We are looking at upgrading from ad-hoc to startup, however we're confused on the overage pricing. Our current cost-per-minute using adhoc is $0.12/min, but the overage rate for startup is $0.16/min. We're not really sure where that gap comes in - we understand there are extra concurrency lines etc but we're not quite sure why the overage would be that much higher.

I couldn't find enough info to fully answer your question about how Ad-Hoc and Startup pricing (and overage rates) are determined, especially regarding why the Startup overage is higher than your current Ad-Hoc rate. I've escalated this to a human on the team who can give you a detailed answer. Hang tight—they'll get back to you soon! If you want to check out general info on pricing or billing, you can find it here: [Vapi Pricing](https://docs.vapi.ai/pricing) and [Billing Page](https://dashboard.vapi.ai/org/billing).

The key insight you're missing is that the startup plan gives you 7,500 bundled minutes at a much better effective rate before any overage kicks in, plus significant additional benefits. Current Ad-hoc vs Startup Cost Analysis: Ad-hoc Infra: \- $0 monthly fee \- You pay $0.12/min for ALL minutes used \- 10 concurrent calls maximum Startup Plan: \- $1,000 monthly fee \- 7,500 bundled minutes included = effective rate of $0.133/minute ($1,000 ÷ 7,500) \- Overage rate of $0.16/min only applies AFTER you use all 7,500 bundled minutes \- 100 concurrent calls (10x more than ad-hoc) When Startup Becomes Cost-Effective: If you're using around 7,500+ minutes per month, startup becomes more economical: \- 7,500 minutes on ad-hoc: 7,500 × $0.12 = $900/month \- 7,500 minutes on startup: $1,000/month (bundled) The break-even point is around 8,333 minutes per month ($1,000 ÷ $0.12). Additional Startup Benefits: \- 10x concurrency increase (10 → 100 concurrent calls) \- Predictable monthly costs for your first 7,500 minutes \- Better support tier