AI accounting comparison
Fondo, Puzzle and Numeric all put AI on startup accounting, and they are three different kinds of product. Here is what each one is, where it fits, and where Light is the better answer, including where it is not.
Three different things get called “AI accounting”
Fondo is a bookkeeping and tax service. Its accountants close your books monthly, quarterly or annually in your accounting software and hand back financial statements, with a dashboard for cash, burn and runway on top. The AI works for the accountants, not instead of them.
Puzzle is accounting software. It is an AI-native general ledger built for US startups, where AI categorises and reconciles and a bookkeeper, yours or one of theirs, keeps control of the outcome.
Numeric is close software. It sits on top of NetSuite, QuickBooks Online, Xero or Sage Intacct and runs the checklist, reconciliations, journal entries and flux analysis that turn a ledger into a closed month. It is not a ledger.
Light is the fourth shape: an agentic accounting platform that is the ledger, with AP, AR, cards, expenses, procurement, consolidation and reporting native to it, so agents can run the work end to end. None of the four is interchangeable with the others, which is why the choice comes down to a few questions rather than a feature count.
The questions that separate them
Four questions do most of the work. Is the product the system of record, an actual general ledger, or a service or layer that works on one? Who does the accounting: a team of accountants, software you run yourself, or agents completing work inside your controls? Are cards, expenses and bill pay native, or handled through Brex, Ramp and Bill.com and synced in? And does it run entities outside the US, in currencies other than the dollar?
| Platform | System of record | Agents do the work | Multi-entity consolidation | Native cards and expenses | Bill pay from the ledger | Non-US entities and currencies |
|---|---|---|---|---|---|---|
| Fondo | ✗a service on your accounting software | ~AI paired with their accountants | ~international subsidiary support, done by their accountants | ✗bookkeeping, tax and credits only | ✗bookkeeping, tax and credits only | ~Delaware C-Corps; international subsidiaries supported |
| Puzzle | ✓ | ✓agents on the ledger; bookkeepers keep control | ~via the Joiin integration | ~via Brex, Ramp | ~via Bill.com, Ramp | ✗US entities, USD only |
| Light | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Numeric | ✗on top of NetSuite, QuickBooks Online, Xero, Sage Intacct | ~AI on the close; the ledger is your ERP | ~multi-entity close tracking, consolidated reports and intercompany reconciliation; eliminations are set up in your ERP | ✗close tool | ✗drafts and posts journal entries to NetSuite; no payments | ~whatever your ERP runs |
Based on each vendor’s own site. Each name links to its section below.
Fondo: a service, not a system
Fondo is the one of the three that is not software you operate. A CPA-led team takes ownership of bookkeeping, corporate taxes and R&D tax credits: books closed monthly, quarterly or annually by in-house accountants, Delaware franchise tax and federal and state corporate returns filed, and R&D credits of up to $500,000 a year claimed and applied to payroll tax. There is a dashboard for cash, burn and runway, a Slack channel with your accountant, and onboarding that most founders finish in under 15 minutes. It is built for Delaware C-Corp startups from pre-seed to Series B, including international founders, and supports international subsidiaries.
The trade is structural. The books live in your accounting software, the close happens on a cadence, and what comes back is a statement. Fondo is a good answer for a US startup that wants the books and the tax filings off its plate and does not want to run an accounting system at all. Light is the opposite shape: the ledger itself, with agents running the accounting continuously inside your controls, every action logged and attributable, and a dedicated implementation team and account manager included. The finance team keeps the system; the work is done for them.
The detailed comparison: Light vs Fondo.
Puzzle: AI accounting software for the US startup
Puzzle is the closest comparison in kind. It is a general ledger, described on its own site as the accounting core where agents work for you: AI categorises up to 98% of transactions, drafts financial statements, keeps cash and accrual books, automates prepaids and fixed assets, sends and reconciles invoices and handles revenue recognition, with live cash, burn and runway. It connects natively to Stripe, Brex, Mercury, Ramp, Deel, Gusto and Rippling. Software plans run from $30 to $360 a month, and a bookkeeper who reviews and closes the books can be added on top.
Its scope is deliberate. Puzzle is built for US entities with USD-only transactions. Multi-entity reporting runs through the Joiin integration, where the consolidation happens. Cards and bill pay live in Brex, Ramp and Bill.com and sync in. That is the standard US startup stack, and Puzzle serves it well.
Light draws the line differently. Cards, expenses, AP execution, procurement, consolidation and reporting are native to one ledger, so an agent follows a transaction from a receipt posted in Slack to a posted payment without a handoff, and consolidation posts as transactions happen rather than in a reporting tool. Vendor payments run on local rails in 80+ countries, and the platform is multi-entity and multi-currency by default. Tillo runs $2B of revenue across 8 entities on Light.
The detailed comparison: Light vs Puzzle.
Numeric: close management on top of your ledger
Numeric does not compete for the ledger. It is an AI close automation platform that integrates directly with NetSuite, QuickBooks Online, Xero and Sage Intacct to pull in trial balance data, then runs the close on top: a close checklist with dependencies and audit logs, account reconciliations against materiality thresholds, cash matching that automates 90%+ of bank reconciliations, journal entries drafted and posted to NetSuite in batches, flux analysis, transaction monitors and CFO-ready reports, with Numeric Intelligence surfacing bottlenecks and recurring issues. It supports multi-entity close tracking, consolidated reports across entities and intercompany reconciliation, with eliminations set up in the ERP. Plans start at $30 per user per month, with a Growth tier for teams on QuickBooks and Xero and an Enterprise tier for NetSuite.
For a team that is staying on NetSuite or Sage Intacct, that is a real improvement: the same ledger, a faster and better-controlled close. The question it cannot answer is the ledger itself. A close tool makes the month-end of a batch system run better; it does not remove the month-end. On Light there is less close to manage, because consolidation posts as transactions happen and reporting is real time with drill-down, which is how Tillo cut its month-end processing time by 76%.
The detailed comparison: Light vs Numeric.
Where Light sits
Light’s bet is that the four questions above should all have the same answer: one AI-native ledger where AP, AR, cards, expenses, procurement, consolidation and reporting are native, so agents can run work end to end across 80+ countries, and Astra learns from your data and suggests configuration changes applied in-product. That makes Light the strongest fit for multi-entity, multi-currency companies, and honestly less differentiated for a single-entity US startup that just wants a better ledger than QuickBooks or someone to file its Delaware taxes. Puzzle and Fondo are built for exactly that company. When the second entity or the second currency arrives, or spend needs to live inside the same controls as the ledger, the answer is Light. Ocean.io replaced QuickBooks and e-conomic with Light and cut its close by 60%; Lovable scales to $500M of revenue on Light with a finance team of 4.
Frequently asked questions
Is Light an alternative to Fondo?
Fondo is a service that keeps your books and files your taxes in your accounting software. Light is the accounting platform itself, with agents doing the work continuously on one ledger. A US startup that wants the books off its plate has a genuine case for Fondo. A finance team that wants a live ledger it controls, with cards, AP and consolidation native, is the case for Light.
Is Light an alternative to Puzzle?
Yes, and it is the closest comparison: both are AI-native ledgers with agents. Puzzle is built for US entities in USD, with spend in Brex or Ramp and multi-entity reporting through Joiin. Light adds native cards, expenses, AP execution and procurement, and runs multi-entity, multi-currency groups with local payment rails in 80+ countries.
Does Light replace Numeric?
Numeric runs the close on top of NetSuite, QuickBooks Online, Xero or Sage Intacct; it is not a ledger. Light is the ledger, and consolidation posts as transactions happen with real-time reporting and drill-down, so much of the reconciliation and flux work a close tool automates has less to work on.
We are a single-entity US startup. Is Light the right call?
Often not yet. Light’s strongest fit is multi-entity, multi-currency companies; Puzzle and Fondo are built for the US startup. The calculus flips when entities multiply, a second country appears, or you want spend and procurement inside the same controlled loop as the ledger.