Overview
Meridian (Longitude Labs) builds an AI-powered modeling layer for Excel and financial workflows. It provides an agentic workspace that can refresh forecasts, pull data from filings and dataroom documents, rebuild templates with new data, check for inconsistencies, and keep assumptions traceable to source cells and files. The product blends agentic AI with traditional modeling practices to produce auditable, deterministic outputs, enabling reviewers to verify logic rather than rely on opaque generations. It targets banking, private equity, real estate, and other finance teams that work in complex spreadsheets. Meridian’s goal is to help finance teams speed up repetitive spreadsheet work without sacrificing auditability, delivering faster, iterated models while maintaining clear provenance for all assumptions and calculations.
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Simplify's take
What believers are saying
- Meridian raised $17 million on February 11, 2026, at a $100 million valuation.
- TechCrunch reported $5 million in December 2025 contracts with Decagon and OffDeal.
- Meridian AI launched August 26 2026, widening use beyond core spreadsheet workflows.
What critics are saying
- Microsoft can copy Meridian's workflow inside Excel and crush distribution by 2027.
- OpenAI, Anthropic, and Google finance copilots threaten Meridian's premium pricing by 2027.
- A single model-auditing failure destroys trust with banks and halts deployments.
What makes Longitude Labs unique
- Longitude Labs' standalone IDE, not an Excel add-in, preserves audit trails.
- BlueFin, launched June 26 2026, benchmarks financial-modeling agents across 3,225 criteria.
- John Ling's team targets regulated finance with deterministic outputs and source-cell traceability.
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