Communication & Synthesis
OpenAI's conversational AI for writing, research, coding, and everyday productivity.
From $20 / mo
Visit WebsiteInterface & Design
AI presentation and doc builder that turns a prompt or outline into a polished deck instantly.
From $15 / mo
Visit Website4-P Sovereignty Matrix
Lumen Trust Notes
ChatGPT
ChatGPT is fully cloud-based with no local processing; all inputs are handled on OpenAI servers, making data sovereignty low. Its mission centres on broadly beneficial AI, with transparent safety research and a strong free tier that democratises access. Recommended for general productivity, writing, and research — avoid sharing sensitive PII or confidential commercial data.
Gamma
Gamma runs entirely on cloud infrastructure with no local processing option. The free tier is genuinely generous with AI credits and no hard feature wall, reflecting strong access parity across users. Recommended for teams and individuals creating presentations, proposals, or reports — avoid embedding confidential financial or client data in shared Gamma decks.
Pricing
ChatGPT
From $20 / month
Gamma
From $15 / 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.