Once the itemized statement arrives open Claude or ChatGPT and type: "I am going to paste my hospital itemized bill. Please review every line and flag anything that looks like a duplicate charge, a charge for a procedure not typically performed alongside the others, or anything
TOOLS
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GPT-5.5 Improves Codex Efficiency With Fewer Tokens
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GPT-5.5 uses significantly fewer tokens for the same Codex tasks. In general, you should expect better capability with fewer tokens vs GPT-5.4, not an increase!
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DeepSeek V4 Offers Cheapest Models Near Frontier Performance
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More of my notes on DeepSeek V4 – the really big news is the pricing: both DeepSeek-V4-Flash and DeepSeek-V4-Pro are the cheapest models in their categories while benchmarking close to the frontier models from other providers https://
simonwillison.net/2026/Apr/24/de
epseek-v4/
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Google Reshapes Search Maps and AI Agents With Reasoning AI
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Google And The Future Of Search, Maps And AI Agents #Google is reshaping #Search, #Maps, and digital assistance around #AI that can reason, personalize results, and increasingly take action, while keeping trust and user control at the center. In this conversation with Google
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DeepSeek Flash vs Pro Pelican Image Generation via OpenRouter
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These pelicans are kind of angry looking! Left is deepseek-v4-flash, right is deepseek-v4-pro – both generated using OpenRouter via my LLM tool
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OpenAI Launches Workspace Agents for ChatGPT Business Plans
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🚨OpenAI just rolled out Workspace agents in ChatGPT for Business, Enterprise, Edu & Teachers plans
— Futurepedia – Learn to Leverage AI (@futurepedia_io) 24 avril 2026
Build an agent once and share it across your workspace to automate multi-step workflows – from pulling data in Drive/SharePoint to taking action in Slack, Salesforce, Notion &… pic.twitter.com/nuWHxgXQx8OpenAI just rolled out Workspace agents in ChatGPT for Business, Enterprise, Edu & Teachers plans Build an agent once and share it across your workspace to automate multi-step workflows – from pulling data in Drive/SharePoint to taking action in Slack, Salesforce, Notion &
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Newsletter Covers GPT-4.5, ChatGPT Images, Qwen3 and Agentic Patterns
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This week's edition of my email newsletter features 4 pelicans riding bicycles, 1 possum on an e-scooter, up to 5 raccoons with ham radios hiding in crowds, 5 blog posts, 8 links, 3 quotes and a new chapter of my Agentic Engineering Patterns guide https://
simonw.substack.com/p/gpt-55-chatg
pt-images-20-qwen36-27b
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Sakana AI Fugu Launches Beta API with Recursive Test-Time Scaling
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One of my favorite things about Sakana Fugu is the recursive test-time scaling. When allowed to call itself recursively, it reads its own prior output and spins up corrective workflows on the fly. We are opening up the API for beta testers to try it out: https://
sakana.ai/fugu-beta/