AI assistants: SaaS ROI 2026
Copilot, embedded LLMs, AI agents. M365 Copilot, Google Gemini for Workspace, Notion AI, Glean.
Microsoft 365 Copilot TEI (Forrester) — 9 hr/month per user. McKinsey independent baseline: avg 5.4% of work hours saved (~2.2 hr/wk)..
What this means for your buy decision
AI assistant TEIs trend lower than other SaaS TEIs (116% vs 300-500%) because measurement is harder and adoption ramps are slower. St. Louis Fed independent data: +1.1% US productivity gain from GenAI by H2 2024 — a useful sanity check on individual TEI claims. Year-2 price escalation runs 10-25% on AI tools (above 5-9% standard SaaS).
Year-2 price escalation
Typical Year-2 SaaS price escalation in this category: 15%. Account for this when modelling multi-year NPV — the calculator does this automatically using a 10% discount rate.
Source
↗ https://tei.forrester.com/go/microsoft/M365Copilot/Verified 2026-06-02.