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Recovery of past CAM overcharges depends on your specific lease terms, including any audit rights deadlines or ‘binding and conclusive’ provisions, and on applicable state law.

State statute of limitations periods apply to written contracts and range from 3 to 10 years. Your actual lookback window may be shorter based on your lease.

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  4. /CAMAudit vs ChatGPT

Comparison

CAMAudit vs ChatGPT

Last updated: April 2026

General-purpose AI chatbot, also applies to Gemini, Claude, Copilot, and Perplexity. See how CAMAudit stacks up for commercial CAM reconciliation auditing.

By Angel Campa, Founder

TL;DR

  • +CAMAudit: $79 flat fee, results in under 15 minutes, 14 forensic detection rules.
  • -ChatGPT: Free to $200/mo subscription, minutes (manual prompt iteration), general text analysis and ad-hoc math, no deterministic rules.
  • iChatGPT uses floating-point approximations. CAMAudit uses Python Decimal arithmetic: every overcharge amount is exact to the penny with an auditable math proof. CAM cap calculations require tracking running balances across multiple years; ChatGPT has no persistent state between sessions. And when two detection rules flag the same line item, CAMAudit's reconciliation engine prevents double-counting. ChatGPT has no concept of inter-rule conflicts.

Bottom line

CAMAudit wins for CAM auditing

CAMAudit is the better fit for any tenant who needs accurate, defensible overcharge numbers. ChatGPT can summarize lease language, but no general-purpose AI tool can replace a forensic audit engine with deterministic math, multi-year state tracking, and double-counting reconciliation.

$79

flat fee

<15 min

to findings

14

detection rules

Time to results

CAMAuditUnder 15 minutes
ChatGPTMinutes (manual prompt iteration)

CAMAudit processes your documents and runs 14 detection rules in under 15 minutes. ChatGPT takes minutes (manual prompt iteration).

Feature Comparison

FeatureCAMAuditChatGPT
Price
$79 flat fee, no contingency
Free to $200/mo subscription
Time to findings
Under 15 minutes
Minutes (manual prompt iteration)
Detection rules
14 forensic detection rules
General text analysis and ad-hoc math, no deterministic rules
Dollar amounts per finding
Yes, every finding quantified
No
Dispute letter draft
Included
Not included
Free audit available
Free scan (full pipeline, blurred report)
Yes

ROI on a $20,000 overcharge recovery

Estimated net recovery after fees, assuming full recovery

CAMAudit

~$19,921

after $79 flat fee

ChatGPT

Not applicable: no structured findings or overcharge quantification

Choose CAMAudit if

  • ✓You need to find CAM overcharges, not just organize lease data.
  • ✓You want quantified findings and the best recovery economics from a flat-fee audit.

Choose ChatGPT if

  • •You only need a general summary of your lease language or want to understand CAM terminology before running a real audit.
  • •You are doing initial research and not yet ready to review a formal findings report.

Overcharge detection

ChatGPT uses floating-point approximations. CAMAudit uses Python Decimal arithmetic: every overcharge amount is exact to the penny with an auditable math proof. CAM cap calculations require tracking running balances across multiple years; ChatGPT has no persistent state between sessions. And when two detection rules flag the same line item, CAMAudit's reconciliation engine prevents double-counting. ChatGPT has no concept of inter-rule conflicts.

ROI and fee drag

ChatGPT is free or low-cost, but it produces nothing a landlord will negotiate against: no structured findings report findings report

Implementation burden

ChatGPT requires manually pasting text, writing the right prompts, verifying every calculation, and formatting your own dispute letter. CAMAudit handles OCR, extraction, 14-rule detection, and dispute letter generation in one upload, in under 15 minutes.

Why tenants choose CAMAudit

  • ✓Deterministic Decimal arithmetic: every dollar amount is exact to the penny with an auditable math proof
  • ✓14 hard-coded detection rules that run the same way every time, not prompt-dependent
  • ✓Multi-year state tracking for cumulative and compounding CAM cap calculations
  • ✓AWS Textract OCR pipeline: processes PDFs, scanned images, and spreadsheets directly
  • ✓Dispute letter draft with 50-state legal citations and tone selection from $79

ChatGPT strengths

  • •Free tier available with no signup friction
  • •Can summarize lease language and explain CAM terminology
  • •Available 24/7 with no onboarding or setup
  • •Good for initial research before running a real audit

ChatGPT limitations

  • •Floating-point math cannot produce penny-accurate financial calculations
  • •No persistent state. Cannot track cumulative CAM cap balances across multiple years
  • •No double-counting reconciliation. Will count the same overcharge under multiple categories
  • •No structured extraction schema. Results vary with each prompt, no consistency guarantee
  • •Cannot run purpose-built OCR on scanned PDFs with complex tables
  • •No 50-state legal citation database. May cite outdated or incorrect statutes
  • •No confidence scoring or sanity gates. Generates findings regardless of data quality

ChatGPT key features

  • •General text summarization and Q&A
  • •Document summarization (paid tiers)
  • •Ad-hoc math on pasted numbers
  • •Conversational clause explanation

Notable absences in ChatGPT

  • ✗No purpose-built CAM overcharge detection rules
  • ✗No deterministic math engine. Floating-point approximations only
  • ✗No multi-year state tracking for cap calculations
  • ✗No dispute letter with state-specific legal citations
  • ✗No confidence scoring or sanity gates
  • ✗No double-counting reconciliation across detection rules
  • ✗No structured audit report with per-finding dollar amounts

What users say about ChatGPT

Search presence
Dominates general AI search; no presence for CAM audit queries
Reviews
Widely praised for general tasks; no established use case for forensic CAM auditing
Common complaints
Math errors on financial calculations, hallucinated legal citations, inconsistent results across sessions, no audit trail or reproducibility

This page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.

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Frequently Asked Questions

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Related Resources

ResourcesSwitching GuidesHow It WorksDetection RulesToolsFree CAM Audit ToolsResourcesCAM Audit Scenarios

Need to extract lease terms before your audit?

A CAM audit is only as accurate as your lease data. lextract.io extracts 126 structured fields from any commercial lease PDF: CAM definitions, pro-rata share, caps, base year, and audit rights. So you have the exact terms your landlord is supposed to follow.

Go to lextract.io
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