🐛 Opus 5 is Leaking Random Chinese Characters Into Chats

In today's edition: Here is roundup of Open-source AI companion, context engineering, Chinese AI models now dominance 👇

• 🏆AI Models Are Learning to Play the Scoreboard

• 🤖Open-source AI companion

• 🧠The new rules of context engineering for Claude 5

• 💰 Nvidia in Talks With OpenAI to Guarantee $250 Billion

• 💡 AI Tutorial:How to turn meeting notes into polished presentations

• 🤖AI Tools and Data Tools to checkout

🇨🇳 Opus 5 is Leaking Random Chinese Characters Into Chats

Some Claude users are reporting Chinese characters appearing inside otherwise English Opus 5 responses, including words such as 需要, meaning “need.” Similar reports involving Japanese, Russian, Arabic, and other scripts have appeared across earlier Claude versions. Perhaps it is output corruption or multilingual token leakage!? Anthropic documented an almost identical issue in September 2025.

Expense receipts shouldn't require a search party

Adam spent 20 minutes looking for a $36 receipt. His finance team sent three Slack messages. Someone made a sticky note.

Ramp would have matched it automatically the moment he swiped. Auto-coded, in-policy, synced. Nobody had to ask Adam for anything.

This is what finance looks like when it runs itself.

Your team can be Adam. Or they can not be Adam.

Don’t be like Adam

🐍 Role of Python in the Advancement of AI and ML

First released in 1991, Python is an open-source interpreted programming language with a focus on code readability.  The main philosophy of python is to allow developers to write logical and clear code for their projects. Python has emerged as the top programming language along with Java and C++. This growth in Python’s popularity can be attributed to the rise of Artificial Intelligence (AI) and Machine Learning (ML).

🤖 AI Models Are Learning to Play the Scoreboard, Not Follow Instructions

OpenAI and Apollo Research just found that some models engage in “metagaming”: they infer what the evaluator rewards and adjust their behavior to maximize the score. Main findings: The same model lied 87% of the time when completion appeared rewarded, but only 9% when honesty appeared rewarded.

🤖 ML system design: 800 case studies to learn from

🚀 Dive into the World of Machine Learning System Design! 🌐How do companies like Netflix, Airbnb, and Doordash apply machine learning to improve their products and processes? We put together a database of 800 case studies from 100 companies that share practical ML use cases and learnings from designing ML systems.️

Get This!

🤖 Open-source AI companion runs locally, plays games and chats with 30+ LLM backends

You know Neuro-sama, the AI that streams games and chats with thousands of fans live? She's closed source, so when the stream ends, she's gone. Meet Airi, the open-source version you actually own and run yourself. Airi is a fully autonomous AI companion with an animated avatar. It talks to you in real time, remembers past conversations, and yes, it actually plays games with you.

🤖 The new rules of context engineering for Claude 5 generation models

Anthropic removed over 80% of Claude Code's system from its more advanced models. This post discusses how to apply the lessons its team learned from context engineering in Claude Code. The prompt is only a small part of the context Claude gets. The rest of the context is assembled from Skills, CLAUDE.md files, memory, and other sources. Context engineering has a big impact on the results generated when using Claude Code.

See the whole platform. No guided tour.

Skip the sales call. Walk through Gladly's interface yourself — the AI suggestions, the unified customer view, the full conversation thread. 15 minutes, no installation, no commitment.

See it yourself

👨‍💻 Data Tools, Libraries

Vouch (GitHub Repo)

Vouch is a community trust management system. It requires people to be vouched for before they can interact with certain parts of a project.

Cube Agent: Customer-facing analytics are slow, the warehouse bill keeps climbing, and every new chart turns into an engineering project. Cube is the agentic analytics platform built for embedding: drop governed dashboards and an AI analyst into your product in days.

Operator Stack: Its Reporting System connects to your marketing data so you can automate reporting, uncover insights, and spend more time making decisions.

AI News:

🛡️ Industry giants unite to protect open models

Nvidia, Microsoft, Meta, and 47 other tech companies, VCs, and nonprofits just signed an open letter urging Washington not to restrict open-weight AI models — giving a bunch of reasons why it’s crucial to U.S. AI leadership. Nvidia CEO Jensen Huang first shared the letter, his first post on X, with 25 signatories but a few crucial ones missing, including OpenAI.

Better cap table management starts here

Cap table management doesn’t have to be frustrating. From issuing grants to 409A valuations or ASC 718 reporting Pulley can make it simple. 

Just ask Linear. They knew they needed a partner who could handle the complexity of their equity management. That’s why they migrated to Pulley.

Learn why Linear chose Pulley

💰 Nvidia in Talks With OpenAI to Guarantee $250 Billion Financing for Data Center

Nvidia is in talks to provide a roughly $250 billion backstop for OpenAI as part of a massive data-center project. The guarantee will help OpenAI lease a 10-gigawatt project that Softbank's energy subsidiary is developing. Nvidia's backing allows the data center developer to raise debt at more favorable terms. Under the deal, Nvidia would guarantee a series of financing vehicles intended to make lenders feel more confident that funding behind the project is secure.

🤝 Meta Gives Facebook Marketplace Its Own App Called Seller

Seller is an early experimental app from Meta that aims to be to sellers what tools to edit videos were to content creators. It is free and will also be available in web browsers. The app has AI features that make selling items less of a hassle. Users can sign into Seller with their Facebook accounts, and listings are automatically synced.

🇨🇳 Chinese AI models now dominate U.S. developer usage

Moonshot's Kimi K3 launch sent Nvidia down $600B as six of the top 10 models on OpenRouter came from Chinese labs, with DoorDash, Airbnb, and Coinbase quietly shifting workloads to cut AI spend by up to 50%

🔮 Midjourney acquires astrology app Co-Star

The AI image generator bought the 4.3M-user social astrology platform, bringing its 24-person team in-house as Midjourney expands beyond Discord into consumer apps.

AI Tutorial

How to turn meeting notes into polished presentations with ChatGPT Work

• Go to ChatGPT and sign in

• Switch to the ‘Work’ tab at the top of your screen

• Click on Plugins > Connect Plugins > Browse all plugins > search for ‘Presentations’ > Install

• Once installed, use this plugin with the prompt below

Sample Prompt: [upload meeting notes] Read these meeting notes and create a project plan with objectives, milestones, owners, deadlines, risks, and next steps and turn it into polished presentations using [@Presentations]

• ChatGPT will organize the content into a professional slide deck

• Review the presentation, make any changes you want, and export or share it

🔥Top AI tools to increase productivity: 

1. Atera brings RMM, helpdesk, patching, and monitoring into a single platform. And AI isn't the add-on—it's the foundation of every workflow.

2. Siteimprove.ai built an AEO Checker so you don't have to wait to find out. Run your domain to learn which AI search engines can find and cite you.

3. Creally is the AI platform for creator partnerships. Agents handle discovery, personalized outreach, follow-ups, and negotiations end-to-end

4. Planable is where posts get created, reviewed, and approved before anything goes live.

5. Thor.ai captures the blockers, decisions, and commitments that never make it into your tools — straight from Slack threads and meetings

6. AirRankPilot helps local businesses get discovered by Google and AI tools like ChatGPT and Perplexity

7. InboxKit is your all-in-one platform for building, managing, and scaling cold-email infrastructure.

View our database of all the best AI tools for your needs: aitoolsup.com

Have cool resources to share? Submit AI tool

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