Grammarly is an English writing assistant founded in 2009 in San Francisco, USA, serving roughly 30 million daily active users with grammar checking, tone optimization and generative AI writing (GrammarlyGO), from a free tier to a ~$12/month Premium plan.
Copy.ai is a US AI copywriting and content workflow platform founded in 2020. The free plan offers 2,000 words per month, supporting 25+ languages and 90+ templates for marketing teams' content generation, approval and automation pipelines.
Kobold is an open-source AI story creation and local LLM inference project; its KoboldCpp engine was open-sourced in 2023, supporting GGUF models locally and a cloud API, favored by creative writers and roleplay enthusiasts.
AI21 Labs is a generative AI unicorn founded in 2017 in Tel Aviv, Israel, valued at about $1.4 billion. Its Jamba 1.5 open models use an SSM-Transformer hybrid architecture, alongside the Wordtune writing assistant and the AI21 Studio enterprise model platform.
Surfer SEO is a Polish AI content optimization and search visibility platform founded in Wrocław in 2017, used daily by 150,000+ professionals, where Content Score makes pages 2x more likely to reach the Top 10 and visibility spans both Google and AI search.
StoryChief is a Belgian content marketing and multichannel distribution platform founded in Ghent in 2017, serving 1000+ companies across 30 countries, where customers save an average of 20 hours per week on content operations, a one-stop collaboration hub from strategy to distribution.
Founded by May Habib in 2020 and headquartered in San Francisco, Writer is an enterprise generative AI platform offering proprietary Palmyra models, an AI writing assistant, brand knowledge base and compliance rule engine for regulated industries.
Jasper is an AI marketing content platform founded in 2021 in Austin, United States, built on Brand Voice, 50+ marketing templates and Campaigns multi-step flows to help marketing teams produce blogs, ads and social content at scale.