AI writing assistants that don’t train on your data (2026)
Which AI writing, grammar and marketing-copy tools train on the text you paste in — and which keep your drafts and documents out of training?
2 of 5 don't train by default · 1 depend on your plan · 2 train by default · last verified 2026-06-01 · how we verify
| # | Tool | Trains on your data? | Opt-out | Zero-retention / DPA | Plan-tier nuance | Verified |
|---|---|---|---|---|---|---|
| 1 | Google NotebookLMGoogle | Doesn’t train on your data | N/A — no training | ZDR / DPA on enterprise | No training on any tier (Consumer (personal Google account), Workspace / Education / Enterprise). | 2026-06-01 |
| 2 | Copy.aiCopy.ai | Doesn’t train on your data | N/A — no training | Retention not documented | No training on any tier (All plans (default)). | 2026-06-01 |
| 3 | GrammarlyGrammarly | Depends on your plan | Opt-out | ZDR / DPA on enterprise | Trains on Free / Premium / Pro (individual), Team / Business; not on Third-party LLM providers. | 2026-05-31 |
| 4 | JasperJasper | Trains by default | Opt-out | ZDR / DPA on enterprise | Trains on every tier (Standard (Terms of Service default), EU / UK users). | 2026-06-01 |
| 5 | QuillBotQuillBot (Course Hero/Learneo) | Trains by default | Opt-out | No zero-retention option | Trains on Individual / Free / Premium; not on Team Plan. | 2026-06-01 |
Ranked by privacy posture — tools that never train on your data first. Tap any tool for the per-tier breakdown, opt-out steps and dated sources.
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These verdicts are cited public information, not legal or compliance advice. Whether a tool trains on your data — and any zero-retention or DPA option — can depend on your plan, region and contract. Confirm current terms with each vendor before sending confidential or proprietary data.