Communication & Synthesis
AI writing assistant for grammar, tone, and clarity across browser, desktop, and mobile apps.
From $12 / mo
Visit WebsiteProductivity Engines
AI assistant embedded in Word, Excel, PowerPoint, Outlook, and Teams for Microsoft 365 workplaces.
From $30 / mo
Visit Website4-P Sovereignty Matrix
Lumen Trust Notes
Grammarly
Text is sent to Grammarly's cloud for analysis; enterprise plans add stronger admin and data controls, but standard use is not local-first (Privacy Low). Free tier plus accessible Premium pricing support Medium parity. Purpose is High—clear productivity value without dark-pattern lock-in for basic writing help. Provenance Low due to closed models. Fine for everyday writing; disable or avoid on highly confidential documents unless enterprise terms and settings meet your bar.
Microsoft 365 Copilot
Copilot processes prompts and organisational content in Microsoft's cloud; enterprise controls and compliance certifications exist, but there is no local-first option for standard M365 Copilot, keeping Privacy Low. Per-seat business pricing and licence prerequisites limit access parity for individuals and small teams. Purpose is High—it meaningfully accelerates real office workflows inside apps people already use. Closed models and opaque training details keep Provenance Low. Best for Microsoft-centric orgs with clear data-governance policies.
Pricing
Grammarly
From $12 / month
Microsoft 365 Copilot
From $30 / month
Disclaimer
Scores are based on publicly available information and Lumen's auditing criteria at the time of assessment. They may not reflect recent changes.
This comparison is not a legal or security audit. Read our full disclaimer.