat $0.12/minute overage. No add-on fees for additional agents. No per-seat charges. The same 15-client agency pays $299/month plus usage.
Voice Is Secondary to Chat
Stammer AI started as a chatbot platform. Voice was added later, and the product reflects that priority. The $197/month Agency plan includes 20+ chat agents but only 1 voice agent. Additional voice agents cost $35/month each. Chat features get shipped first. Voice-specific improvements, like latency optimization, voice cloning, and telephony integrations, arrive on a chat platform's development timeline.
When voice is the feature your clients are paying $300 to $600/month for, building on a platform where voice is a secondary module creates real business risk. Feature parity with dedicated voice platforms lags. Voice-specific bugs get triaged behind chat issues.
What to do: If more than half your agency revenue comes from voice agents, you need a platform where voice is the core product, not an add-on. Native voice AI platforms like Trillet build every feature around call quality and telephony first.
No HIPAA Means No Healthcare Clients
Stammer AI lists GDPR compliance but offers no HIPAA certification. Any agency selling to medical practices, dental offices, therapy clinics, or healthcare-adjacent businesses cannot use Stammer AI without exposing themselves and their clients to regulatory liability. Healthcare is one of the highest-value verticals for voice AI agencies, with retainers typically running $500 to $1,000/month per client.
Trillet includes HIPAA, SOC 2 Type II, GDPR, TCPA, ACMA, and DNCR compliance on every plan at no additional cost. No add-on fees, no enterprise-only gates.
Support Reliability Concerns
Stammer AI's Trustpilot reviews include reports of unresponsive support on complex issues, training data disappearing from databases, incorrect invoices, and multiple charges on wallet recharges. The platform offers daily support calls Monday through Friday from 11:30am to 12:00pm PST, which is a 30-minute window. Outside that window, agencies rely on community channels.
Trillet's Agency plan includes dedicated Slack support with direct access to engineering, plus a Skool community with weekly live Q&A sessions, playbooks, and contract templates.
What Transfers and What Doesn't
Migration between any two voice AI platforms involves rebuilding some components. Knowing exactly what carries over and what requires manual work prevents surprises and helps you estimate accurate migration timelines.
What You Keep
Client business information. Your clients' business names, phone numbers, addresses, service lists, pricing, hours, and FAQs all transfer. This is your data, not Stammer AI's. Export it or pull it from your CRM.
Call forwarding setup. Your clients' phones forward to whatever number you point them at. Switching the destination number from a Stammer AI agent number to a Trillet agent number takes about 30 seconds per client. No carrier changes, no porting, no downtime.
Client contracts and billing. Your client relationships, contracts, and billing arrangements are yours. The underlying platform is invisible to your clients if you are properly white-labeled.
CRM and calendar integrations. Both platforms integrate with Google Calendar, Cal.com, and major CRMs. You reconnect the same accounts on the new platform.
What You Rebuild
Voice agent configurations. Agent personalities, scripts, greeting messages, and conversation flows need to be recreated. Trillet's website scraping can auto-build a trained agent from a client's website and reviews in minutes, which means you are not starting from scratch.
Knowledge bases. Stammer AI's knowledge base content does not export to a universal format. Copy the text content and paste it into Trillet's knowledge base builder, or use Trillet's automatic website and review scraping to rebuild it faster than the original manual build.
Conversation histories. Past call transcripts and chat logs stay in Stammer AI. Export them before canceling if you need them for records. Going forward, Trillet provides call transcripts, summaries, and recordings.
Zapier automations. Any Zapier workflows connected to Stammer AI triggers need to be reconnected to Trillet's webhooks or API. Trillet also offers native integrations with GoHighLevel, HubSpot, Meta/FB lead forms, and Stripe, which may replace some Zapier workarounds.
Step-by-Step Migration: 5 to 10 Clients in a Weekend
A structured migration moves 5 to 10 clients from Stammer AI to Trillet in a single weekend without any client-facing downtime. The key is parallel operation: both platforms run simultaneously until you verify each agent works correctly.
Step 1: Set Up Your Trillet Agency Account (Friday Evening, 30 Minutes)
Sign up for the Trillet Agency plan at $299/month. Configure your white-label settings: custom domain, logo, brand colors, and client dashboard branding. This is a one-time setup that applies to all future clients.
Step 2: Create Sub-Accounts and Build Agents (Friday Evening to Saturday Morning, 15-20 Minutes per Client)
For each client, create a sub-account in Trillet's dashboard. Paste the client's website URL, and Trillet's AI scrapes the site plus online reviews to auto-generate a trained voice agent. Review the generated knowledge base, adjust any details, and add custom FAQs or pricing specifics you had in Stammer AI's knowledge base.
For 10 clients, budget roughly 3 hours. Most of that time is review and refinement, not setup.
Step 3: Configure Integrations (Saturday Morning, 10 Minutes per Client)
Reconnect each client's calendar (Google Calendar, Cal.com, or Outlook) and CRM. If you were using Zapier with Stammer AI, set up equivalent webhook triggers in Trillet or switch to native integrations where available.
Step 4: Test Each Agent (Saturday Afternoon, 5-10 Minutes per Client)
Call each Trillet agent from a test phone number. Verify it answers correctly, books appointments against the right calendar, sends SMS follow-ups, and handles common caller questions. Check response latency (Trillet targets sub-2-second end-to-end response time). Test edge cases: what happens when the caller asks something outside the knowledge base, when the calendar is full, or when the caller requests a callback.
Step 5: Switch Call Forwarding (Sunday Morning, 2 Minutes per Client)
Update each client's call forwarding destination from the Stammer AI agent number to the new Trillet agent number. This is a settings change on the client's phone, not a carrier change. Calls start routing to Trillet immediately. There is zero downtime because the forwarding switch is instant.
Step 6: Monitor the First 48 Hours (Sunday and Monday)
Watch the first calls come through on Trillet's dashboard. Review transcripts and summaries. Check that integrations fire correctly. Address any knowledge base gaps that real caller questions reveal.
Step 7: Cancel Stammer AI (After Verification)
Once you have confirmed all clients are operating correctly on Trillet, cancel your Stammer AI subscription. Export any historical data you need before cancellation. Note that Stammer AI does not charge cancellation fees.
Cost Comparison: Stammer AI vs Trillet at 15 Clients
An agency running 15 voice-heavy clients needs concrete cost projections to evaluate the switch. The numbers below use realistic usage assumptions.
Cost Component | Stammer AI (Full SaaS Mode) | Trillet (Agency) |
Base plan | $497/month | $299/month |
Additional voice agents (14 extra) | $490/month ($35 each) | $0 (unlimited) |
Additional concurrent call slots (4 extra) | $60/month ($15 each) | $0 (unlimited concurrent) |
Platform subtotal | $1,047/month | $299/month |
Voice usage (3,000 min at mid-tier model) | $360 to $510/month ($0.12 to $0.17/min) | $324/month ($0.12/min for 2,700 overage min) |
Estimated monthly total | $1,407 to $1,557 | $623 |
HIPAA compliance | Not available | Included |
SOC 2 Type II | Not available | Included |
The platform cost difference alone is $748/month. Over 12 months, that is $8,976 in savings before accounting for usage cost differences. Those savings go directly to agency margin.
What Trillet Does Not Do (Honest Caveat)
Trillet is a voice AI platform, not a chat-plus-voice platform. If your agency sells text-based chatbots alongside voice agents and needs both under one white-label dashboard, Trillet does not replace Stammer AI's chat capabilities. You would need a separate chat solution or limit your offering to voice, SMS, and WhatsApp (all of which Trillet handles natively).
Stammer AI's BYO API key feature on the Full SaaS Mode plan lets agencies use their own OpenAI keys for chat agents, which some agencies prefer for cost control on high-volume text interactions. Trillet does not offer BYO API keys because it controls its own infrastructure end-to-end, which is the architectural decision that enables consistent voice quality and compliance guarantees.
If chat is less than 20% of your agency revenue and voice is the growth engine, the switch makes financial and operational sense. If chat and voice split 50/50, evaluate whether running two platforms still saves money versus Stammer AI's combined offering.
Frequently Asked Questions
How long does it take to migrate from Stammer AI to Trillet?
A single agency operator can migrate 5 to 10 clients in one weekend. The bottleneck is reviewing and refining each agent's knowledge base, not the platform setup itself. Trillet's website scraping builds a baseline agent in minutes, and call forwarding switches take about 30 seconds per client.
Will my clients notice the switch?
No. If you are properly white-labeled on both platforms, your clients see your brand, not the underlying technology. The call forwarding change is invisible to their customers. The only difference callers might notice is improved voice quality and faster response times if you are moving from a chat-first to a voice-first platform.
Does Trillet offer a 14-day free trial like Stammer AI?
Trillet does not offer a free trial. Every plan comes with a 28-day money-back guarantee, no questions asked. You can run real client deployments for 28 days and get a full refund if it is not the right fit. This is more useful than a trial because you test with actual client call volume, not synthetic demos.
Can I run both platforms simultaneously during migration?
Yes, and you should. Keep Stammer AI active while you build and test agents on Trillet. Only switch call forwarding once each agent is verified. Only cancel Stammer AI once all clients are confirmed working. Budget for one month of overlap costs.
What if I need both chat and voice agents?
Trillet handles voice, SMS, WhatsApp, and Facebook Messenger natively. It does not provide text-based website chatbots. If website chat is a core part of your agency offering, you can pair Trillet for voice with a dedicated chat platform, or evaluate whether Stammer AI's combined approach still makes sense for your specific client mix. Many agencies find that voice generates higher-margin recurring revenue than chat, and focusing on voice simplifies operations. See how other agencies compare Stammer AI's approach to voice-first alternatives.
