Andrew Hsu
@adhsu
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Cofounder and CTO of Speak, an AI-powered language learning app.
San Francisco
Joined October 2009
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Pinned Tweet
We’ve been working closely with OpenAI for the past few months to test the new Realtime API. I’m excited to share some thoughts on the best way to productize speech-to-speech for language learning, and announce the first thing we’ve built here, Live Roleplays. 🧵
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We’re announcing our fundraise at a $500m valuation and that we’ve doubled YoY for the past 5 years. Speak is the category-defining consumer product for AI language learning and our mission is to reinvent the way people learn, starting with language.
It’s still early days and we
Big day for Speak!
Announcing our latest round at a $500M valuation preempted by our internal investors including
@joshbuckley
,
@OpenAI
,
@paulg
, Jeff Weiner,
@gokulr
,
@khoslaventures
.
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Ah, a good mnemonic for remembering the mac option key icon ⌥ is that it looks like a railroad switch, hence option.
What does ⌥ (the Mac option key symbol) represent? Here’s an explanation, using
@trainyard
.
http://t.co/ZYi25EY5
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The future of science. Congrats to my brother
@pdhsu
!!
Nearly 2 years after our announcement, preparing for
@arcinstitute
's official opening this afternoon.
(Actual science started ~18 months ago. We've just been waiting for construction to complete, equipment to arrive, and for time to stage a proper unveiling.)
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Language learning is the perfect usecase for speech-to-speech, as everyone is discovering! We’ve been blown away at how immersive our conversational practice experience now feels. But how does it differ from a general AI assistant like Advanced Voice Mode?
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And finally - huge congrats to the Realtime team at OpenAI. This launch is a fundamental step towards making our interactions with technology more natural, fluid, and healthy. An immense amount of work at crazy pace went into this launch and we’re inspired and excited to continue
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We think it’s more important than ever to create a product experience that’s purpose-built for language learning by combining the best technology, product design, and pedagogy. This is what enables a real path to language fluency beyond the first 15 minutes of interaction.
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We're serious about consumer AI at Speak and actively expanding our eng and ML teams. Click through for a pretty crazy graph. Come build with us!
If you’re interested in vertical revenue lines and working on one of the most interesting consumer usecases for generative AI, check out or DM me!
Hiring excellent people across all functions.
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Here are some key aspects of how we’ve purpose-built this experience to be the most effective:
1. As a user progresses through the conversation, we use our proficiency graph to ensure the dialogue is at the right level and exposes helpful language they should learn next
2. We
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The result is a user experience that is far more specialized and helpful for our learners! Today, we’re announcing Live Roleplays, a new Speak experience that combines Realtime API with our learning engine to enable immersive speaking practice in a variety of roleplay scenarios.
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Congrats team
@OpenAI
on launching 4o with native multimodal! Latency is below the magic threshold and interrupts seem to work great - so amazing.
We’re particularly excited about the audio understanding capabilities - will be revolutionary for the language tutoring usecase at
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This is just the beginning and there are still limitations that we expect to improve dramatically in the near future. We’re excited to continue releasing this realtime tech across many different surfaces in Speak in the coming months.
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And of course all of our lessons are driven by our proprietary learning engine so these Live Roleplays (along with all of our lesson types) happen as part of a wider learning sequence personalized to the learner.
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The biggest actual developer improvement imo - guaranteed valid json output, enforced at inference time
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Beautiful essay by
@michael_nielsen
on the universality of neural networks:
http://t.co/sGsHVU5Mx0
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Tagline for mechanical turk: "Our algorithms are based on millions of years of natural selection"
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@wangzjeff
basic but many don’t know - for openai api, make your max_tokens as low as possible.
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Classic SF: 3 delivery guys at our door just now. Good Eggs, Google Shopping express, UPS. They're all friends now.
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I get annoyed when I have to wait more than 5 min for an Uber or Lyft, and then I realize what I'm complaining about.
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@jxnlco
@wangzjeff
rate limit is calculated off prompt_tokens+max_tokens and memory usage is lower too
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One of the more astonishing and strong optical illusions I've seen
"Yellow vs. black eyes"
The eye in the left face appears yellowish while that in the right face appear blackish, though they are the same color (R128, G128, B128).
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I've identified the most-difficult-to-remember symbols in human history.
http://t.co/SYRbPbwveb
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Another ultimate test of self-control: ability to wait for frozen cream puffs to thaw before eating.
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Silicon Valley has warped my mind - everything ending in -ly feels like a startup name
http://t.co/MBRtBCwaFT
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@amanrsanger
@cursor_ai
Awesome thread! Do you have a max acceptable per token sampling latency that you’re driving throughout towards?
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I really should have gotten 16gb of RAM in my new Macbook Pro instead of 8gb. Today's applications use so much RAM.
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“I've been using Slab to share knowledge with my team - it's a game changer. Subscribe on Product Hunt Upcoming for early access
"
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Endless online paywalls for papers funded by the government make it so difficult to do independent research. (╯°□°)╯︵ ┻━┻
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Nice hotel I'm staying at in Seattle is trying to sell this rubber ducky for $5 in the minibar
http://t.co/fWt2wqoBgd
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@zebulgar
@jonathonbarkl
@connorzwick
Looks good, but to be strict you can remove the '으' character. Good otherwise
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Jessica Livingston: Why Startups Need to Focus on Sales, Not Marketing - The Accelerators - WSJ
http://t.co/clUg5elEJ6
via
@WSJ
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You know you're getting somewhere when your users demonstrate JS injection attacks against you 24 hrs after launch
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The lighting from above in
@BarrysBootcamp
makes you look so jacked. Or maybe I was just delirious from the insane workout.
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Listening to Time from the Inception soundtrack while coding makes you feel like the biggest badass ever
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is almost a parody of frontend hacks - it hijacks click and appends an iframe modal that takes over browser history
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Congrats
@StedmanBlake
and
@PlateJoy
team on building an awesome product and raising a round!
http://t.co/nMFB5OhsjX
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2 decades of eating mints and Altoids are still the undefeated champion.
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If you're a Tesla owner, in a few years you'll be able to POST /vehicles/{id}/command/drive/wholefoods
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About to demo and Github goes down. About to launch and
http://t.co/5G1rmgRPNI
goes down. Murphy's law strikes again.
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Saw
@sanferminband
last night at the Independent with
@AriannaSimpson
- what an incredible show. Everyone go see them live!!
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Your startup isn't big until you can drop the first word from your two-word name. crowdtilt -> tilt, rapgenius -> genius, generally works
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It's much harder to beat the Google Maps time estimate than it was 6 months ago
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New
@RapGenius
design & annotations feature is super slick! Check it in the wild at:
http://t.co/xpdAZiC1RJ
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Wow. Check out Youtube's original deck and Sequoia's analysis for their investment. Fascinating to see the other side
http://t.co/qnIZAYSmjg
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@_tessr
@Jeevesmeister
I apologize for calling you a white knight and recognize misinterpretation is possible without context!
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Tapping (not clicking) the iPhone home button should return you to the previous screen, like the back button in Android.
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.
@peterthiel
has a pretty entertaining and good AMA on Reddit happening now - check it out!
http://t.co/TGy5jVWaqL
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You know you're hungry when you type git chickenout instead of git checkout
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This makes me incredibly uncomfortable - deliberate misrepresentation of data for (probably) political purposes.
http://t.co/zPF3mWXKWq
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Spotify, for $10/mo, is probably the best value out of any subscription service I'm on. I listen to music a LOT.
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It pleases me that the first google result for 'black screen' is exactly what I wanted.
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Had to use my old non-retina Macbook Air today and realized how much of a quantum leap the retina display actually is.
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New Macbook Pro!! I never used to get this excited about new laptops. Great job, Apple.
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@CallMePotluck
@Spikeball
@alvinhsia
@MITDelian
@nicklovescode
Haha, this photo is great. Spikeball is so much fun
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http://t.co/utoAbe3SqY
First reaction: ads, ads everywhere. Second reaction: lack of punctuation in URLs is bad
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Been gushing about this privately, but Captain America: The Winter Soldier had some of the most well choreographed fights in recent memory.
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Among some of the competencies I look for in team members: attitude/enthusiasm, work ethic, commitment.
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Switching from iOS to Android and being unable to disconnect your phone number from iMessage is one of the most frustrating things ever.
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I feel slightly guilty that moving my pinky up to Esc to kill the Sublime Text unregistered nag screen is now a fully automatic reflex
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