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Pricing

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Features

Resources

Solutions

Developers

Pricing

Talk to Us

Features

Resources

Solutions

Developers

Pricing

Talk to Us

VOICE AI BILLING

The Billing Engine Behind the Fastest Growing Voice AI Companies

Flexprice meters every minute, conversation, and outcome in real time then handles credits, wallets, and invoicing so your team can focus on the product, not the billing code.

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Trusted by 100+ AI and Agentic Teams

Why billing is the hardest infrastructure problem in Voice AI

Most billing tools were built for SaaS subscriptions. Voice AI has a completely different set of challenges.

You don't know your real margins

Every call hits your STT, LLM, TTS, and telephony provider and each with their own unit and rate. You're charging your customer one price but you won't know what that call actually cost you until month-end reconciliation. By then it's too late to fix.

Per-minute metering accuracy

A voice call isn't an API call. It runs for unpredictable durations, spans multiple services with different clocks, and your metering has to decide what's billable in real time not after the fact.

Credits and prepaid balances are deceptively hard

Selling prepaid minutes or credit packs sounds simple. Then you need real-time balance checks, expiration rules, overdraw prevention under concurrency, and overage billing all without blocking the call.

Every customer segment wants different pricing

Self-serve wants per-minute. Enterprise wants committed volumes with overage rates. Agencies want per-conversation. You need all three running simultaneously not three billing systems duct-taped together.

Built for every type of voice AI company

Whether you're powering the infrastructure, running the platform, or building the end product, your billing challenges are different. Flexprice handles all of them.

Infrastructure

Orchestration

Enterprise

Legacy/SaaS

Go SDK example for sending customer usage events to Flexprice’s billing and metering API.

Meter at any scale without dropping a single event

Bulk event APIs and Kafka collectors that keep up with your throughput.
Tiered and volume pricing that applies automatically.
Credit grants for annual commits with real-time balance tracking.
Integrates with Stripe, Razorpay, or Chargebee and other payment gateaways.

Before Flexprice, billing required one developer to spend 20-30% of their daily bandwidth. After adopting Flexprice, no developer is dedicated to billing at all.

- Shubhendu Shishir, Head of Engg

Infrastructure

Orchestration

Enterprise

Legacy/SaaS

Meter at any scale without dropping a single event

Bulk event APIs and Kafka collectors that keep up with your throughput.
Tiered and volume pricing that applies automatically.
Credit grants for annual commits with real-time balance tracking.
Integrates with Stripe, Razorpay, or Chargebee and other payment gateaways.

Before Flexprice, billing required one developer to spend 20-30% of their daily bandwidth. After adopting Flexprice, no developer is dedicated to billing at all.

Shubhendu Shishir, Head of Engg

From first event to first invoice in hours

Three simple steps. No billing expertise required.

STEP 1

Meter voice events

Send events (call start, call end, minutes used, tokens consumed) via our API or SDK. One endpoint, any event shape.

STEP 2

Configure your pricing model

Set up per-minute, credit-based, tiered, or hybrid pricing in the dashboard. No code changes needed to switch models later.

STEP 3

Invoice automatically

Flexprice generates line-item invoices showing exactly what your customer consumed. Real-time dashboards keep them in the loop.

STEP 1

Meter voice events

Send events (call start, call end, minutes used, tokens consumed) via our API or SDK. One endpoint, any event shape.

STEP 2

Configure your pricing model

Set up per-minute, credit-based, tiered, or hybrid pricing in the dashboard. No code changes needed to switch models later.

STEP 3

Invoice automatically

Flexprice generates line-item invoices showing exactly what your customer consumed. Real-time dashboards keep them in the loop.

STEP 1

Meter voice events

Send events (call start, call end, minutes used, tokens consumed) via our API or SDK. One endpoint, any event shape.

STEP 2

Configure your pricing model

Set up per-minute, credit-based, tiered, or hybrid pricing in the dashboard. No code changes needed to switch models later.

STEP 3

Invoice automatically

Flexprice generates line-item invoices showing exactly what your customer consumed. Real-time dashboards keep them in the loop.

How top teams use flexprice

"Flexprice lets us focus on the core business instead of building billing as a second product."

Shubhendu Shishir
Head of Engineering, Simplismart

6x

Faster Pricing Iteration

"The core implementation was completed in around 2 weeks. The rest was just us finishing the complete migration."

Kush Daga
Founding Engineer, Segwise

100%

Visibility on Cust Credit Usage

Why voice AI teams choose Flexprice

Capability

Other Billing Providers

Per-minute metering

Native, real-time

Custom usage records

Multi-component events

Single API call

Not supported

Credits & wallets

Built-in ledger

Third-party addon

Pricing model changes

No-code, instant

Engineering migration

Open source

Yes (GitHub)

Time to implement

Hours

Weeks

Ready to transform your billing infrastructure?

If you're spending valuable engineering time on billing instead of your core product or if you need to scale complex usage-based pricing without the overhead, Flexprice can help.