---
title: "QuotaStack vs Orb"
description: "An honest comparison of QuotaStack and Orb for usage-based billing — pricing model, credit primitives, metering depth, and who each is best for."
order: 3
competitor: "Orb"
competitorUrl: "https://www.withorb.com"
---

# QuotaStack vs Orb

Orb is a developer-focused usage-based billing platform built around a query-based architecture: rather than aggregating usage counters as events arrive, Orb stores raw events immutably and calculates charges by querying that event history at billing time. This design makes late data safe, pricing changes immediate (no re-ingestion needed), and invoice audits deterministic. The platform handles usage-based, seat-based, and hybrid billing; custom SQL-defined metrics; pricing simulations; and complex enterprise contracts with backdated amendments, shared credit pools, and customer hierarchies. Customers include Vercel, Replit, Supabase, and Perplexity — growth-stage and enterprise companies with high event volumes and sophisticated pricing needs.

Orb's pricing reflects its enterprise positioning. The platform has three tiers — Core, Advanced, and Enterprise — priced based on billings (total invoice value issued through Orb) and events ingested, with a platform fee added for the Advanced and Enterprise tiers. None of these prices are published publicly; all tiers require contacting sales, and there is no self-serve signup or free tier listed on the pricing page. Orb does support prepaid credits via a ledger system with blocks, expiry dates, custom pricing units (enabling multi-currency credit pools), automatic deductions, and recurring allocations per plan. This is a powerful credit system well-suited to enterprise commit drawdown, promotional credits, and token-based pricing for AI products. It differs from QuotaStack's model in that QuotaStack treats credits, entitlements, reservations, and wallets as first-class primitives addressable directly via API rather than as ledger entries applied against usage invoices.

On agent-native docs, both products do well: Orb publishes `docs.withorb.com/llms.txt` and individual documentation pages are available at `.md` URLs — a meaningful investment in machine-readable documentation for teams building with AI editors.

The honest choice comes down to stage and go-to-market. If you are a growth-stage or enterprise company with complex usage-based pricing, high event throughput, enterprise contract requirements (Salesforce, NetSuite, backdated amendments, customer hierarchies), and can engage in a sales process, Orb is one of the most capable platforms in this space. If you are an indie developer or early-stage startup that needs credit-native billing primitives, transparent self-serve pricing, and a free tier to start — without a sales call — QuotaStack is designed for that.

## Orb vs QuotaStack

| Feature | QuotaStack | Orb |
|---|---|---|
| Pricing model | Per metered event | Based on billings (total invoice value) plus events ingested; Advanced and Enterprise tiers also include a platform fee — no public rate card, all tiers require contacting sales (as of June 2026) ([source](https://www.withorb.com/pricing)) |
| Entry / free tier | Free up to 100k events/mo, no card | No publicly listed free tier; all plans (Core, Advanced, Enterprise) require contacting sales to get started (as of June 2026) ([source](https://www.withorb.com/pricing)) |
| Pricing transparency | Public, self-serve | Not public — pricing for all tiers requires contacting sales; no self-serve signup or rate card listed (as of June 2026) ([source](https://www.withorb.com/pricing)) |
| Credit-native primitives | Yes — credits, entitlements, reservations, wallets | Prepaid credit ledger with blocks, expiry dates, custom pricing units (multi-currency credit pools), automatic deductions, and recurring allocations; does not include reservation or entitlement primitives as described in Orb's public docs ([source](https://docs.withorb.com/product-catalog/credit-systems)) |
| Metering | Yes, real-time | Yes — real-time event ingestion, hosted rollups for 1M+ events/second in production, custom SQL metrics, query-based architecture recalculates from raw events at billing time ([source](https://docs.withorb.com/overview)) |
| Self-serve vs sales-led | Self-serve | Sales-led — all plans require contacting sales; no self-serve signup advertised on the pricing or overview pages ([source](https://www.withorb.com/pricing)) |
| Open source | No (fully managed) | No public source repository found in Orb's public materials; Orb is a managed SaaS product ([source](https://www.withorb.com)) |
| Agent-native docs | Yes — .md twin on every page + llms.txt | Yes — docs.withorb.com publishes llms.txt and individual doc pages are available at .md URLs ([source](https://docs.withorb.com/llms.txt)) |
| Best for | Indie devs & startups billing usage/credits, free to start | Growth-stage and enterprise software companies (e.g. Vercel, Replit, Supabase, Perplexity) with high-volume usage-based pricing, complex enterprise contracts, and finance team workflows requiring Salesforce/NetSuite integrations |

## Choose Orb if

- You need battle-tested, high-throughput metering (1M+ events/second via hosted rollups) with custom SQL-defined billable metrics and query-based architecture that recalculates from raw events — powerful for late data and pricing iteration
- You have complex enterprise contracts — multi-year deals, backdated amendments, customer hierarchies, shared credit pools, and integrations with Salesforce and NetSuite — that Orb handles as configuration, not custom code
- Your team is growth-stage or enterprise and can engage in a sales conversation; Orb serves companies like Vercel, Replit, Supabase, and Perplexity that need best-in-class developer billing with deep finance workflows

## Choose QuotaStack if

- You want credit-native primitives (credits, entitlements, reservations, wallets) out of the box without stitching together a preview feature and a separate sales-led product
- You want to start free and self-serve with transparent, public pricing — no "contact sales" to get a plan
- You build with AI editors and want agent-native docs (.md twins on every page and an llms.txt discovery index)

## Sources

- [Orb pricing page](https://www.withorb.com/pricing)
- [Orb overview (docs)](https://docs.withorb.com/overview)
- [Orb credit systems docs](https://docs.withorb.com/product-catalog/credit-systems)
- [Orb prepaid credits docs](https://docs.withorb.com/product-catalog/prepurchase)
- [Orb metering product page](https://www.withorb.com/products/metering)
- [Orb homepage (customers and positioning)](https://www.withorb.com)
- [Orb agent-native docs (llms.txt)](https://docs.withorb.com/llms.txt)
- [Orb Series B announcement (customer list)](https://www.withorb.com/blog/series-b)