Show HN: A model index from the AI Gateways https://ift.tt/QGbPgrT

Show HN: A model index from the AI Gateways https://ift.tt/uLkImpn September 19, 2026 at 12:26AM

Show HN: Learn divergently/chaotically with tree-learn https://ift.tt/kviXMO4

Show HN: Learn divergently/chaotically with tree-learn Chat interface is linear, I never quite liked that for when I would have too many questions, I would end up asking questions in a numbered list and not really have independent branches of conversation. On cli, the pi agent gives you this same functionality. On web, I made Fable make this. BYOK Openrouter - all client side - you can check the network console! https://ift.tt/zrXkDRB https://tree-learn.srijanshukla18.workers.dev September 18, 2026 at 09:51PM

Show HN: Composing domain-specific harness on Python in 10 mins https://ift.tt/F8mLOw1

Show HN: Composing domain-specific harness on Python in 10 mins https://ift.tt/9lDoXF2 September 18, 2026 at 02:16AM

Show HN: The Endless Museum, Wikipedia as a walkable museum https://ift.tt/IoSpLdR

Show HN: The Endless Museum, Wikipedia as a walkable museum https://ift.tt/QpKvCO6 September 18, 2026 at 12:28AM

Show HN: Ax-Check.com – Can Agents Use Your Product? https://ift.tt/u9HbF7c

Show HN: Ax-Check.com – Can Agents Use Your Product? This is a free site that checks whether agents can smoothly navigate a site and try out the product. Agents can use this too, just point them to ax-check.com https://ift.tt/XROFz14 September 17, 2026 at 11:38PM

Show HN: Restarted – a 2026 remake of the classic 2015 startup generator https://ift.tt/1X8hqTa

Show HN: Restarted – a 2026 remake of the classic 2015 startup generator The original startup website generator by Tiff Zhang and Mike Bradley landed on Hacker News in April 2015 ( https://ift.tt/MfWJjYF ) and has been one of my favorite little novelties of that era ever since. It perfectly captures the saturated colors, cliché hero shots, gimmicky names, buzzword-heavy slogans, and proudly hirsute team photos of the time. A lot has changed since then, so I thought it would be fun to make a contemporary remake: https://restarted.io/ By default you get the minimalist aesthetic and clean-cut faces of 2026. The classic 2015 look is still available — just click the link at the bottom of the page or change the “z” parameter in the URL to the more familiar “s”. The universe of partner sites and competing startups is just as expansive as it ever was. The original site is entirely client-side and requires downloading all of the data tables locally. It leans on a mix of jQuery 1.11.2, Bootstrap 3.3.2, and Font Awesome 4.3.0, and if you view the source, it instantly gives away all of its secrets. For restarted.io I replaced all of that with a server-side renderer written in Go, so this time view-source tells you nothing. There are many Easter eggs in there — see how many you can find before I write them up. My original goal was to stay faithful to the 2015 appearance, and that turned out to be a technical adventure. The original's sine-based random number generator is... the worst, and different implementations of sine give different results. The eventual solution was to extract the exact sine function from Chrome’s V8 engine, as vendored C behind cgo and as a line-by-line Go port that keeps cgo optional, so the seeds and results line up the way they used to. Both are checked against V8’s own test cases. Then I discovered a bug in the original code that made half of its vocabulary unreachable — the first half of the verb table and the second half of the noun table, exactly complementary, so nothing about the output ever looked truncated. My goal then shifted from remaking the generator as it was in 2015 to remaking the site as the authors intended it to be in 2015. Over the years several people asked for their photos to be removed, so the remake instead draws from a broad pool of era-appropriate AI-generated profiles. A perceptual hash helps keep everyone looking distinct, and there’s a bit of extra care to make sure the Wang Fangs of the world don’t appear as Irish lasses. The hero image pool is much larger now, and all the old Rio de Janeiro shots have been retired, though you’ll still recognize plenty of the 2015 photos. Have fun poking around! https://restarted.io/ September 15, 2026 at 05:04PM

Show HN: SeasonMap – when to travel where? visualized with climate data https://ift.tt/RJ2t70d

Show HN: SeasonMap – when to travel where? visualized with climate data Author here. I'm trying to visit every country and I've been to 158 so far. Before I decide where to travel, I'd ask a local friend which season to avoid, or open up dozens of browser tabs on climate data to figure out what the place is like in a given month. Climate data still miss things. Cancun in September looks great on paper, with 31°C and 10 hours of sun, but it's hurricane season and the beaches can be covered in seaweed. Typical info that locals would know, which can also be captured as static data. So I built SeasonMap to answer "when should I go to ?" What you can do: - Pick a travel style (city walk, beach, hiking, skiing, max sun, low humidity, etc.) and see every place ranked on a map - See what's in season and what to avoid, and why: monsoon, hurricanes, extreme heat, bad air, peak crowds - Filter destinations by temperature, rainfall, sunshine, air quality and hazard seasons - Open a place to see its whole year: month by month weather, events (festivals, whale watching, cherry blossom), crowd levels, practical notes like scams, and traveller anecdotes summarized by AI with links to the sources Data Source & how I made it: - The climate data is ERA5 normals via Open-Meteo (2016–2025), corrected with NOAA station data where available. - Events, hazards and traveller notes were researched and by AI agents, and every one links to its source. Gathering it was easy. Checking it was the hard part. - Yes, I've used AI heavily on this project before anyone call it an AI slop. Making was easy, but it took billons of tokens of beating whack-a-mole ai to polish and tweak to make it usable and decent. Through that, I've created many skills and evals ranging from visual qa, evals for irregular data, automated i18n and others. It still feels much like AI as I was using Claude Design, which i want to improve on. I tried using local llm, but the throughput was so low. Pricing: the first 5 minutes are fully open, no signup. After that, the top 3 destinations and 25 place breakdowns a month are free. A 30-day pass is $7, $39 a year or $69 lifetime. iOS and Android apps are coming soon. Any feedback welcome. https://seasonmap.app September 16, 2026 at 09:13PM