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Kimi K2.7 Code is generally available in GitHub Copilot

https://github.blog/changelog/2026-07-01-kimi-k2-7-is-now-available-in-github-copilot/
125•unliftedq•4h ago•39 comments

A new Android malware from Google

https://f-droid.org/2026/07/01/adv-malware.html
324•drewfax•5h ago•151 comments

We Don't Have to Be This Bad at Improving Society

https://kasperjunge.com/blog/we-dont-have-to-be-this-bad-at-improving-society/
12•juunge•29m ago•2 comments

ZCode – Harness for GLM-5.2

https://zcode.z.ai/en
386•chvid•10h ago•287 comments

Oomwoo, an open-source robot vacuum you build yourself

https://makerspet.com/blog/building-an-open-source-robot-vacuum-meet-oomwoo/
271•devicelimit•8h ago•50 comments

Asymmetric Quantization: Near-Lossless Retrieval with 97% Storage Reduction

https://www.mixedbread.com/blog/asymmetric-quant
16•breadislove•2d ago•2 comments

CursorBench 3.1

https://cursor.com/evals
50•handfuloflight•3h ago•35 comments

Bring back crappy forums

https://tedium.co/2026/07/01/online-web-forums-retrospective/
240•pentagrama•6h ago•142 comments

The Fall of the Theorem Economy

https://davidbessis.substack.com/p/the-fall-of-the-theorem-economy
6•varjag•54m ago•0 comments

What to learn to be a graphics programmer

https://blog.demofox.org/2026/07/01/what-to-learn-to-be-a-graphics-programmer/
332•atan2•15h ago•175 comments

FFmpeg 9.1's new AAC encoder

https://hydrogenaudio.org/index.php/topic,129691.0.html
370•ledoge•18h ago•112 comments

Opening up 'Zero-Knowledge Proof' technology to promote privacy in age assurance

https://blog.google/innovation-and-ai/technology/safety-security/opening-up-zero-knowledge-proof-...
149•consumer451•10h ago•140 comments

My Favorite Keyboards

https://fabiensanglard.net/keyboards/index.html
9•tmach32•3d ago•0 comments

Ask HN: Who is hiring? (July 2026)

197•whoishiring•17h ago•207 comments

How do wombats poop cubes?

https://www.science.org/content/article/how-do-wombats-poop-cubes-scientists-get-bottom-mystery
112•bushwart•1d ago•51 comments

Learn Vim motions with an ice-cream van

https://thisismodest.com/vimscoops/
65•marcusmichaels•14h ago•12 comments

Weave Robotics launches Isaac 1, a $7,999 home robot with Fall 2026 deliveries

https://www.weaverobotics.com/isaac-1
171•ryanmerket•14h ago•239 comments

The Underhanded C Contest

https://underhanded-c.org/
90•ccabraldev•10h ago•11 comments

Qualcomm Linux 2.0

https://www.qualcomm.com/developer/blog/2026/06/qualcomm-linux-2-now-available
100•gilgamesh3•11h ago•41 comments

For first time, a cell built from scratch grows and divides

https://www.quantamagazine.org/for-the-first-time-a-cell-built-from-scratch-grows-and-divides-202...
849•defrost•18h ago•276 comments

Show HN: Searchable directory of 22k+ products from worker-owned co-ops

https://www.workerowned.info/
343•IESAI_ski•12h ago•65 comments

Why jet engines aren't made in China

https://aakash.substack.com/p/why-jet-engines-arent-made-in-china
146•paulpauper•1d ago•117 comments

The Wisdom of Quinn the Eskimo (Apple Developer Technical Support Engineer)

https://github.com/macshome/The-Wisdom-of-Quinn
17•gregsadetsky•2d ago•8 comments

Monetization Gateway: Charge for any resource behind Cloudflare via x402

https://blog.cloudflare.com/monetization-gateway/
293•soheilpro•18h ago•207 comments

Senior SWE-Bench: open-source benchmark that assesses agents as senior engineers

https://senior-swe-bench.snorkel.ai/
72•matt_d•6h ago•62 comments

Ask HN: Who wants to be hired? (July 2026)

130•whoishiring•17h ago•313 comments

The Apple Disk II Controller Card (2021)

https://www.bigmessowires.com/2021/11/12/the-amazing-disk-ii-controller-card/
82•stmw•2d ago•20 comments

Proliferate (YC S25) Is Hiring

https://www.ycombinator.com/companies/proliferate/jobs/mMHvKR9-founding-product-engineer
1•pablo24602•11h ago

Chip Off The Old Block

https://www.astralcodexten.com/p/chip-off-the-old-block
77•paulpauper•11h ago•8 comments

Launch HN: Parsewise (YC P25) – Reason Across Documents with an API

51•gergelycsegzi•19h ago•50 comments
Open in hackernews

MarketFish – Simulate a market with 128 AI consumers before you launch

https://github.com/Key-wxh/market-fish
14•a280887763•2h ago

Comments

a280887763•2h ago
I got tired of launching products into the void and wondering "will anyone actually buy this?" So I built a multi-agent market simulation engine.

Instead of asking one LLM "will my product succeed?", MarketFish creates 128+ AI consumers — each with their own identity, budget, emotions, and biases — and lets them shop across 30 rounds. Their purchase decisions, churn patterns, and social influence reveal what real users would do.

How it works:

Stage 1: Build an ontology from seed data (9 real-time APIs: GitHub, HN, ProductHunt, StackOverflow, Google Trends, EastMoney, World Bank, China retail, 36Kr) Stage 2: Generate a knowledge graph of entities + pain points Stage 3: Generate diverse AI agents (students, freelancers, SMB owners, enterprise buyers, competitors, macro factors) Stage 4: Run 30-round market simulation with cross-domain coupling (emotions, social contagion, FOMO) + economic RL Stage 5: Teacher-student report generation with multi-perspective analysis Why 6 LLMs instead of 1? Different agents need different thinking styles. Consumer agents use DeepSeek (fast), SMB owners use Qwen (structured), teacher critiques use Zhipu (skeptical), student reports use Doubao (analytical). 11 providers total, zero dependency on any single vendor.

A fun bug I just fixed: I added "temporal activation" based on the OASIS paper — not all agents should be active every round. But I set the activation probability to match a 24-hour human cycle (1% at midnight). Result: 128 agents, 1 active per round, zero purchases. Found it after 3 pipeline runs. Fixed by disabling the 24h mapping for simulation timescales.

Today's prediction results:

Woolly AI (auto-haggle discounts) — winner, survival score 0.871 I'm Not Stupid (senior fraud protection) — runner-up, 0.831 Merge AI (smart home control) — 0.829 4 B2B products all failed (0 purchasers) Built on 6 papers: Generative Agents (2023), OASIS (2025), TwinMarket (2025), Agent Bazaar (2026), EconSimulacra (2026), SMIF.

Open source (MIT). Would love feedback from anyone who's built simulators or market prediction tools.

refactor_master•34m ago
What properties does this have that somehow allows one to essentially predict the market or a proxy thereof, when seemingly nothing else can? Or did I get that part wrong?

It might take you from nothing to technically—a-market-fit, but from there to actually-a-market-fit?

My point is, there’s probably 1000s of companies doing the same things, following every playbook for success (do this, measure that, brand this, …), only for a single one of them to become a viral market hit, and the rest fade into obscurity.

daureg•14m ago
> Built on 6 papers: Generative Agents (2023), OASIS (2025), TwinMarket (2025), Agent Bazaar (2026), EconSimulacra (2026), SMIF

Could you link the actual papers in your README? Just searching OASIS (2025) on google is mostly about music :) I guess it is https://arxiv.org/abs/2411.11581

jkwang•53m ago
This is a clever use of simulated agents to stress-test a product idea before launch. Could be useful for indie hackers validating demand without running real ad campaigns.
bitwize•31m ago
Fizpa wizh?

Fizpa wizh?

Fizpa wizh?

I'll take it!

https://m.youtube.com/watch?v=AHeI1_XZeww&t=6m58s

bilekas•29m ago
I think I'm missing something, but how exactly is this weighing a specific market ? You have a "class UserProduct(BaseModel)" that seems to be very barebones and basic..

I mean, what's different from this vs just asking a regular llm to do some market research for you? Also it seems like it's not using any real data if I'm understanding this correctly, it's simulating similar products and evaluating against it ?

> find optimal pricing by simulating the same product at multiple price points.

comrade1234•25m ago
Did you try running this to analyze itself? That would be a good test.