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Correcto grabs $7M to build out its 'Grammarly for Spanish'

The generative AI boom has put a spring in the step of Correcto, a Madrid-based language writing tool startup focused on Spanish speakers that's today announcing $7 million in seed funding. The round is led by London-based Octopus Ventures, with Carya Venture Partners and River Park Ventures also contributing.

The founding team began work on their idea to build a Grammarly-style auto-editing tool for correcting written Spanish at the back end of 2021 -- before generative AI tools like ChatGPT had blasted onto the scene and grabbed global attention.

Studying and working abroad led co-founders Abraham López Lee (CEO) and Ignacio Prieto Mayorga (COO) to use and appreciate tech tools like Grammarly which, they recount, helped them improve the quality of their written English. And they recount being surprised they couldn't find comparable tools for correcting Spanish grammar and syntax, even as years of living outside Spain put a bit of a dent in their own confidence at writing professionally in their mother tongue, meaning they were all the more keen for a good tool to exist. So, along with a third (technical) co-founder, CTO Antonio Triguero Noriega, they set to work on an MVP.

The early version of Correcto used rules-based natural language processing plus a proprietary data-base of Spanish phrases to power Grammarly-style auto-editing features, correcting for grammar and style in the target language. The initial launch was as a Chrome extension to test demand. They've since also launched a freemium web app -- and say they've seen 120,000 downloads (reporting some 70,000 active users) to date.

Over the period they've been building their product the competitive landscape for AI writing tools has of course shifted massively -- thanks to the rise of widely available generative AI tools. Large language models (LLMs) like OpenAI's ChatGPT and Anthropic's Claude are now freely available (at least for casual) and able to generate all sorts of written texts on demand, including writing in Spanish. So LLMs could be seen as a threat to AI auto-editing tools. If you can just get a machine to produce the text for you why do you even need an auto-editor? Don't those intermediary steps just get wiped away?

Correcto's founders reckon not, of course. Firstly they argue the quality of Spanish texts produced by LLMs mostly trained on English language inputs is just not that great. Sure they can output Spanish. But López Lee suggests that, to a native speaker, the results sound a bit like how a child would write -- which is suboptimal for the professional business users they're most focused on. (The same conviction is driving another Spanish startup we covered recently, called Clibrain, which is working on building its own foundation model fine-tuned for Spanish language inputs.)