Johnny Ho @randomjohnnyh
Cofounder, CSO @perplexity_ai. Former high frequency trader, competitive programmer. Think fast, build faster. perplexity.com New York, NY Joined December 2011-
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Johnny Ho retweeted
Jeremy Fineman presents his breakthrough algorithm at the ICPC 2025 World Finals in Baku: the first algorithm for single-source shortest paths with arbitrary negative weights (real, not integer) to improve upon Bellman-Ford from the 1950s: O~(m n^{8/9}) running time.
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Hard problems won’t solve themselves.
self-replicating AI
self-replicating AI
Future of generating UI instead of generating answers.
Future of generating UI instead of generating answers.
The future of browsing is just beginning. All future interfaces will be optimized for AI interaction: Comet pushes the frontier here with an AI that saves you time across an unlimited number of websites and tools.
The future of browsing is just beginning. All future interfaces will be optimized for AI interaction: Comet pushes the frontier here with an AI that saves you time across an unlimited number of websites and tools.
The team had a lot of fun imagining this one up - research, browsing, code, images, charts, shopping, travel, and app generation, all in one. More capabilities are available today to free and pro users than ever before.
The team had a lot of fun imagining this one up - research, browsing, code, images, charts, shopping, travel, and app generation, all in one. More capabilities are available today to free and pro users than ever before.
We should be investing in raising math standards: not lowering them. The best thing my high school (Lynbrook) did for us was to not only allow but encourage students to accelerate in math, taking calculus/linalg/diffeq/statistics multiple years early so that college would feel…
We should be investing in raising math standards: not lowering them. The best thing my high school (Lynbrook) did for us was to not only allow but encourage students to accelerate in math, taking calculus/linalg/diffeq/statistics multiple years early so that college would feel…
We just accepted our latest class of four Perplexity Residents: huge thanks to everyone who applied. Each quarter we'll continue to push forwards and train the next generation of AI-native engineers, who know how to code, prompt, research, evaluate, generate, and train models…
HFT guys are welcome at @perplexity_ai
HFT guys are welcome at @perplexity_ai
Sharing an unbiased version of R1 as our first open source model. Just removing censorship for now - what kind of capabilities should we add next?
Sharing an unbiased version of R1 as our first open source model. Just removing censorship for now - what kind of capabilities should we add next?
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