Grammarly vs Writer

Grammarly is an AI writing assistant that checks grammar, spelling, punctuation, and style in real time across browsers, desktop apps, and mobile keyboards. It integrates directly into Gmail, Google Docs, Microsoft Word, Slack, and thousands of other websites via a browser extension. Beyond basic correctness, Grammarly analyzes tone and clarity, suggesting rewrites to make writing more concise, confident, or friendly depending on the context and audience selected by the user. GrammarlyGO adds generative AI features for drafting emails, replying to messages, and rewriting passages on demand, while Grammarly Business adds brand style guides and analytics for teams that need consistent written communication across an organization.

Writer is a full-stack enterprise AI platform built around its own family of large language models, called Palmyra, rather than reselling third-party models. It combines a Knowledge Graph for graph-based retrieval with an application layer of chat interfaces, templates, no-code apps, and prebuilt agent libraries so non-technical teams can create governed AI workflows. The platform's core interface, the WRITER Agent, turns multi-step work into repeatable, governed workflows called Playbooks that are grounded in a company's own documents and data. Writer positions data residency, zero data retention, and domain-specific models for regulated industries like finance and healthcare as core differentiators, and serves more than 250 enterprise customers including Accenture, Intuit, and Uber.

• Works across almost every app via browser extension
• Good tone and clarity suggestions beyond basic grammar
• GrammarlyGO speeds up drafting
• Free tier is genuinely useful

• Owns its own LLMs (Palmyra) end-to-end, which the company pitches as an advantage for data governance and cost control.
• Knowledge Graph grounding reduces hallucination risk by tying output to a company's real documents.
• Playbooks make it easier to standardize AI-assisted workflows across a large team rather than relying on ad hoc prompting.
• Domain-specific models for finance and healthcare suit regulated industries.

• Premium features behind a subscription
• Occasional over-aggressive suggestions
• Privacy concerns for some sensitive writing contexts

• No mid-tier plan exists between Starter and Enterprise, and Enterprise pricing requires a sales conversation.
• Starter plan pricing (around $39/user/month) is aimed at teams, not casual individual writers.
• API usage and Knowledge Graph storage incur separate token- and data-based costs on top of the subscription.