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Kimi-K3 Technical Report [pdf]

https://github.com/MoonshotAI/Kimi-K3/blob/main/k3_tech_report.pdf
184•vinhnx•1h ago•36 comments

Kimi-K3 Releases on HuggingFace 7/27

https://huggingface.co/moonshotai/Kimi-K3
898•nateb2022•10h ago•379 comments

Glue bonds to nonstick surfaces and wipes clean with ethanol

https://cen.acs.org/materials/adhesives/glue-bonds-nonstick-surfaces-wipes-clean/104/web/2026/07
34•gmays•4d ago•5 comments

The Computer That Helped Win World War II

https://spectrum.ieee.org/colossus-computer-ieee-milestone
55•baruchel•4d ago•8 comments

Removing React.js from the codebase and adapting Htmx for UI interactivity (2023)

https://misago-project.org/t/removing-reactjs-from-the-codebase-and-adapting-htmx-for-ui-interact...
125•Ralfp•6h ago•75 comments

AI companies spend record sums on Washington lobbying

https://www.ft.com/content/d8a5f95e-3b6d-463a-a848-c9ef8e2394db
96•1vuio0pswjnm7•2h ago•32 comments

How is the Bun Rewrite in Rust going?

https://lockwood.dev/ai/2026/07/27/how-is-the-bun-rewrite-in-rust-going.html
304•tomlockwood•5h ago•215 comments

Libsm64: Mario 64 as a library for use in external game engines

https://github.com/libsm64/libsm64
98•klaussilveira•6h ago•12 comments

PGSimCity - How PostgreSQL Works

https://nikolays.github.io/PGSimCity/
814•jonbaer•16h ago•77 comments

Should you wash your solar panels?

https://incoherency.co.uk/blog/stories/should-you-wash-your-solar-panels.html
123•surprisetalk•3h ago•88 comments

Magnolias Are So Old That They're Pollinated by Beetles, Not Bees

https://mymodernmet.com/magnolia-ancient-flowers-beetles/
198•speckx•4d ago•76 comments

Building a Fast Lock-Free Queue in Modern C++ from Scratch

https://blog.jaysmito.dev/blog/04-fast-lockfree-queues/
63•ibobev•5d ago•22 comments

VLC for Unity now supported on Linux

https://code.videolan.org/videolan/vlc-unity
93•martz•7h ago•29 comments

Towards a Theory of Bugs: The Ruliology of the Unexpected

https://writings.stephenwolfram.com/2026/07/towards-a-theory-of-bugs-the-ruliology-of-the-unexpec...
40•nsoonhui•3d ago•9 comments

Show HN: Physically accurate black hole you can put in your room

https://blackhole.plav.in
428•aplavin•4d ago•153 comments

First Robotic Satellite Servicer Launched

https://www.nrl.navy.mil/Media/News/Article/4551871/robotic-servicing-of-geosynchronous-satellite...
33•GlenTheMachine•3d ago•12 comments

Minecraft Java raises recommended memory to 16GB ahead of Vulkan transition

https://videocardz.com/newz/minecraft-java-edition-raises-recommended-memory-to-16gb-ahead-of-vul...
26•haunter•1h ago•25 comments

The Birth of the American 12-string Guitar

https://www.harpguitars.net/history/grunewald/12-string.htm
50•bilegeek•5h ago•28 comments

Apple Will 'Watch Everything Burn' When the AI Bubble Bursts

https://www.macrumors.com/2026/07/27/ed-zitron-apple-watch-it-burn-ai-bubble-bursts/
150•thm•1h ago•125 comments

Modern email can be built from borrowed parts

https://en.andros.dev/blog/d7ed8b07/modern-email-can-be-built-from-borrowed-parts/
91•andros•7h ago•39 comments

Shay Locomotives

https://www.shaylocomotives.com/
47•Rygian•7h ago•11 comments

Scriptc by Vercel: TypeScript-to-Native compiler, no JavaScript engine in binary

https://github.com/vercel-labs/scriptc
240•maxloh•17h ago•134 comments

US citizen charged after GrapheneOS phone wipes during airport search

https://www.techspot.com/news/113236-us-prosecutors-charge-atlanta-man-after-grapheneos-phone.html
1114•eecc•18h ago•841 comments

AI companies are shredding rare books

https://twitter.com/HedgieMarkets/status/2081534588485296565
587•anon373839•3h ago•347 comments

Decker, a platform that builds on the legacy of Hypercard and classic macOS

https://beyondloom.com/decker/
355•tosh•22h ago•86 comments

The Proof Machine (2016)

https://incredible.pm/
22•BenoitP•3h ago•1 comments

Google Chrome Arrives on ARM64 Linux, Widevine DRM Included

https://www.omgubuntu.co.uk/2026/07/chrome-arm64-linux-available
54•twapi•5h ago•31 comments

We have proof automation now

https://www.imperialviolet.org/2026/07/26/zstd-lean.html
215•zdw•19h ago•99 comments

Introduction to Data-Oriented Design [pdf]

https://www.gamedevs.org/uploads/introduction-to-data-oriented-design.pdf
231•tosh•22h ago•60 comments

I wanted a clock that never needed setting. Things escalated

https://arstechnica.com/gadgets/2026/07/i-wanted-a-clock-that-never-needed-setting-things-escalated/
154•lee_ars•4d ago•139 comments
Open in hackernews

Kimi-K3 Technical Report [pdf]

https://github.com/MoonshotAI/Kimi-K3/blob/main/k3_tech_report.pdf
181•vinhnx•1h ago

Comments

m00dy•51m ago
I would want to see three things before drawing strong conclusions:

End-to-end tokens/sec and cost on realistic coding agent trajectories, including tool outputs and retries, not isolated decode benchmarks.

Cache hit rates and prefill cost for branching, multi-turn sessions.

Router-load distributions after post-training, where expert collapse or specialization problems often show up.

storus•46m ago
What would be the current best method to fine-tune it for my own specific agentic tasks? LoRA + DPO? GRPO? Something else?
whimsicalism•46m ago
LoRA + SFT, but it'll be big - better to wait for a finetuning API from one of the providers, I wouldn't jump straight to RL or off-policy pseudo-RL like DPO.
m_ke•41m ago
Also open sourced a bunch of infra to go with it.

Anyone who claims open source and open weights models are "decel" needs to get their head checked

https://github.com/MoonshotAI/MoonEP

https://github.com/kvcache-ai/AgentEnv

https://github.com/MoonshotAI/FlashKDA

jvanderbot•40m ago
This comment would be much better without the second line
ike_a•33m ago
I'm not sure I understand the case for open-source models being decelerationist, is this it?

Decel:

- Potentially reduces investor appetite for funding big labs.

- More risk of powerful AI getting in bad hands -> more regulation.

Accel:

- More competition so big labs can't rest on laurels.

- More research in open, so all labs can accrete advancements faster.

I feel like open-source = acceleration has a much more clear argument. (and how bad would deceleration be in any case?)

Iolaum•30m ago
Open Source models decelerate growth of closed AI. For people who think (or want) AI = closed_AI then that argument has weight. Good luck getting them to update their priors.
StevenWaterman•30m ago
I think it's basically open weights => more inference competition => less profit from inference => less training competition
f311a•7m ago
> less training competition

I think you meant less research and experiments in big labs because they don't get all the AI money.

Training is expensive, but they also have more than 10 000 of employees combined and they cost a lot of money.

zozbot234
fahrradflucht•37m ago
License: https://huggingface.co/moonshotai/Kimi-K3/blob/main/LICENSE

> If the Licensee or any of its affiliates operates a Model as a Service business, and the aggregate revenue of the Licensee and its affiliates exceeds 20 million US dollars (or the equivalent in other currencies) in total over any consecutive 12 months, the Licensee must enter into a separate agreement with Moonshot AI before using the Software or its derivative works for any commercial purpose.

+ the existing 100 million monthly active users, or more than 20 million US dollars for commercial products have to name Kimi clause

throwaway27448•27m ago
I wonder how they'll figure out who to target for litigation when this license is violated.
ffsm8•24m ago
They haven't litigated the last public non-compliance... Despite that one being extremely public. So probably not at all for now.
Iolaum•22m ago
Maybe because a non public agreement was in place?
JumpCrisscross•19m ago
> They haven't litigated the last public non-compliance

What was it?

ffsm8
whimsicalism•30m ago
It's funny that we've finally returned to tanh activation functions, time is a circle.
a-dub•27m ago
knowledge graph guided task synthesis. very cool! i have long wondered about the "how do you get good coverage of all the tasks" problem.

maybe some interesting theoretical work there around the rate of production of new knowledge itself and various mechanisms (human approaches, mechanistic approaches, etc).

eamag•24m ago
Can someone explain what are teachers in Multi-Teacher On-Policy Distillation? I can imagine math, coding and other verifiable domains, but they also have biology? Is it where distillation from bigger models come in?
colesantiago•23m ago
This is amazing to witness. Moonshot open sourcing Kimi K3, a frontier AI and other components really means we are getting abundant AI for all of humanity.

Kudos to Moonshot for truly being what OpenAI should have been.

Fable-level and frontier AI should be open source and available to everyone for free.

embedding-shape•3m ago
> Kudos to Moonshot for truly being what OpenAI should have been.

Kudos to Moonshot for making these weights available for download. Lets not fool ourselves and claim these are "open source" by any understanding of the concept though, there are usage restrictions (even if you download them) and also training data isn't clearly broken down either, nor it it actually using a FOSS license.

eamag•22m ago
> we build a self-evolving, hierarchically organized knowledge graph that agents continuously expand through web-scale exploration across knowledge-intensive and coding domains

That's interesting!

lenerdenator•15m ago
What would it take to get an American open model to compete with this?
boomskats•9m ago
An act of G̶o̶d̶ Congress?
chrsw•6m ago
Something beyond my imagination
embedding-shape•4m ago
Latest "big" release from any of the bigger American lab must have been GPT-OSS-120b I think? Released ~summer 2026, so pretty much a year ago. Doesn't seem like it'll happen by itself, so something either forcing their hand figuratively, or something forcing their hand literally.
•
20m ago
Open source AI is actually a lot less "powerful" than genuine frontier models, i.e. it has a much tighter inherent capability ceiling. This is "decelerationist" from a purely AGI-pilled point of view but is actually great if you're worried about a capabilities arms race putting AI Safety at severe risk.

Kimi K3 is plausibly a lot less dangerous than a totally jailbroken ChatGPT/Gemini/Claude Sonnet (let alone Opus or Fable!) and it's quite deeply weird how no one seems to be calling for those models to be banned or restrained by further regulation. Why the double standard against the less concerning (but more efficient!) open weight models?

acedTrex•32m ago
Why?
•
17m ago
https://www.reddit.com/r/singularity/comments/1ryrs2w/cursor...
drawnwren•16m ago
Cursor was thought to be but they were later found to be using an authorized provider [1]

1 - https://x.com/Kimi_Moonshot/status/2035074972943831491?lang=...

paxys•15m ago
How many companies host and serve models via API and have a $20M+ revenue? Going to be pretty straightforward to catch offenders.
NitpickLawyer•27m ago
Interesting license. They basically added a "no composer / better models" if revenues (including downstream) above 20m clause, where you'd have to get a separate agreement with them.

Still has the attribution clause if serving this to your users.

Other than that, free to do whatever you want.

simonw•11m ago
Kimi 2.6 had the same janky license: https://huggingface.co/moonshotai/Kimi-K2.6/blob/main/LICENS... - looks like they've been doing that at least as far back as K2.

The models they released in 2025 - https://huggingface.co/moonshotai/models - were clean MIT. They started doing the "modified MIT" thing in January 2026 with moonshotai/Kimi-K2-Thinking

zozbot234•4m ago
To be clear, the restriction on "Model as a Service" past $20M yearly revenue is new to K3. K2.x had the attribution requirement for any commercial use with more than $20M monthly revenue.
simonw•3m ago
Good catch, thanks.
embedding-shape•7m ago
Hah, so much for "open weights" :D Fair enough, they're at least downloadable, shame they didn't end up being actually open, nor open source, the community had really high hopes for this. But again, still available for download, so better than nothing else I suppose.
jhonof•3m ago
Open source projects frequently have separate commercial licenses no? This isn't abnormal.