AI Compute Costs Threaten B2B SaaS Margins: How CFOs Are Fighting Back

Published: October 3, 2026 • Reading Time: 6 min read • Reporting: Intelligence Division

The shift to generative AI has upended traditional flat-rate B2B SaaS pricing due to highly variable compute and token costs. Vayu is launching an observability platform to help enterprise CFOs track and eliminate margin-eroding customer accounts.

The traditional B2B SaaS business model was built on predictable, near-zero marginal costs, allowing for lucrative gross margins. However, the integration of Large Language Models (LLMs) has introduced variable, usage-based Cost of Goods Sold (COGS) via token consumption, compute resources, and third-party API calls. Under legacy flat-rate enterprise agreements, high-volume users can quickly turn profitable customer accounts into net-negative liabilities. Vayu addresses this structural vulnerability by providing real-time cost tracking at the individual customer level. By attributing LLM and infrastructure costs directly to specific customer accounts, the platform enables CFOs to restructure pricing models, transition to usage-based billing, or renegotiate unprofitable contracts. This shift highlights a broader industry movement toward unit-economic observability in the generative AI era, forcing enterprise software vendors to align their pricing with actual underlying computational consumption.