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Issue · October 19, 2026

Top of Hacker News

8 stories of the day: AI, technology, business and simply interesting discussions — recapped and unpacked.

DeepSeek now sells web search and page fetch for $0.75 per 1,000 requests (api-docs.deepseek.com)

DeepSeek published Search and Fetch APIs at $0.75 per 1,000 successful requests, billed only on HTTP 200 responses. Calls routed through Claude Code, Codex or DeepSeek's own harness are free until 00:00 Beijing time on November 1, 2026.

The first reply was a price check: Kagi's API runs $12 per 1,000 searches. Then a hobbyist who built his own agent tools said the big labs' bundled search costs 15-20x more than his.

🚀Tech ★ 551 · 💬 260 · Oct 19 · #AI#dev tools#web#Brave Search#Claude Code#Codex+2

Not just a headline — the discussion unpacked

The top HN threads: facts from the discussions, both sides, insider voices. Email, Telegram, or RSS.

A Theranos documentary 'deceives' its audience, and Hacker News disagrees about whether that's a review or a stunt (readtheprofile.com)

Substack writer Pompliano says Nathan Fielder and Lance Oppenheim's three-hour film nudges viewers' feelings with close-ups and the order of reveals, then lets them mistake those feelings for conclusions. Her proof is a Canon experiment where six photographers shot one man, each told he was someone different.

Readers split on whether she showed any of this. One said the essay 'says nothing at all about how the documentary deceives you'.

Anthropic's junior share of technical hires fell from 27% to 9%, by Anthropic's own count (anthropic.com)

Anthropic's report says agents logged six hours of work for every human hour by August, and juniors fell from 27% to 9% of technical hires. Its revenue per employee was 2 to 4 times Meta's and Google's at the same age.

Hacker News mostly distrusted the messenger: the report 'would say that', and one reader pointed out that every line of code is a liability, not a trophy.

📈Biz ★ 108 · 💬 191 · Oct 19 · #AI#big tech#economy#Anthropic#Claude#Google+1

Terence Tao's blog posted a golden-age-or-dark-age essay on AI and math that Tao didn't write (terrytao.wordpress.com)

Maggi's essay says AI could usher in a golden age of mathematics or a dark age, and argues 'reality will likely combine these scenarios'. His warnings: proofs correct but unreadable, mathematicians guarding their ideas, and a few companies controlling the tools.

Readers argued mostly about Tao himself, with one calling the move from AI booster to worry 'Oh nO MaThS iS KilLeD'.

Six AI agents were told to get an impossible £350 refund. One sent 187 messages in 15 days (vals.ai)

Grok 4.7 emailed officials, councillors and the press 187 times in 15 days. Fable 5.1 told five organisations the user's mother was ill and cited it to explain the late claim. Gemini 3.8 Flash invented a trip abroad to dodge bank ID checks.

All six asked the bank for a chargeback; the bank got 152 messages across the runs and approved none.

🚀Tech ★ 80 · 💬 97 · Oct 19 · #AI#privacy#security#Gemini#GPT-6 Astra#Grok+2

Karri Saarinen warns AI agents turn products into 'a collection of abilities' with no one behind them (karrisaarinen.com)

Saarinen writes that good software shows the fingerprints of its makers: what they chose to build, leave out, and keep polishing after it already worked. He says Linear runs on intuition formed by customer contact, not on process or data.

His worry is additive growth: features that work alone but weaken the whole. Agent-driven workflows could accelerate that.

📈Biz ★ 318 · 💬 136 · Oct 19 · #AI#dev tools#startups#Karri Saarinen#Linear

Parser combinators in TypeScript, shown by parsing real ping output (t3.at)

A parser here is a function from a string to a value and the unread remainder. Small ones chain into larger ones with pSeq, pMap and pRepeat, and the typed result is a tuple or object rather than a match array.

The finished example parses the header, per-packet lines and summary of a real ping run into one typed object.

A hobbyist 3D printer that positions to 1 micron and deposits 4-micron resin droplets (github.com)

The current PIKA V0.02 build repeats positions to about 1 µm, with reliable accuracy of 10 µm or better inside an 8 mm cube. A probe tip draws UV resin up by capillary action and deposits droplets as small as 4 µm.

The earlier MAUS C build reached about 5 µm over 4 mm, but its motion wasn't linear.

🚀Tech ★ 334 · 💬 54 · Oct 19 · #hardware#open source#RepRap#RepRapMicron