Grammarly Review, Pricing & Alternatives (2026)

Grammarly is a writing-assistance product made by Superhuman, the company formerly known as Grammarly. The company says Grammarly was founded in 2009 and serves more than 40 million people and 50,000 organizations. On October 29, 2025, it announced a name change to Superhuman while retaining Grammarly, Coda, Mail, and Superhuman Go as products in the broader suite. Grammarly therefore remains focused on writing support rather than becoming a separate foundation-model vendor. In May 2025, the company announced $1 billion in growth financing from General Catalyst and said revenue had exceeded $700 million. It also announced Coda’s acquisition in January 2025 and an agreement to acquire Superhuman in July 2025, placing Grammarly inside a larger product family.

Grammarly works inside supported applications, websites, browsers, and documents. A typical session involves writing text, reviewing inline spelling and grammar suggestions, and applying recommendations for tone, clarity, fluency, inclusive language, or citation consistency when the plan supports those capabilities. Pro adds full-sentence rewrites, tone adjustment, plagiarism detection, and AI-generated-text detection. Team features include style guides, brand tones, knowledge sharing, snippets, and analytics, helping organizations make writing more consistent. Grammarly says the product works across more than 1 million applications and websites. Docs provides a dedicated writing space, while newer agents can help users draft, revise, research, and receive audience feedback without opening a separate application. This broad coverage is central to its everyday writing-assistance approach.

Grammarly does not identify one foundation model as the product’s underlying engine. Instead, it describes a platform combining its writing systems with proprietary and third-party AI agents. The 2025 rebrand introduced Superhuman Go, context-aware agents, and an agent store, followed by specialized writing agents in August 2025. The company’s 2026 release feed lists an AI Rewriter Agent update on January 6, an AI Detector Agent update on February 23, partner agents for Go on March 10, and expanded Authorship on April 30. Grammarly also lists Docs, paragraph rewrites in Spanish, French, Portuguese, German, and Italian, plus translation support for Mandarin, Japanese, Indonesian, and Turkish. These details describe a growing collection of writing and language capabilities rather than one disclosed model.

The Free plan costs $0 and includes spelling and grammar assistance, tone visibility, and 100 AI prompts per month. Pro costs $12 per member per month with annual billing, or $144 per member per year, provides 2,000 prompts per member each month, and supports up to 149 seats. Monthly billing costs $30 per member, while quarterly billing costs $60 per member every three months. Pro adds rewriting, tone adjustment, fluency assistance, plagiarism detection, AI-generated-text detection, and selected team features. Enterprise uses sales-based pricing and includes unlimited prompts per member, unlimited members, dedicated support, BYOK encryption, confidential mode, data loss prevention, SSO, and administrative controls. The tier structure therefore ranges from basic assistance to broader organizational governance and security.

The main limitation is the need to allow an AI service into many writing contexts. For individual accounts, Product Improvement and Training is enabled by default, although users can opt out. Microsoft Editor and Copilot fit organizations centered on Microsoft 365, while Google Docs with Gemini fits teams working mainly in Google Workspace. LanguageTool and ProWritingAid focus more narrowly on correction and style assistance. Grammarly is a strong choice for people who want correction, rewriting, tone guidance, detection features, and broad application coverage in one service. However, organizations should review account controls and content policies before using it for confidential work. Users seeking an open-source or self-hosted checker may also find Grammarly unsuitable, since the profile identifies it as neither.