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Claude Sonnet 4.5 System Card [pdf]

https://assets.anthropic.com/m/12f214efcc2f457a/original/Claude-Sonnet-4-5-System-Card.pdf
36•synthwave•1h ago

Comments

dang•45m ago
Comments moved to https://news.ycombinator.com/item?id=45415962, which was posted a bit earlier.

We'll put the system card link in the toptext there too.

(Sorry synthwave! - it's on our list to implement a karma sharing system for cases like this so multiple submitters can get the 'credit' for a post...)

Help Me Find Missing Issues of Australian Personal Computer

https://blog.decryption.net.au/posts/apc-callout.html
1•naves•27s ago•0 comments

LoongArch Reference Manual

https://loongson.github.io/LoongArch-Documentation/LoongArch-Vol1-EN.html
1•welovebunnies•1m ago•0 comments

The new light of Jony Ive's life

https://www.wallpaper.com/design-interiors/lighting/jony-ive-lovefrom-balmuda-sailing-lantern
1•Nrbelex•3m ago•0 comments

Claude 4.5, AI Biology and World Models

https://cmpld.ai/issues/003/
1•mantcz•5m ago•0 comments

Mexico: Tax Code reform seeks permanent access to data from digital platforms

https://articulo19.org/reforma-al-codigo-fiscal-pretende-acceso-permanente-a-datos-de-plataformas...
1•CharlesW•5m ago•0 comments

Ask HN: Any local agents to help repetitive browser tasks?

2•pcdoodle•7m ago•0 comments

Claude Sonnet 4.5 is probably the "best coding model in the world", at least now

https://simonwillison.net/2025/Sep/29/claude-sonnet-4-5/
1•coloneltcb•7m ago•0 comments

RealClimate: "But you said the ice was going to disappear in 10 years "

https://www.realclimate.org/index.php/archives/2025/09/but-you-said-the-ice-was-going-to-disappea...
2•speckx•9m ago•0 comments

DIY Flight Simulator Motion Rig [video]

https://www.youtube.com/watch?v=YphV5v7aZSg
1•gregsadetsky•9m ago•0 comments

Kagi Translate appears to be down - giving HTTP 400 false positive

1•casenmgreen•9m ago•0 comments

99% of heart attack, stroke cases linked to preventable risk factors

https://www.medicalnewstoday.com/articles/heart-attack-stroke-heart-failure-linked-to-preventable...
2•akyuu•10m ago•0 comments

Olly – AI Native Observability

https://olly.new
1•pranay01•11m ago•0 comments

Why the Hertz-Amazon deal poses threats to auto dealers

https://www.cnbc.com/2025/09/29/hertz-amazon-auto-dealers.html
1•e2e4•12m ago•0 comments

An insurance company is introducing a new threat to American medicine

https://www.statnews.com/2025/09/29/cigna-downcoding-prior-authorization-doctors-bureaucracy/
2•bikenaga•14m ago•0 comments

Learn Kubernetes Security book, second edition just published

https://www.amazon.com/Learning-Kubernetes-Security-containerized-environments-ebook/dp/B0F5VZ3CRX
2•bernardoortega•14m ago•0 comments

Energy Dept. adds 'climate change' and 'emissions' to banned words list

https://www.politico.com/news/2025/09/28/energy-department-climate-change-emissions-banned-words-...
11•doener•15m ago•0 comments

The Handoff to Bots

https://kevinkelly.substack.com/p/the-handoff-to-bots
3•thm•17m ago•1 comments

DuckDB can be 5x faster than Spark at 500M record files

https://blog.dataexpert.io/p/duckdb-can-be-100x-faster-than-spark
1•peterdstallion•17m ago•1 comments

Photos show 44,000-year-old mummified wolf discovered in Siberian permafrost (2024)

https://www.livescience.com/animals/extinct-species/stunning-photos-show-44000-year-old-mummified...
1•binning•18m ago•1 comments

Buckley Institute Releases Eleventh Annual National Undergraduate Student Survey

https://buckleyinstitute.com/buckley-institute-releases-eleventh-annual-national-undergraduate-st...
1•mhb•18m ago•0 comments

A DHT for iroh – Part 1, The Protocol

https://www.iroh.computer/blog/lets-write-a-dht-1
1•g0xA52A2A•18m ago•0 comments

When AI is trained for treachery, it becomes the perfect agent

https://www.theregister.com/2025/09/29/when_ai_is_trained_for/
2•rntn•18m ago•0 comments

Omi – A Fast Pokémon Card Scanner

https://tcgscanneromi.com/
1•crovillas•19m ago•1 comments

Finding stillness and focus in the chaos of open source

https://ruthcheesley.co.uk/blog/buddhism/finding-stillness-and-focus-in-the-chaos-of-open-source
1•mooreds•19m ago•0 comments

Offshore to onshore: Europe expands carbon storage with nature-inspired tech

https://projects.research-and-innovation.ec.europa.eu/en/horizon-magazine/offshore-onshore-europe...
1•PaulHoule•20m ago•0 comments

First highway sign with Superchargers, more to come

https://twitter.com/TeslaCharging/status/1970987475951903142
1•toomuchtodo•20m ago•0 comments

Beyond Reading the RFC: How to Shape Identity Standards

https://ciamweekly.substack.com/p/beyond-reading-the-rfc-how-to-actually
1•mooreds•20m ago•0 comments

DeepSeek-v3.2-Exp: Long-Context Efficiency with DeepSeek Sparse Attention [pdf]

https://github.com/deepseek-ai/DeepSeek-V3.2-Exp/blob/main/DeepSeek_V3_2.pdf
1•g42gregory•21m ago•0 comments

Agentic Commerce Protocol

https://developers.openai.com/commerce/guides/get-started/
1•brandonb•22m ago•1 comments

Cloudflare Confidence Scorecards to Deal with Shadow IT/AI

https://blog.cloudflare.com/cloudflare-confidence-scorecards-making-ai-safer-for-the-internet/
1•nilsandrey•23m ago•0 comments