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I Built a Fully Offline Grammarly Alternative as a Mac App — Without Writing a Single Line of Code

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I Built a Fully Offline Grammarly Alternative as a Mac App — Without Writing a Single Line of Code

Imagine writing a complete article while seated on a turbulent airplane, with no internet connection, yet still having a reliable grammar checker at your fingertips. That is exactly what I did. Using only my voice and a conversational AI tool, I created a fully functional offline Grammarly alternative that runs directly on my Mac. No coding skills, no subscriptions, and no privacy compromises. Here is how it happened.

Why I Needed an Offline Grammar Checker

As a professional editor, I write constantly. Grammarly has been my go-to tool for years, but it comes with baggage. The constant need for an internet connection is a real pain point. On flights, in remote cafes, or anywhere with spotty Wi-Fi, I am left without help. Moreover, Grammarly’s recent shift toward AI-heavy suggestions has frustrated me. Sometimes it offers verbose rewrites that change my voice entirely. Other times, it misses basic spelling errors.

Privacy is another major concern. Every keystroke gets sent to the cloud for analysis. I wanted something that keeps my data local. Building my own offline grammar checker seemed like the perfect solution.

How I Built the App Without Any Coding

Claude AI Did All the Heavy Lifting

I started by opening the Claude mobile app on an Android tablet. I simply narrated my requirements: I wanted a spell-checking tool that works fully offline, is fast, and respects privacy. Claude suggested three possible approaches. I chose the one that used the Harper engine, an open-source grammar library acquired by Automattic in 2024.

Within 30 minutes, I had a working prototype. The first version ran as a standalone website in a browser tab, no internet required. The second became a Chrome extension. The final version is a full Mac menu bar app I named Quill. It combines note-taking with grammar correction and even offers one-click export to Apple Notes.

The entire process required zero lines of code from me. Claude generated the HTML, JavaScript, and configuration files. I only needed to open Xcode to build the app icon, which Claude also designed.

Why the Harper Engine Is a Game-Changer for Privacy

Automattic’s Harper engine processes everything locally on your device. It takes just 20 milliseconds to analyze text and suggest corrections. Unlike AI models that rely on token-based predictions, Harper uses hard-coded language rules. This means no verbose suggestions trying to change your writing style. It simply catches spelling mistakes and grammatical errors.

The trade-off? The app size increased from 10MB to 25MB when I embedded the Harper engine directly. But in an era where calculator apps can consume hundreds of megabytes, 25MB is negligible. The result is a privacy-first spell checker that never phones home with your data.

Limitations of My DIY Grammar Tool

Harper is not perfect. For example, it fails to flag obvious errors like “My name John” or “What your name?”. These basic subject-verb agreement issues slip through. However, for standard writing tasks, it catches the vast majority of typos and double spaces. The speed and offline capability more than compensate for these occasional misses.

Building on this, I have already tested the tool with half a dozen colleagues across Mac and Windows. They were impressed by its speed and accuracy. For anyone tired of subscription fees or privacy invasions, this approach offers a compelling alternative.

The Bigger Lesson: AI Puts You in Control

This experiment taught me something profound. The barrier to creating custom software has never been lower. A year ago, I would have laughed at the idea of building a Mac app from an Android tablet. Today, I have three working versions of my own offline Grammarly alternative.

Claude and similar AI tools are democratizing software development. You don’t need to learn Python or Swift anymore. You just need a clear idea and the willingness to describe it. This shift puts power back in the hands of everyday users.

If you are tired of cloud-dependent tools and want to explore offline productivity tools, consider building your own. Start with a simple project like a grammar checker. You might be surprised at what you can achieve.

For more on protecting your digital privacy, check out our guide on privacy-focused writing apps. And if you are curious about other AI-assisted projects, read about building apps without code.

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Artificial Intelligence

ChatGPT just got a lot less needy: Meet the GPT-5.6 family (Sol, Terra, Luna)

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GPT-5.6 Sol

OpenAI just dropped three new models — and the biggest change is how little you’ll need to babysit them

If you’ve ever asked OpenAI‘s ChatGPT to plan a weekend trip, you know the drill. First you ask for destination ideas. Then you ask for hotels. Then restaurants. Then an itinerary. Then you stitch it all together yourself. It’s like managing an intern who needs step-by-step instructions for everything.

That era might be ending. Today, OpenAI officially unveiled the GPT-5.6 family — three new models rolling out across ChatGPT, Codex, and the API. The flagship is GPT-5.6 Sol, joined by two cost-efficient siblings: Terra and Luna. The pitch is simple: these models do more on their own, with far fewer follow-up prompts.

Sol is the workhorse — and it comes with an Ultra mode

GPT-5.6 Sol is built for heavy lifting. OpenAI says it delivers better performance while burning fewer tokens than previous models. That’s a big deal for developers and businesses watching their compute costs.

The headline feature is Ultra mode. Instead of running a single AI process, Ultra splits complex tasks across multiple AI agents working in parallel. Think of it like assigning research, writing, editing, and fact-checking to four specialists instead of asking one person to do everything. OpenAI claims this speeds up problem-solving and improves final output quality.

For example, a coding project that used to require a dozen back-and-forth prompts might now get handled in one go. The model writes small programs, uses tools, checks its own progress, and decides what to do next — all with less hand-holding from you.

Terra and Luna: cheaper, faster, still capable

Not everyone needs the full power of Sol. That’s where GPT-5.6 Terra and GPT-5.6 Luna come in. These models are designed to handle everyday AI tasks — answering questions, summarizing text, light code work — at a significantly lower cost.

OpenAI says both models outperform competing options in their respective price brackets. For developers building AI-powered apps, that could mean better results without blowing the budget. The company hasn’t released exact pricing yet, but the message is clear: you no longer have to pay for Sol-level power just to get decent responses.

Max mode for accuracy, Ultra for complexity

OpenAI is also introducing a Max mode alongside Ultra. Max gives GPT-5.6 extra time to think through difficult questions, test different approaches, and double-check its work before responding. If accuracy matters more than speed — say, for legal research or financial analysis — Max is the setting to use.

Ultra goes further by deploying multiple AI agents simultaneously, trading extra computational power for better results on demanding jobs. The two modes give users a clear choice: speed, accuracy, or brute-force parallel processing.

Safety testing gets a major upgrade

OpenAI says the GPT-5.6 family went through its most extensive safety evaluation yet. The company combined human red-team exercises with automated evaluations to make the models more resistant to misuse — without restricting legitimate use. That’s a balancing act the industry has struggled with, but OpenAI says the new approach yields better guardrails.

When can you try it?

The GPT-5.6 family is rolling out today across ChatGPT, Codex, and the OpenAI API. Global availability should expand over the next 24 hours. For most ChatGPT users, the benchmark numbers won’t matter much. What will matter is whether the model actually saves you time.

Fewer prompts. Bigger tasks handled autonomously. Answers that require less back-and-forth. If OpenAI’s claims hold up, that could be the most practical upgrade in years. No more babysitting an AI that needs constant instructions — just give it the job and let it run.

For a deeper look at how OpenAI’s models compare, check out our guide to ChatGPT vs. Claude vs. Gemini: which AI assistant wins in 2025. And if you’re curious about image generation, read about how to send HD photos on WhatsApp — yes, AI is creeping into every app now.

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Bristol Myers Squibb buys Nvidia AI system for drug discovery

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Bristol Myers Squibb Nvidia AI

Bristol Myers Squibb invests in Nvidia’s latest AI supercomputer for drug discovery

Bristol Myers Squibb (BMS) is purchasing an Nvidia DGX SuperPOD powered by the chipmaker’s Vera Rubin architecture. The move marks the first time a life sciences company has acquired this specific system, designed to supercharge artificial intelligence across drug discovery and development.

The pharmaceutical giant said the new cluster will consist of eight DGX Vera Rubin NVL72 systems, each combining Nvidia Vera central processing units with Rubin graphics processing units. Financial terms were not disclosed.

Expanding computing capacity for research

BMS will use the infrastructure to train proprietary models and run predictions across its research programs. The system will handle work involving compounds, proteins, and other scientific data. This purchase expands BMS’s existing Nvidia infrastructure, which includes an older SuperPOD that company executives described as two or three generations behind Vera Rubin.

BMS has operated its current DGX SuperPOD for about three years. The company plans to combine it with the Vera Rubin system in a shared computing environment accessible from its research sites worldwide. The SuperPOD software stack can schedule training, prediction, and development workloads across the infrastructure. BMS said the expanded environment will give more scientists direct access to its computing resources.

Greg Meyers, BMS’s chief digital and technology officer, said computing requirements have increased as the company deploys larger AI models across its research organization. Erin Davis, vice president of research business insights and technology at BMS, said the existing infrastructure is operating at capacity. She attributed the demand to large-scale predictions involving large molecules and the development of internal foundation models.

Davis said the new system will not be limited to a small group of computational researchers. BMS plans to make it available across the research organization without the waiting periods and access limits associated with its current infrastructure.

Applying AI in drug discovery

BMS said AI informs the design of every small-molecule program and the majority of its large-molecule programs. The technology is applied to target identification, lead optimization, large-molecule predictions, and internal model development. The company said AI-enabled target identification has reduced some manual research work by several weeks. Large-molecule prediction workloads are also contributing to demand for additional graphics processing capacity.

Robert Plenge, BMS’s chief research officer, said the new system will allow scientists to evaluate more potential drug candidates during the early stages of development. “Maybe before we could do 10 and now we can do dozens,” Plenge said.

Computational screening allows researchers to assess potential compounds before selecting a smaller group for synthesis and laboratory testing. BMS applies this approach through a method it calls “Predict First,” which uses model-generated predictions to exclude molecules that do not meet the required properties before candidates are selected for synthesis.

Payal Sheth, senior vice president of therapeutic discovery sciences at BMS, said researchers use the predictions to identify molecules with the required combination of properties. “We use predictions as a way to prioritise synthesis of molecules with multi parameter optimisation,” Sheth said. “This ensures precious laboratory experiments are aligned with progressing molecules that have the highest probability of success.”

The method narrows the number of compounds sent for laboratory testing, allowing researchers to focus experiments on molecules that meet a program’s predicted requirements.

AI accelerates CELMoD compound development

BMS has also used AI to expand its library of CELMoD compounds, which are engineered to selectively degrade cancer-causing proteins. The company is studying the compounds in blood cancers and other diseases. BMS said the modeling work helped researchers examine additional protein targets and potential compounds before deciding which candidates to pursue experimentally.

The company is also using AI tools to shorten the time required to produce medicines for clinical trials. Plenge said the process has already been reduced by between 20% and 30% and could reach 50% in the coming years. He cited an experimental sickle cell disease treatment in early clinical development as one example of AI-supported research. Plenge said the treatment probably would not have been discovered without the company’s AI tools.

The figures refer to the time required to identify and produce candidates for clinical testing rather than their subsequent performance in trials.

BioNeMo toolkit enhances research capabilities

The Vera Rubin system will also give researchers access to Nvidia’s BioNeMo Agent Toolkit for biological and drug-discovery applications. BioNeMo provides tools for protein-structure prediction, molecular generation, molecular docking, sequence analysis, and genomics. It can also connect several computational tools within the same research workflow. BMS executives said human researchers will continue to review model outputs and decide which compounds or programs should advance.

Connecting research sites with unified infrastructure

BMS is introducing tools intended to reduce the specialist knowledge required to initiate complex computing tasks. The company said researchers will be able to start some prediction requests using natural-language instructions. The environment will be managed through Nvidia Mission Control, whose functions include cluster provisioning, infrastructure monitoring, and workload management, according to BMS.

The unified infrastructure will allow data and model outputs generated at one site to be used by teams elsewhere. BMS said datasets from a program in Lawrenceville, New Jersey, for example, can be incorporated into models used by researchers in San Diego. Sheth said the shared environment is intended to retain information from experiments and research programs across the organization.

“The compute infrastructure is what connects all of our scientists together and ensures that our learnings are institutionalised,” Sheth said.

The two SuperPODs will operate through a common data environment, allowing teams at different sites to access shared datasets and model outputs. BMS said the environment will include information from experiments, clinical readouts, and research partnerships. The company plans to allocate the new computing capacity across small- and large-molecule design, clinical research, and digital-twin applications. BMS did not provide details about the planned digital-twin work or the amount of capacity assigned to each area.

Performance gains and energy efficiency

Meyers said the Vera Rubin system will provide more computing capacity relative to its electricity use. BMS and Nvidia said the eight-system cluster will deliver up to 10 times the performance per megawatt of the infrastructure it replaces. “When you host these things, you have to pay an electric bill,” Meyers said. “Think of it as 10 times more compute capacity per watt spent … Electricity is not getting cheaper.”

BMS did not provide a specific deployment date or identify where the new system will be hosted.

For more on how AI is transforming the pharmaceutical industry, see AI-powered drug discovery trends and Nvidia’s role in healthcare AI.

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Google’s $180 Billion AI Bet Starts Paying Off as Cloud Revenue Soars

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Google Cloud revenue

The Cloud Is the Engine Now

For months, Wall Street has been asking the same question: Is Google spending too much on artificial intelligence? The company’s latest earnings report offers a clear answer — not yet.

Alphabet’s cloud business just delivered its best quarter ever. Google Cloud revenue hit $24.8 billion, an 82% jump from the same period last year. That handily beat the $22.46 billion analysts had predicted. Even more telling: last quarter’s growth was already a robust 63% to $20 billion. The acceleration is real.

What’s driving it? Enterprise AI adoption. Companies are buying into Google’s AI infrastructure and enterprise AI solutions at a furious pace. The cloud contracting backlog — work signed but not yet billed — now stands at a staggering $514 billion.

Profit Explodes, Revenue Hits New Highs

The numbers go beyond cloud. Alphabet’s quarterly profit soared to $112.1 billion, up from just $28.1 billion a year ago. Total revenue climbed 24% year-over-year to $119.8 billion. Even the core Google Services segment grew 15% to $94.5 billion.

This marks the company’s 12th consecutive quarter of double-digit revenue growth. But even by that standard, this quarter stands out. Alphabet earnings reports rarely show this kind of acceleration across every major business line.

Gemini Hits 950 Million Users

Google’s AI chatbot, Gemini, is also gaining traction. The app now has 950 million monthly active users, up from 750 million in Q4 2025. That’s a 27% increase in just a few months.

CEO Sundar Pichai summed it up during Wednesday’s earnings call: “Our AI investments are redefining what’s possible across every part of our business. We have exciting momentum across the board.”

The $180 Billion Question

Alphabet isn’t slowing down its spending. Capital expenditures — the money poured into data centers, chips, and infrastructure — are projected between $180 billion and $190 billion for the year. Analysts pressed Pichai hard on when those investments will actually pay off.

His answer was specific: “I think our compute capacity investments in ’27.” He pointed to “strong demand indicators, including long-term deals” and added that “the dynamics look healthier than where we were about a year ago.”

In other words, the payoff isn’t imaginary. It’s just not fully here yet.

What This Means for Investors

For anyone worried that AI spending is a black hole, the cloud numbers offer real evidence otherwise. Enterprise customers are voting with their wallets, and Google is collecting the revenue. The $514 billion backlog means future quarters are already largely locked in.

That doesn’t mean the risk is gone. Spending at this level is unprecedented. But the cloud business is now big enough — and growing fast enough — to justify the bet. If you’re tracking enterprise AI adoption trends, Google just became the strongest case study yet.

The next milestone? 2027. That’s when Pichai expects the infrastructure buildout to start generating its full return. Until then, the cloud numbers will keep telling the story.

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