Bonfire Terminal vs Grammarly
Grammarly is a cloud-hosted writing assistant (~30M daily users), freemium at $0-$30/user/mo, with no training on Business or Enterprise data, across OpenAI, Anthropic and Google. Bonfire Terminal is a broader sovereign agent instead: on-device execution, bring-your-own-key at cost with no markup, one perpetual license.
Bonfire Terminal vs Grammarly: the 16-factor comparison
| Rating factor | Grammarly | Bonfire Terminal |
|---|---|---|
| Category | Other | AI Terminal / Local Agent |
| Popularity | ~30M daily users | Growing · indie |
| Hosting architecture | Cloud-Hosted | On-Device Local |
| Licensing model | Freemium | One-Time Perpetual |
| Data / training policy | No training on Business/Enterprise data | Fully local — nothing leaves device |
| Offline capability | No | Yes |
| Pricing tier range | $0-$30/user/mo | One-time license |
| Execution unit cost | Subscription | Unlimited Local Compute |
| API-key markup | N/A | No — BYO key at cost |
| Supported LLM providers | OpenAI;Anthropic;Google | OpenAI; Anthropic; Google; Local; Any |
| Auth / permission types | Username-Password;SSO;OAuth | API Key; Local/None |
| Phone / messaging bridges | None | Telegram; WhatsApp |
| Speech recognition engine | None | Whisper (local) |
| Local media processing | No | Yes |
| Sovereign score | 42 / 100 | 93 / 100 |
The sovereignty gap
Where Grammarly lands on each weighted pillar (its bar) — the red marker is Bonfire's score. Auto-derived from the 16 factors above.
Which should you choose?
Choose Grammarly if…
Choose Grammarly if you want real-time grammar, tone, and writing suggestions embedded across your apps and browser everywhere you type.
Choose Bonfire Terminal if…
Choose Bonfire Terminal if you want a private on-device AI agent rather than a cloud writing-assistant layered over your typing.
Bonfire Terminal vs Grammarly: FAQ
Is Grammarly private?
Grammarly avoids training on Business and Enterprise data, but it is cloud-hosted and processes your text on its servers, and free-tier terms differ. Bonfire Terminal runs on-device, so nothing you write leaves your machine.
Is Bonfire Terminal cheaper than Grammarly?
Grammarly charges up to $30 per user per month. Bonfire Terminal is a one-time perpetual license with at-cost BYO-key usage, so recurring per-seat writing fees are replaced by a single purchase.
Can Bonfire Terminal replace Grammarly?
Bonfire Terminal can review and rewrite text through your chosen model, but Grammarly's real-time inline suggestions across every app are its core. If that always-on typing layer matters, weigh it before switching.
What can Bonfire Terminal do that Grammarly can't?
Bonfire Terminal runs on-device with Telegram and WhatsApp bridges, local Whisper speech, and local media processing as a full agent. Grammarly is a cloud writing layer with none of those and no offline mode.
How do I switch from Grammarly to Bonfire Terminal?
Install Bonfire Terminal and add your provider key, then run writing and editing prompts locally. You lose inline everywhere-suggestions but gain on-device privacy and a one-time license. There is no lock-in either: your data stays local and you own the license outright.
Does Bonfire Terminal work offline vs Grammarly?
Grammarly has no offline capability and depends on its cloud. Bonfire Terminal runs on-device with local Whisper and media processing, so it keeps working without a connection. Local Whisper transcription and media processing keep running with no network connection at all.