Billing & usage credits

VoiceThere bills real-time voice and agent workloads with usage credits. Credits are a single balance unit across voice time, data sessions, speech services, conversation history, and agent logs. Totals in the dashboard and API are shown to one decimal place (for example 3.3 credits).

How usage is measured

Each billable activity converts to credits using fixed rates. Period totals use raw quantities first — we do not round up per session before summing.

Activity	Unit	Rate
Voice agent time	per minute	2 credits
Data agent time	per minute	0.5 credits
Speech-to-text (local Sherpa)	per 1,000 characters	1 credit
Text-to-speech (local Sherpa)	per minute of audio	3 credits
Conversation history (overage)	per conversation	1 credit
Agent log overage	per 1,000 entries	1 credit

Speech-to-text and text-to-speech rows apply when your agent uses in-runner local Sherpa. Conversation and agent-log rows apply only after your plan's included quotas for those features.

Subscriptions & included credits

A paid subscription is a seat you assign to exactly one projectat a time. That project receives a monthly included credit allotment based on the seat's plan tier. Included credits refresh at the start of each billing period (aligned with your Stripe subscription or, on the free tier, monthly anniversary from signup).

Plan	Included credits / period
Free	5,000 credits
Budget	10,000 credits
Budget+	20,000 credits
Advanced	75,000 credits
Ultimate	175,000 credits

Unused included credits do not roll over to the next billing period. When a new period starts, included balance resets to the full allotment for that tier.

If you move a seat to a different project, the remaining included balance moves with the seat. Credit packs (below) stay on the project that purchased them.

Manage seats under Organization → Subscriptions. Assign or reassign a seat to a project from the subscription detail view.

Credit packs

Credit packs are one-time purchases tied to a specific project. They add credits on top of subscription included balance and persist across billing periods until used.

Packs burn in FIFO order (oldest pack first).
Buy packs from Project → Metrics or from Subscriptions (select the target project first).

Pack	Credits granted
$10 pack	11500.0 credits
$25 pack	32500.0 credits
$50 pack	67500.0 credits

Burn order

When usage is settled, credits are consumed in this order:

Included — subscription allotment for the assigned project
Credit packs — oldest pack first (FIFO)
Metered overage — on-demand usage billed through Stripe (paid tiers with metered usage enabled)
Hard-stop — new sessions and certain operations are blocked when no credits remain and your organization or project budget does not allow further spend

On the free tier, there is no metered overage — when included and pack credits are exhausted, usage stops until the next period or you add packs / upgrade.

Organization & project budgets

Spend caps are organization-authoritative. An optional organization budget limits total metered cash spend for the month. You can set a lower per-project budget, but a project cap cannot exceed the org cap.

Configure budgets in Organization → Settings.
Email alerts can fire at 80%, 90%, and 100% of the org budget (toggle per threshold).
When a budget is reached, affected projects hard-stop even if subscription included credits remain (included credits do not bypass a spend cap).

Cash pricing

Checkout and invoices use live Stripe Price amounts (including metered overage when STRIPE_PRICE_USAGE_CREDIT_OVERAGE is configured). List reference rates for implied pack value and metered fallback:

USD: $0.00125 per credit (primary catalog currency)
EUR: €0.001 per credit

Subscription plan prices, pack bonuses, and example session costs are on the pricing page.