6sense vs Grammarly

By valuation, Grammarly is the larger company at $13B versus $5.2B — a 2.5x difference. Size can also be measured by team: 6sense employs 1500 people while Grammarly has 2500 employees.

Grammarly has raised more in total funding at $545M, compared to 6sense's $426M — a gap of $119M. Combined, the two companies have completed 8 known funding rounds.

Grammarly leads with an Awaira Score of 88/100, while 6sense sits at 80/100. That 8-point gap reflects real differences in funding, scale, and traction — it's not a vanity metric.

6sense was founded by Amanda Kahlow in 2013. Grammarly was founded by Alex Shevchenko in 2009. Visit each company's profile on Awaira for a full founder biography.

6sense: 6sense is an enterprise artificial intelligence platform that uses predictive analytics and machine learning to identify and engage high-value sales opportunities. Founded in 2013, the company develops software that analyzes buyer behavior data, intent signals, and firmographic information to help B2B sales and marketing teams prioritize prospects and optimize revenue generation. The platform integrates with existing CRM systems and sales infrastructure to deliver insights about anonymous web visitors and purchasing intent before companies enter formal buying processes. 6sense operates in the competitive revenue intelligence and account-based marketing space, alongside competitors like Demandbase and ZoomInfo. The company utilizes first-party data collection, third-party data partnerships, and proprietary machine learning models to power its core functionality. Its customer base spans mid-market to enterprise organizations across technology, financial services, and other B2B sectors. With a valuation of $5.2 billion and $426 million in total funding as of its Series E stage, 6sense has achieved significant growth since inception. The company positions itself at the intersection of sales acceleration, marketing automation, and artificial intelligence, addressing the challenge of identifying qualified prospects in complex B2B buying cycles where multiple stakeholders influence purchasing decisions. 6sense combines anonymous web visitor tracking with AI-driven intent detection to help enterprise sales teams identify buying signals before traditional sales engagement. Grammarly: Grammarly is an AI-powered writing assistance platform founded in 2009 that provides real-time grammar, spelling, punctuation, and style corrections across digital communication channels. The company offers both consumer and enterprise products, including browser extensions, desktop applications, and web-based editors that integrate with email clients, messaging platforms, and document editors like Google Docs and Microsoft Office. The platform uses machine learning and natural language processing to analyze writing for clarity, engagement, and delivery. Beyond basic grammar, Grammarly detects tone issues, provides vocabulary suggestions, and offers plagiarism detection in premium tiers. The enterprise version, Grammarly Business, targets organizations seeking to standardize communication quality across teams. As of recent valuations, Grammarly reached a $13.0 billion valuation with $545 million in total funding, positioning it as one of the most heavily funded AI writing tools. The company competes with tools like Microsoft Editor and emerging AI writing assistants powered by large language models. Grammarly serves millions of users globally, including students, professionals, and corporate teams. The platform's growth has accelerated with increasing demand for workplace writing tools and AI-assisted productivity software. The company remains privately held. Its competitive advantage lies in its large user base generating training data and its focused specialization in writing assistance. Grammarly's $13B valuation reflects the substantial market demand for AI-powered writing assistance tools integrated into everyday digital workflows.

Grammarly got there first, launching in 2009 — that's 4 years of extra runway. 6sense didn't arrive until 2013. In AI, that kind of head start means more training data, deeper customer relationships, and a bigger talent moat.

6sense has about 1500 employees; Grammarly has about 2500. A bigger team usually means more revenue or heavier VC backing, but in AI, small teams can build at massive scale.

Yes — they're direct rivals. Both 6sense and Grammarly compete in Enterprise AI, targeting many of the same buyers. If you're evaluating one, you should be looking at the other.