Paul Garcia (@top_nexus) header
Paul Garcia (@top_nexus) profile picture

Agentic AI in the wild. Construction, credit, and any shop still held together with CSVs. NYC.

New York, USA
Joined June 2012
Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)Photo by Paul Garcia (@top_nexus)
Paul Garcia retweeted
The US needs to quit crying about Chinese spies and send hot midwestern smart blondes to China in retaliation. The US needs to stop being a bitch.
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Think of all the gay spies who got absolutely nowhere with Sam Altman….
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No matter how u sum it up.... China won the war.
I'm seeing a pattern here
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Paul Garcia retweeted
Honestly, shame on the CIA for not getting Jensen a patriotic state issued baddie.
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musk says that in a world of AI abundance there's no need to save money. maybe. nobody knows the timing, so i'm not betting rent on it. but he also said the real question would be meaning. that's the part worth sitting with. if you never had to work again, what would you do on a tuesday?
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Paul Garcia retweeted
Jane Street engineer: "95% of Jane Street Quants are running swarms of AI agents We build JaneGPT in 3 days - our own AI we use for trading and research to make $39.6B/year" In 1-hour Jane Street team explained how they uses AI for their fund - and how they build their own AI that generates profit 5:14 → how AI lives inside Jane Street's 20:22 → AI agents working on Jane Street's big data research 45:26 → why trading firm builds its own data-centers 1:10:05 → AI that watches live metrics and helps when things break Learn how Jane Streaet use AI - no matter what, this is the best AI + trading conversation out there:
Finally... AI trading system that I trust with my money Built on Jane Street’s rules, the firm behind ~10% of US stocks 6 GrokBot + Opus 5.5 agents find, test and kill trades 24/7 while you sleep In this article, I show you how to build it:
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The famous METR trial: 16 developers, 246 tasks, experienced devs 19% slower with AI tools. METR's own follow-up calls that evidence very weak. Ep 9 of Harness, from zero is live. #AI #DevTools #AIAgents #Coding
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Support, finance, legal, ops: each department rebuilds the same harness in a different room. The case studies are mostly vendor numbers, so trust the pattern, verify the percentages. Ep 8 of Harness, from zero is live. #AI #EnterpriseAI #AIAgents #LLM
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Support, finance, legal, ops: each department rebuilds the same harness in a different room. The case studies are mostly vendor numbers, so trust the pattern, verify the percentages. Ep 8 of Harness, from zero is live. #AI #EnterpriseAI #AIAgents #LLM
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Starting today, eligible ChatGPT Pro and Business subscribers can claim up to $500 per month in API credits to build apps and agents.
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Passing once is luck. Pass^k asks whether an agent passes every time. Consistency cuts both ways though: an agent can be reliably wrong, with total confidence. Ep 7 of Harness, from zero is live. #AI #Evals #AIAgents #LLM
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Passing once is luck. Pass^k asks whether an agent passes every time. Consistency cuts both ways though: an agent can be reliably wrong, with total confidence. Ep 7 of Harness, from zero is live. #AI #Evals #AIAgents #LLM
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Context rot: across 18 frontier models, performance sagged roughly 113,000 tokens into million-token windows, while about 300 tokens of focused context stayed reliable. Ep 5 of Harness, from zero is live. #AI #LLM #AIAgents #ContextWindow
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Context rot: across 18 frontier models, performance sagged roughly 113,000 tokens into million-token windows, while about 300 tokens of focused context stayed reliable. Ep 5 of Harness, from zero is live. #AI #LLM #AIAgents #ContextWindow
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Sometimes it's not the model. It's an expired key. Keys, quotas, balances: alert before they expire, budget them, health-check each provider, and give the whole layer one named owner.
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Who's data is there left to leak? I feel like we covered everyone this month
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Guardrails that work: sandboxing cut permission prompts 84% in the vendor's own usage, and browser-agent attack success fell from about 8% to 1.4% with better safeguards. Ep 4 of Harness, from zero is live. #AI #AIAgents #AISafety #LLM
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Guardrails that work: sandboxing cut permission prompts 84% in the vendor's own usage, and browser-agent attack success fell from about 8% to 1.4% with better safeguards. Ep 4 of Harness, from zero is live. #AI #AIAgents #AISafety #LLM
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Five popular MCP servers carry 58 tools and about 55,000 tokens of tool descriptions, paid on every run. One fix cuts the upfront bill to under 9,000. Ep 3 of Harness, from zero is live. #AI #MCP #AIAgents #LLM
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Five popular MCP servers carry 58 tools and about 55,000 tokens of tool descriptions, paid on every run. One fix cuts the upfront bill to under 9,000. Ep 3 of Harness, from zero is live. #AI #MCP #AIAgents #LLM
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