SIMBA vs Avoca: Which AI Voice Agent Platform Is Right for Your Service Business?

Avoca and SIMBA Voice Agents both use AI to handle phone calls for businesses. But they are built for different buyers, priced differently, and make fundamentally different architectural bets. If you are evaluating both — or trying to decide whether a vertical-specific platform like Avoca or a horizontal platform like SIMBA is the right fit — this comparison will give you the concrete details to make that decision.

What Avoca does

Avoca is an AI voice agent platform built specifically for home services businesses — HVAC, plumbing, electrical, roofing, automotive, moving, and pest control. The company raised over $125 million across Seed, Series A, and Series B rounds at a $1 billion valuation in April 2026, led by Meritech, General Catalyst, and Kleiner Perkins. They are on track to book $1 billion in jobs for their customers this year.

Avoca's core product answers inbound calls for service businesses, books jobs directly into the customer's field service management software, follows up on outstanding estimates, and runs outbound campaigns to fill technician capacity. Their integration with ServiceTitan is particularly deep — Avoca is a ServiceTitan marketplace partner and the platform is designed to work within that ecosystem.

The company targets larger operators — businesses with 20+ customer service reps, $10M+ in annual revenue, and heavy investment in ServiceTitan. Their reported results are strong: 90% booking rates, 3.5x improvements in after-hours bookings, and 25-40% lifts in lead-to-booked-job conversion within 90 days.

What SIMBA does

SIMBA Voice Agents by Speechify is a general-purpose AI voice agent platform that works across any industry. SIMBA handles both inbound and outbound calls across phone, web chat, WhatsApp, SMS, and email. The platform includes TTS, STT, conversational orchestration, and LLM inference in every plan with no pass-through fees.

SIMBA supports any LLM (OpenAI, Anthropic Claude, Google Gemini, or open-source models), offers 10,000+ voices with custom voice cloning, and provides built-in IVR detection and navigation for outbound operations use cases — a capability Avoca does not offer. Every customer on Scale and Enterprise plans gets a dedicated Forward Deployed Engineer who builds their agents, joins their Slack, and iterates weekly.

SIMBA serves customers across healthcare, insurance, real estate, dental, legal, financial services, home services, education, and more. Pricing starts with a free tier (10,000 minutes/month) and scales to enterprise contracts with custom commitments.

The real differences

Industry focus vs. platform flexibility

Avoca is purpose-built for home services. Their booking flows, estimate follow-up sequences, and capacity-based outbound campaigns are designed for HVAC, plumbing, and electrical businesses specifically. If you run a 50-truck HVAC operation on ServiceTitan, Avoca understands your workflows out of the box.

SIMBA is industry-agnostic. You can deploy voice agents for dental practices, insurance claims intake, property management, debt collection, or any other phone-driven workflow. The trade-off is that SIMBA requires more upfront configuration to match a specific vertical's workflows — but the FDE model means that configuration is done for you, not by you.

When Avoca wins: You are a large home services operator (20+ CSRs, $10M+ revenue) deeply embedded in ServiceTitan, and you need a solution that works immediately with zero configuration for HVAC/plumbing/electrical booking workflows.

When SIMBA wins: You operate outside home services, you need multi-industry support, you want to bring your own LLM, you need outbound IVR navigation, or you are a smaller operator who does not meet Avoca's enterprise threshold.

ServiceTitan lock-in vs. integration flexibility

Avoca's deepest integration is with ServiceTitan. If you use ServiceTitan, this is an advantage — the integration is mature and battle-tested. If you use a different field service management platform (Housecall Pro, Jobber, FieldEdge, or a custom system), Avoca's integration story is weaker.

SIMBA integrates with 40+ tools out of the box — Twilio, Salesforce, HubSpot, Zendesk, Calendly, Stripe, Zapier, and more — plus custom webhooks and APIs for any system. There is no platform lock-in.

Pricing transparency

Avoca does not publish pricing. You must go through a sales process and demo to get a quote. Based on their enterprise positioning and target customer profile ($10M+ revenue operators), expect pricing that reflects enterprise-grade contracts.

SIMBA publishes all pricing on simbavoice.ai/pricing:

Plan	Cost	Included minutes	Overage
Free	$0/month	10,000/month	—
Pro	$99/month	50,000/month	$0.06/min
Scale	$499/month	500,000/month	$0.04/min
Enterprise	Custom	Custom commits	From $0.03/min

Every SIMBA plan includes TTS, STT, LLM inference, and conversational orchestration with no hidden fees.

Outbound capabilities

Both platforms support outbound calling, but with different strengths. Avoca excels at estimate follow-up and capacity-based outbound — calling leads when technician schedules have openings. This is a genuine differentiation for home services businesses managing daily dispatch.

SIMBA offers broader outbound capabilities including IVR detection and navigation. SIMBA agents can call insurance companies, pharmacies, government agencies, and vendors, navigate through their phone trees automatically, and complete tasks like insurance verification or claims follow-up. This is critical for healthcare, insurance, and operations use cases where outbound calls hit IVR systems — a scenario Avoca was not designed for.

Voice quality and model flexibility

Avoca does not disclose which TTS or LLM providers power their platform. The voice quality is generally reported as good for the home services context — professional and clear enough for booking conversations.

SIMBA is built on Speechify's proprietary voice engine — the same infrastructure that powers billions of listens for 50M+ consumers. SIMBA offers 10,000+ voices with custom voice cloning from 30 seconds of audio, and lets you bring any LLM. If you need a specific model for compliance, latency, or cost reasons, SIMBA supports it.

Support model

Avoca provides standard enterprise support with account management for their larger customers. Their onboarding is streamlined for ServiceTitan-based home services workflows.

SIMBA assigns a dedicated Forward Deployed Engineer to every Scale and Enterprise customer. Your FDE builds your agents, configures integrations, joins your Slack, and runs weekly optimization cycles. This is closer to having a part-time AI engineer on your team than having a vendor.

Who should choose Avoca

Avoca is the right choice if:

• You run a home services business (HVAC, plumbing, electrical, roofing, pest control) with $10M+ in revenue
• You use ServiceTitan as your primary field service management platform
• Your primary need is inbound call answering and job booking
• You want a solution that works immediately for home services workflows without custom configuration
• Capacity-based outbound (filling technician schedules) is a priority
• You have 20+ CSRs and need to augment or replace part of that team

Who should choose SIMBA

SIMBA is the right choice if:

• You operate in healthcare, insurance, dental, real estate, legal, financial services, or any industry beyond home services
• You need outbound IVR detection and navigation (insurance verification, vendor calls, claims by phone)
• You want transparent, published pricing with a free tier to test before committing
• You need multi-channel support (phone, web chat, WhatsApp, SMS, email) from one platform
• You want to bring your own LLM or switch between models
• You value a dedicated engineer building and maintaining your agents
• You are a smaller operator or startup that does not meet Avoca's enterprise revenue threshold
• You need custom voice cloning or multilingual support

The bottom line

Avoca and SIMBA are not direct competitors in most buying decisions. Avoca is a vertical solution for large home services operators on ServiceTitan. SIMBA is a horizontal platform for any business that handles phone calls at scale.

If you are a 50-truck HVAC company doing $15M in revenue on ServiceTitan, Avoca is built for you. If you are a dental practice, insurance agency, property management company, healthcare provider, or any business that needs voice agents beyond the home services vertical, SIMBA is the better fit.

The easiest way to decide: start building on SIMBA for free with 10,000 minutes per month — no credit card, no sales call required. If you outgrow it or need enterprise features, your FDE will handle the upgrade.