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Ask HN: How does structured output from LLMs work under the hood?

2•dcreater•17h ago
OpenAI, Ollama, LiteLLM python packages allow you to set the response format to a Pydantic model. As I understand that this just, serializes the model into a JSON. Is the JSON then just passed as context to the LLM and the LLM asked to adhere to the provided JSON? Or is there something more technical/deterministic happening that constrains the output to the JSON format provided?

Istio 1.26.0

https://istio.io/latest/news/releases/1.26.x/announcing-1.26/
1•crb•12m ago•0 comments

"Blackford PI" – a retro detective mystery indie game

https://bitglint.itch.io/blackford-pi
1•goshki•14m ago•0 comments

I Coded ANOTHER Profitable App SOLO (step by step / from scratch / with AI) [video]

https://www.youtube.com/watch?v=cESaIUWoCJQ
1•nsoonhui•15m ago•0 comments

Non-Obvious Problems

https://www.ryanhoover.me/post/non-obvious-problems
1•vortex_ape•16m ago•0 comments

Trump's stablecoin chosen for $2B Abu Dhabi investment in Binance

https://finance.yahoo.com/news/wlfs-zach-witkoff-usd1-selected-093046535.html
2•throw0101d•17m ago•0 comments

American Panopticon

https://www.theatlantic.com/technology/archive/2025/04/american-panopticon/682616/
2•throw0101b•18m ago•1 comments

JavaScript Temporal – is it here?

https://bryntum.com/blog/javascript-temporal-is-it-finally-here/
1•ritzaco•19m ago•0 comments

RevOps and Data when scaling from Seed to Series C+

https://getairbook.notion.site/The-Funnel-OS-How-to-report-on-your-funnel-from-Seed-to-Series-C-and-beyond-1d8d4a82803d807fa593c37235692b09
1•Hoshang07•21m ago•0 comments

iVentoy installing unsafe Windows Kernel drivers

https://github.com/ventoy/PXE/issues/106
2•baobun•22m ago•0 comments

Gravity generated by four one-dimensional unitary gauge symmetries

https://iopscience.iop.org/article/10.1088/1361-6633/adc82e
1•sl-1•23m ago•0 comments

UK experiments to reflect sunlight one step closer

https://www.bbc.co.uk/weather/articles/c5ygydeqq08o
1•davethedevguy•27m ago•0 comments

Show HN: FeedBagel – RSS Feed Finder API with AI-Categorized Directory

https://feedbagel.com/
2•graylien•36m ago•0 comments

Show HN: Data Enrichment with AI for Pandas DataFrame

https://github.com/mljar/enrichment
2•pplonski86•41m ago•1 comments

Xenon is an open source universal game cheating framework C++

https://github.com/kiocode/xenon-cheats
1•everestkio•42m ago•1 comments

AI Is Making Developers Lazy: RIP Core Coding Skills

https://www.darrenhorrocks.co.uk/ai-making-developers-lazy-rip-core-coding-skills/
2•signa11•47m ago•0 comments

Platform Power Is Underrated

https://stratechery.com/2025/platform-power-is-underrated/
2•retskrad•51m ago•0 comments

Where Are the Small Phones?

https://www.mobiletime.com.br/colunistas/06/05/2025/rodrigo-ghedin-celulares-pequenos/
3•rpgbr•55m ago•0 comments

Cheap SSL Certificates

https://cheapsslweb.com
1•Moni_Mac•55m ago•2 comments

Building a Regex Engine

https://sh4dy.com/2025/05/01/regex_engine/
3•sebg•57m ago•0 comments

Navy finds something the LCS is good at: Stopping drug smuggling

https://taskandpurpose.com/news/navy-lcs-drug-smugglers/
1•PaulHoule•58m ago•1 comments

Show HN: An AI-first visual editor using GPT-4o's GPT-image-1 model

https://img.ly/blog/ai-first-visual-editor-for-gpt-4o-image-gen/
17•buss_jan•58m ago•7 comments

Amazon to Invest $4B in Chile AWS Data Centers

https://newscvg.com/coverage/business-economy/amazon-to-invest-4b-in-chile-aws-data-centers-1QA7Kn5Yn
2•ops_endurrra•59m ago•1 comments

Show HN: One-Line Installer for Cursor on Linux

https://github.com/t128n/cursor-linux
1•trbndev•1h ago•0 comments

Beautiful Concurrency (2007) [pdf]

https://www.microsoft.com/en-us/research/wp-content/uploads/2016/02/beautiful.pdf
1•romes•1h ago•0 comments

Efforts Grow to Thwart mRNA Therapies

https://www.nytimes.com/2025/05/08/us/mrna-vaccines-backlash-covid.html
2•perihelions•1h ago•1 comments

OSS: Two Steps Forward, One Step Back

https://redmonk.com/sogrady/2025/05/06/oss-forward-back/
1•ABS•1h ago•0 comments

Reddit will tighten verification to keep out human-like AI bots

https://old.reddit.com/user/spez/comments/1kfciml/reddits_next_chapter_smarter_easier_still_human/
2•thm•1h ago•0 comments

Bird flu in cats points to risk of another pandemic

https://phys.org/news/2025-05-bird-flu-cats-pandemic.html
5•pseudolus•1h ago•0 comments

WhatsApp provides no cryptographic management for group messages

https://arstechnica.com/security/2025/05/whatsapp-provides-no-cryptographic-management-for-group-messages/
3•pseudolus•1h ago•0 comments

Agatha Christie, Who Died in 1976, Will See You in Class

https://www.nytimes.com/2025/05/08/world/europe/agatha-christie-ai-class-bbc.html
2•mitchbob•1h ago•1 comments