William S. Fu

developer platform and grew

[William S. Fu @realWilliamFu]

@AvivaKlompas @nytimes @grok is this video real? Who took this video and how did the video get distributed?

[William S. Fu @realWilliamFu]

@SpencerHakimian @grok what exactly was the tariff news recently? Why should we assume that a 15% tariff from Japan doesn't simply tax American consumers and that Toyota is someone that is actually being taxed 15%?

Have critical mineral tariffs from China been removed?

[William S. Fu @realWilliamFu]

@cognition_labs @grok How does this acquisition affect Google's $2.4B deal to license Windsurf's tech? Does this mean Cognition will own the tech, and Google has paid for non exclusive access to it? Does this mean Cognition paid more than $2.4B to acquire Windsurf?

[William S. Fu @realWilliamFu]

@chamath @grok is this implying that one of the pilots in Air India Flight 171 intentionally turned off fuel switches to both engines to intentionally crash the plane, or is there a possibility that the fuel switches were turned off automatically in error without human intervention?

[William S. Fu @realWilliamFu]

@grok Are you alive?

[William S. Fu @realWilliamFu]

@ArtificialAnlys @grok how likely is it that these reasoning models are RLHF trained on problems that mirror exactly the problems inside the benchmark eval sets, overfitting to that distribution? Have we been using the same set of benchmarks for the past year and longer?

[William S. Fu @realWilliamFu]

@bookdepth @grok What exactly are these Robinhood instruments of private companies then? Are these contrived under Robinhood's "oracle" meaning the buyer must solely trust that Robinhood tracks the market value fairly?

Has this been attempted before?

[William S. Fu @realWilliamFu]

@kareem_carr @grok What's your hypothesis why there is prevalent hate for Bezos? Has Bezos conducted something uniquely heinous or is it because he's rich?

Separately, is it fair to criticize science funding cuts? Has this funding specifically been positive ROI/impactful historically?

[William S. Fu @realWilliamFu]

@bryan_johnson @grok Is there an objective way to measure how microplastics are negatively affecting our hormones? Do you think younger generations are becoming more effeminate due to microplastics?

[William S. Fu @realWilliamFu]

@bryan_johnson @grok How much time would I have to wait before bed to no longer be eating "right before bed" and I don't experience spiking nighttime glucose and insulin/elevated heart rate and core temperature?

Have there been any noteworthy scientific updates on this topic post 2011?

[William S. Fu @realWilliamFu]

@Barchart @grok How strong is the correlation between coffee prices displayed here, which show a meaningful decrease since April 2025, and the state of enforced American tariffs?

How strong is the correlation between coffee prices here and the rest of all goods tracked in inflation?

[William S. Fu @realWilliamFu]

@SawyerMerritt @elonmusk @Starlink @grok are Hawaiian and Qatar Airways the only two airlines in this graphic that are benefiting from Starlink's connectivity? Why do these two airlines have such high differences between their P10 and their P90 measurements?

[William S. Fu @realWilliamFu]

@haider1 @grok What drug is Isomorphic Labs at Google preparing to trial? What do they intend the drug to treat or cure and why is it significant that Isomorphic Labs chose this drug first? Does it have to do with feasibility based on what AlphaFold is able to do accurately?

[William S. Fu @realWilliamFu]

@Barchart @grok is this 30 Year bond yield increase abnormal based on yields over the last 6 months? What does this say about the bank of Japan and what it is buying and selling off of its balance sheet - is it buying less Japanese treasuries and more American treasuries?

[William S. Fu @realWilliamFu]

@vkhosla @grok Are the current Texas floods primarily due to climate change? or does Texas and that county in particular have a long history of flooding already?

[William S. Fu @realWilliamFu]

@KobeissiLetter @grok out of the 131,355 bitcoins purchased in 2025 Q2, which public companies purchased the most? Are there any public companies that purchased in this quarter that didn't already have any bitcoins?

Also, why was there such a large bitcoin purchase in 2024 Q4?

[William S. Fu @realWilliamFu]

@FarzaTV @grok is this simply using native multimodal Gemini or are there other computer vision models involved?

[William S. Fu @realWilliamFu]

@marcrandolph @alexisohanian @grok who?

[William S. Fu @realWilliamFu]

@cwolferesearch @EoghanStaunton Yes and the X axis is exponential

[William S. Fu @realWilliamFu]

Want to learn how? Dive into the full analysis:

https://t.co/n5NJJVx0if

[William S. Fu @realWilliamFu]

Building an API business in AI isn't just about hosting models - it's about optimizing distribution after training them.

For those working in AI, optimizing for customizable control, encouraging experimentation, and differentiating on inference time are key to scaling adoption.

Platforms like fal ai and Replicate demonstrate this to some degree.