compile_events · live
awaiting first compile…

Financial Reasoning
Infrastructure.

Every compile produces a signed, re-derivable receipt — anyone holding your model can re-run it and get the same receipt. No trust in us required. That's computation provenance. Flatland is the infrastructure that makes it structural.
Your model, your receipt. We hold neither.
Financial models as code. · Typed IR. · Deterministic compile. · Client-owned custody.
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live · system pulse0 compiles · 0 in last window
bit-identical

Same IR always produces the same outputs. Deterministic, recomputable.

determinism test
MCP+ REST

Both protocols, day one. Your agent calls the same engine your CFO can curl.

api reference

Not a spreadsheet.
Not a chatbot.
A typed compilation layer.

Spaceland · consumer hardware + subscription · fictitious demo model

compiling the model…

The automation layer is done.
The model layer is the last frontier.
Flatland is that layer.

Specimen · what every compile produces
Live model · Three-Statement Model — typed, compiled, re-derivable
Three-Statement Modelcompiled · 24 drivers · 4/4 assertions · 1ms

Inputs · typed assumptions

Starting ARR$2.40M
Monthly ARR growth rate8.0%
Monthly gross churn rate1.5%
COGS as % of revenue22.0%
Gross margin target78.0%
Monthly operating expenses (base)$180,000
OpEx growth per quarter4.0%
D&A monthly$8,000
Cash on hand (opening)$4.20M
Accounts receivable days30
Accounts payable days45

Outputs · compiled in topological order

Ending ARR$2.56M
Monthly revenue$213,000
Monthly COGS$46,860
Gross profit$166,140
Gross margin78.0%
EBITDA$-13,860
EBIT$-21,860
Accounts receivable$213,000
Accounts payable$70,290
Cash from operations$-148,570
Ending cash$4.05M
Net monthly burn$13,860
Runway292.3 mo

Assertions · guardrails

Gross margin ≥ 45% — SaaS floorgross_margin >= 0.45
Cash never goes negativeending_cash >= 0
Runway ≥ 12 monthsrunway_months >= 12
Net positive growthmonthly_arr > 2400000
content hash 3faa5866a910 · re-derivable from this IR · client-owned
Same IR → same outputs. Deterministic, re-derivable.Fork this in the Workshop →

Every compile produces this. Typed assumptions, an explicit dependency graph, assertions that catch bad structure, and a re-derivable content hash you can recompute independently. This is Financial Reasoning Infrastructure as a visual. The Excel ships too — but this is the source of truth.

See the institutional Excel proof →
Four ways inpick the surface that fits the work

Quantitative reasoning,
compiled.

Flatland · index of everything
© 2026 Flatland · Financial Reasoning Infrastructure · live pulse · awaiting first compile