comparison · wrapper vs wrapper
Voicerr vs Stammer in 2026: Pricing, Features, and the Price-Hike Fallout
By builders, for builders.
Voicerr and Stammer are the two best-known agency-focused wrappers in the AI voice space in 2026. Both are UI and multi-tenant layers built on top of upstream voice infrastructure (primarily Vapi and Retell), both target AI voice agencies as the buyer, and both ship white-label sub-account features out of the box. The honest read in 2026 is that the comparison changed dramatically in the first quarter of the year when Voicerr raised prices roughly 7 to 10x with limited grandfathering. Today, Stammer is the more affordable agency-tier wrapper for the typical 5-to-15 client agency, and Voicerr's brand goodwill has not fully recovered from the hike. Both still work as products. The strategic question for agency operators is no longer just "which has better features" but also "which vendor's pricing posture do I trust over the next 18 months."
Side-by-side comparison
| Capability | Voicerr | Stammer |
|---|---|---|
| Pricing model | Monthly tiers (post-hike) | Monthly tiers + usage |
| Agency tier entry price | ~$997/mo | ~$397/mo |
| Included minutes (agency tier) | Capped, varies by tier | Capped, varies by tier |
| Per-minute overage | ~$0.20 to $0.35 | ~$0.18 to $0.30 |
| Built-in CRM | Basic contacts | Basic contacts + campaigns |
| White-label sub-accounts | Yes | Yes, cleaner UX |
| Multi-tenant client billing | Yes, post-hike repriced | Yes, agency tier |
| Voice models in catalog | Vapi/Retell pass-through | Vapi/Retell pass-through |
| Latency posture | Inherited from upstream | Inherited from upstream |
| Integrations | Native + Zapier + webhooks | Native + Zapier + webhooks |
| Agency-friendly out of box | Yes | Yes |
| Pricing predictability 2026 | Recently repriced 7 to 10x | Stable through 2026 so far |
| Brand goodwill in agency community | Damaged post-hike | Currently strong |
| Upstream-risk exposure | High (wrapper) | High (wrapper) |
Best for: Voicerr
Pick Voicerr today only if you already have an active deployment on the platform, your migration cost is meaningfully higher than the new monthly bill, and your clients are not sensitive to the per-minute pass-through margin. The Voicerr product itself remains competent. The case to pick it for a brand-new agency in 2026 is harder to make than it was in 2025 because the price-to-feature ratio shifted unfavorably and because the brand has lost some trust in the agency operator community. See the Voicerr site for current pricing.
Best for: Stammer
Pick Stammer if you want an agency-focused wrapper with cleaner multi-tenant UX, a more recent pricing structure, and broadly the same upstream voice infrastructure as Voicerr at meaningfully lower flat monthly cost. Stammer is the natural landing pad for many of the agencies that left Voicerr in Q1 2026. The caveat is that Stammer is still a wrapper, which means the same upstream risk applies: if Vapi or Retell change pricing, Stammer either eats the margin or passes it through. The Voicerr hike is the precedent. See the Stammer site for current pricing.
Where Hermes fits if you outgrew both
Hermes is the operating layer for AI voice agencies, not a wrapper on top of someone else's voice infrastructure pricing. We control the upstream economics, sign provider contracts directly, and publish flat $0.24 per minute overage as a public number that does not move when an upstream vendor changes their rate card. Pricing slots sit between the cheap-but-DIY end and the wrapper agency tiers: Starter at $149 per month for 3 workspaces, Business at $399 for 7, Agency at $699 for 20 with 2,000 included minutes pooled. For a 5-to-15-client agency that is $200 to $600 per month less than Stammer's agency tier and meaningfully less than Voicerr post-hike, with multi- tenant, native CRM, and white-label demo pages still included.
| Capability | Voicerr | Stammer | Hermes Agency |
|---|---|---|---|
| Monthly base (agency tier) | ~$997 | ~$397 | $699 |
| Per-minute overage | ~$0.20 to $0.35 | ~$0.18 to $0.30 | $0.24 flat |
| Workspaces / sub-accounts | Capped by tier | Capped by tier | 20 included |
| Native CRM | Basic | Basic + campaigns | Native contacts, pipeline, sequences |
| White-label demo pages | Yes | Yes | CNAME-bound, included |
| Controls own upstream pricing | No | No | Yes |
Related: Hermes vs Voicerr direct, Synthflow vs Voicerr, Voicerr price-hike migration playbook.
FAQ
Is Voicerr cheaper than Stammer in 2026?
Not anymore. Voicerr raised prices 7 to 10x in early 2026, taking their agency tier from roughly $97 to $997+ per month with capped minutes that previously felt unlimited. Stammer's agency tier in 2026 sits around $397 per month for the entry agency plan, with usage-based scaling on top. For a typical 5-to-15-client agency, Stammer lands cheaper today on flat monthly cost. Voicerr can still pencil out if you have very low aggregate minute usage, but most agencies that started on Voicerr have either migrated to Stammer, Assistable, Synthflow, or Hermes since the hike.
Which is better for white-labeling, Voicerr or Stammer?
Both support white-label sub-accounts. Stammer's white-label setup is more polished out of the box: custom domain CNAME, customized client portal, agency-branded billing. Voicerr's white-label was a major selling point pre-2026 and the product itself remains capable, but the brand has lost goodwill since the price hike. For new agencies starting in 2026, Stammer's white-label experience is the smoother path. For agencies already on Voicerr with active client deployments, the migration cost is real and worth weighing against the higher monthly bill.
Which has better multi-tenant features, Voicerr or Stammer?
Stammer has the cleaner sub-account model in 2026, with explicit per-client workspaces, per-client billing roll-ups, and per-client agent libraries. Voicerr's multi-tenant has more accumulated tech debt because it grew organically from a single-tenant product. That said, both support the core agency workflow of: bring on a new client, spin up their workspace, deploy agents under your brand, bill them, and roll the margin up to your agency dashboard. The gap between them on pure multi-tenant capability is smaller than the gap on pricing posture.
What happened with the Voicerr price hike?
Voicerr raised prices roughly 7 to 10x overnight in early 2026, with limited grandfathering for existing customers. The platform itself did not get 7x better at the same time. The hike triggered a meaningful exodus of small-and-mid-sized agencies to Stammer, Assistable, Synthflow, and Hermes. The strategic read: Voicerr's upstream voice infra costs (Vapi or Retell pass-through) went up, and they passed that through plus a margin grab. The economic read for agencies: if your upstream vendor controls your pricing, you control nothing. That is the case for wrappers in general and the Voicerr hike was the textbook example.
Does Hermes replace Voicerr or Stammer, or work alongside them?
Hermes is the agency operating layer. We use Retell-class voice infrastructure underneath but expose it through one workspace per client, with native CRM, transparent voice overage at $0.24 per minute flat, white-label demo pages on your domain, and pricing slots that sit cleaner than either Voicerr's post-hike pricing or Stammer's tier structure for sub-15-client agencies. Agencies migrating off Voicerr in 2026 are a meaningful slice of our beta. If you are already happy on Stammer and your unit economics work, you do not need Hermes today. If you are sub-15 clients and want lower flat cost plus more direct vendor control, that is where we fit.
Wrappers inherit upstream risk. Hermes controls its own economics.
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