@speak cofounder/CTO - AI language learning

San Francisco
Joined October 2009
Andrew Hsu retweeted
Introducing Live Tutor Lessons, powered by @OpenAI GPT‑Live-1: Interactive language lessons with a tutor that get you talking, listens in real time, and helps you find your words. Jump in with a question anytime. Limited rollout for English and Spanish learners. See it in action ⬇️
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Can voice AI actually get you to fluency?💡 Join us LIVE Wednesday at 4PM CST with Andrew Hsu, Co-founder & CTO, @speak — the voice-first AI language tutor that’s hit $100M ARR and 15M+ downloads. We'll see you here on X soon!📷 #AI #LanguageLearning
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A special bit of silicon valley is that everyone is willing to help each other. Back in 2015, we pinged @karpathy for AI help and (within 2 min!) he offered to meet up w/ us the next day. One of a few formative convos that led to us doing AI research and starting @speak.
Latent.Space
@latentspacepod11 Jul 2025
🆕 Personalized AI Language Education, with @adhsu, CTO of @Speak! youtube.com/watch?v=tIVKgztD… For the first time, Andrew tells the story about building the next generation of AI Language Learning, starting pre-Transformers, getting advice from @karpathy, and why they went bet hard on South Korea and on personalized, realtime, conversational fluency as the ultimate language learning goal! "It took much, much longer than we expected to build a great product and find good PMF. The first few years were very painful. And I think without this really compelling vision of the future, we would have quit."
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The day has finally come! @speak is no longer an English language learning app. You can now learn 🇪🇸 Spanish, 🇫🇷French, 🇯🇵 Japanese, 🇰🇷Korean, and 🇮🇹Italian as well! And I'm not talking about memorizing vocab in a dopamine machine, I'm talking about good old fashioned spoken fluency.
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Fun fact: @speak has 65% brand recognition in South Korea and close to 10% of the population has used us to improve their English fluency. Was great talking to @bquazz on how we got our start there!
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📈 @speak
Here's what happened to that startup's revenue graph in the next year (in blue).
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“We’re really an AI native company." Speak CEO @connorzwick explains how his app uses #AI to get language learners talking! Plus, their growing presence in East Asia, and partnership with @OpenAI's startup fund.
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Andrew Hsu retweeted
These guys were among the earliest of all the startups we've funded to understand what AI was going to make possible, and they have executed perfectly on that early insight.
1/ Excited to announce Speak has raised a $78m Series C from @Accel at a $1b valuation! It' a huge milestone for us and continued validation of our founding idea: AI would fundamentally transform learning. 8 years later, we’re well on our way and believe this more than ever. 🧵
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OpenAI-backed Speak raises $78M at $1B valuation to help users learn languages by talking out loud tcrn.ch/3D9gZw4
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When I was on a menswear forum, I remember discussing the question of why there are so many bespoke shoemakers in Tokyo. Some said "it's because the Japanese value craftsmanship. They are noble, not like wasteful Westerners." This sort of handwaving feels unsatisfying to me.
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Andrew Hsu retweeted
Not surprisingly, the company with this graph was successful at fundraising. This is Speak, which just closed a round at a $500m valuation. They've been focusing on AI since long before it was cool, so when the technology matured, it shot them forward.
A novel variant of exponential revenue graph. This company is selling something users often sign up for as a new year's resolution. The product works, so they stay around.
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Andrew Hsu retweeted
OpenAI
@OpenAI15 Apr 2024
Introducing OpenAI Japan, our first office in Asia, along with a new GPT-4 custom model specifically optimized for 日本語 (the Japanese language). openai.com/blog/introducing-…
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Underrated OpenAI announcement that came out middle of night in SF: a new JP specific GPT-4 model. openai.com/blog/introducing-… Fixing the tokenizer for East Asian languages is a MASSIVE step up for the billions of potential end users w/ non Latin alphabet languages.
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RT @OpenAI: We have reached an agreement in principle for Sam to return to OpenAI as CEO with a new initial board of Bret Taylor (Chair), L…
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Excited to announce we raised more money and *finally* an imminent US launch! The way humans learn is being fundamentally reshaped with AI and we're excited for people in the US to experience what people in 20+ other countries already love. The interesting thing about this raise is that we had the opportunity to close a more traditional Series C, which would have involved a much larger amount raised and dilution. As a founder, it's super difficult to turn down more capital for your business. It's tempting to think about all the ways you could use it to hire more people, invest in new opportunities, etc. But ultimately we realized that an even stronger path to a higher quality business was to focus on sustainability earlier. Which is ultimately the path most beneficial to both our customers and employees too. More and more I'm seeing other founders do the same - it's a refreshing change! We're fortunate to have existing investors who are supportive of our long term vision to build a generational company. Thank you to @lachygroom, @bradlightcap at @OpenAI, @gokulr and more for all the support thus far. If you're interested in helping us build the future of learning using AI please get in touch! speak.com/blog/series-b-2
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3 months in and #1 edu app in Japan!
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1/ Excited to share that Speak raised a $27M Series B, led by the @OpenAI Startup Fund! We're on a mission to make learning a language 10x easier through AI. This partnership greatly accelerates that mission:
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OH GOD. Someone just actually ran up to the lift and yelled "Hold the door", and keep it together, Ed, keep it together.
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