2026

Instead of learning and applying new Codex features, I asked it to analyze my sessions and tell me what I’m under-using. I'd like you to analyze my Codex sessions and help me use Codex better. sessions/ has all my past Codex sessions. Search online for the OpenAI Codex release notes for the latest features Codex has introduced and read them - from whatever source you find them. Then, create a comprehensive catalog of Codex features. Then, analyze my sessions and see which feature I could have used but didn't and make a comprehensive list. Then summarize which features I should be using more, how, what the benefits are, and with examples from my sessions. Document these in one or more Markdown files in this directory. Write scripts as required. Commit as you go. It did a thorough job of listing all the new features and analyzing my gaps. ...

I have a GitHub Education since I teach at IITM. But if I switch back to a free account, how much would I need to pay? I asked Codex (5.3, xhigh): My GITHUB_TOKEN is in .env. Go through my GitHub billing. Ignore the $100 sponsorships I make. Other than that, my current metered usage is $6.71 for Feb 2026 (which is included in my billing plan). $0.35 comes from sanand0/exam and $0.34 from sanand0/blog and so on. That’s coming mostly from “Actions Linux”, occasionally “Actions Storage”. Pick a few of the top repos and tell me what I should do to make the cost zero - or reduce the cost as much as possible. See if there’s a pattern across repos. ...

Kanata might be the most useful tool I can’t find a use for. It’s a cross-platform keyboard mapper. Some cool features: Make any key a modifier. Ctrl, Shift, Alt, etc. are modifiers. But we can make it so that pressing Space + I/J/K/L maps to Up/Left/Down/Right. Chords. You can map any sequence of keys to anything else. For example, Alt + G, then C can type git commit -m"Experimenting" [ENTER]. Ctrl + M, then Down, can reduce the music volume by 10%. Toggles. Double-clicking Caps Lock activates capitalization for the current word, and once you type a non-letter, it turns off. Or double-clicking Ctrl can turn on “gaming mode” where WASD becomes arrow keys, and double-clicking again turns it off. Tap Dance. Double-clicking left-shift can turn on Caps Lock. Triple-clicking turns it off. Quadruple-clicking … … and there’s lots more. ...

My current favorite prompt fragment is the expert lens: Think like an expert. In this context: - What patterns would an expert in this field check / recognize that beginners would miss? - What questions would an expert ask that a beginner would not know to? - What problems / failures would an expert anticipate that beginners may not be aware of? - How would an expert analyze this? At each step, explain what they are looking for and why. When I add this to my questions, if feels a lot smarter. ...

This week, I learned: unidown is a Rust CLI tool that converts Markdown to Unicode characters - useful for LinkedIn. 3 years into Nestle, Sangeeta Talwar (who was selling Maggi soup cubes) took the “Maggi Instant Noodles” (popular in Malaysia), changed it to “2-minutes”, realized that noodles are fun for kids to play with, invented the masala flavor, positioned it as easy for moms, distributed hanging baskets (rodent-safe, brand visibility) at stores, marketed on TV and in stores, etc. Gemini Nano Banana Pro 2 is out. Better text, better instruction following. codespelunker is a fast CLI code search tool. Just run cs for an interactive search. It feels light and fast, like ug. lobste.rs Shadow IT is unpaid R&D, not a security threat. When frustrated marketing or sales teams secretly buy their own software tools and bypass the IT department, traditional companies try to ban them. Transformed companies study them. “Shadow IT” is a highly accurate heat map pointing exactly to where your current systems are failing and where the immediate business value lies. Source: CIO.com, Gartner: Business-Led IT Coding agents have introduced a “Usage” page to check your usage: Claude usage and ChatGPT usage. Both have weekly limits and 5 hour rolling limits - with Codex’s being more generous. This aggregates usage across the coding agents as well. Codex has a separate GitHub Code Review quota separate from this, however.

I recorded a short screen cast of a demo I built. It was ~900KB - way too large to publish as a thumbnail. So I asked ChatGPT: What’s the best equivalent of squoosh.app for WEBM compression? I’m looking for a free modern high-quality online video compressor. There are a few, and they compressed it to a third of its size, but 300KB is still too large. So I attached the original and asked: ...

It’s not every day your daughter turns 20. But it is nearly every day that annoying commitments stop you from doing important things - like buying the birthday cake and candles - especially when my wife is traveling. So, late at night, after useless meetings and well after when shops close, I asked Claude (the most creative of the lot): I have bread, Nutella, peanut butter, jam, and the usual household supplies. How can I celebrate my daughter’s 20th birthday with a birthday cake using stuff like these? Any creative ideas? ...

Recently, I’ve re-used my own writing / transcripts as context to LLMs. For example, I’ve used: My meeting transcripts to answer interview questions My blog posts to write news articles My chat history to extract AI-related advice This repurposing can be used for so many things. For example, before delivering a talk to journalists “Review my Feb 2026 LLM posts and generate a single-sentence, ELI15 high-impact use case for journalists.” gets me list of use cases. Now, all I have to do is show what I did and share how it’s relevant for them, like: ...

This week, I learned: tree-sitter is a fast incremental parser generator. That means you can use it to create a parser for any language that works even if there are errors, e.g. malformed JSON, Python, etc. It’s used by most editors. For example, tree-sitter-python is a fast forgiving Python parser. There are official parsers and community parsers Programming Languages: All popular ones, less popular ones like Ada, Fortran, Lua, Zig, … and even niche / domain-specific languages (Gleam, TLA⁺). Markup & Data Formats: HTML, XML, Markdown, JSON, YAML, TOML, CSV, … Query, Scripting & Config: SQL, GraphQL, Bash, Dockerfile, Regex, Terraform (HCL), … Ligature fonts are nice, but it might not be worth forming a habit out of. Claude Cloudflare introduced Markdown for Agents. This converts websites from HTML to Markdown via Accept: text/markdown for any Cloudflare endpoint which has enabled this feature. This requires a Pro account. Microgrants is a list of microgrants programs - where you can give small amounts of money, e.g. $50 - $1K as well as large fellowships over $100K. This includes student grants, creative & community grants, tech grants, social & policy grants, etc. “Animated web formats are simply video codecs … stripped of their most powerful feature.” A .webm file is likely to compress much better than an animated .webp, etc. Gemini esbuild can compile CSS files to support old browsers, e.g. nested rules, custom properties, etc. Usage: esbuild input.css --target=chrome90 --outfile=output.css. Julia Evans New jargon I learnt: Human-On-The-Loop. Treasure In Treasure Out VS Code’s GitHub Copilot extension supports a github.copilot.chat.commitMessageGeneration.instructions setting that lets you add a [{"text": ...}] or [{"file": "path/to/file.ext"}] prompt to the commit message generation. I’ve pointed this to my git-commit.md custom prompt.

Our brains remember some things better. Explaining that way makes it stick. Here are the eight things, most important first, that help you: Structure explanations memorably: Face. You remember faces before facts. So cast characters: “Imagine you’re a courier carrying a packet.” Prefer archetypes to real names — less baggage, more imagination. Place. You’re reading down a list now — and the top feels more important. That’s spatial wiring. Turn any concept into a map. Use higher, deeper, nearer, inside, … Tale. You read #1 and #2 first because they came first. Your brain built a cause from that sequence. Time creates cause for free. “Because” makes anything believable. Scale. “Two feet tall” lands instantly. “60 cm” forces you to convert. Your brain doesn’t measure — it compares. Give it reference objects, not just numbers. Deliver explanations memorably: ...

Priyanka was ghost-writing an interview request from PC Quest for Ankor. Two questions were a bit technical: Straive combines data engineering, analytics, AI, and content services. At a technical level, how are enterprises stitching these capabilities together architecturally and operationally when addressing complex business problems at scale? GenAI systems tend to behave unpredictably when exposed to real workloads. What engineering patterns, monitoring approaches, or runtime safeguards are becoming essential to maintain reliability, performance, and cost control in production settings? … and she asked if I could review. ...

In Feb 2024, Claude 3 Opus was the best model, at $15/MTok. In Jul 2024, GPT 4o Mini reached that quality at 10% of the price. In Dec 2024, DeepSeek v3 reached that quality at 1% of the price. Video See the interactive version If the price continues to fall 10x every 11-12 months or so (and it has been), then in a year, a Claude 4.6 Opus like model will cost 1/10th of the $5/MTok today, and in 2 years, 1/100th of that. ...

I got an email from Google Cloud on my work account “excited to introduce you to Gemini Enterprise”. Once I signed up, it said, “you have 30 days to try Gemini Enterprise – Business edition at no cost.” After that, it costs US $21/user/month, which I can subscribe to here. The main differences from Gemini Pro (consumer accounts) seem to be: Data Privacy. Google won’t read or use your data to train. (In Pro, you need to turn it off explicitly. Here, it’s the default.) Admin Controls. Admins can turn off connectors, manage users, retention policies, etc. Copyright Indemnification. If AI infringes copyright and you get sued, Google will find the case. But if you’re using Gemini via your Google Workspace account (i.e. your work account already has Pro subscription), then it makes no difference - it’s all the same. ...

High Scepticism + High Humility = Scientist. Editor. Indecisive. “Let’s test it.” Good for high-stakes, irreversible decisions. System 2 thinking is slow and effortful. But if you do this too often or too long, you miss the window or other opportunities. High Scepticism + Low Humility = Critic. Troll. Red Hat. “You are wrong.” Good for stress-testing and auditing. To prevent/anticipate failures. But it’s toxic and demoralizing if you do it too much. ...

I have a bad memory. (I need to write about that. I k eep forgetting to.) It’s worsening. Yesterday, I misplaced my debit card for the first time. Or maybe the second…? Which reminds me, I just forgot a call I have now! (Panic.) (15 min later.) So, anyway, therefore, I log stuff meticulously. Like what I did each day, what I ate, what I weigh, what pained me, etc. But the best logging is automated. My phone logs where I am. My bank logs what I spend. My calendar logs who I meet. ...

You can use AI to submit not just talk proposals but entire articles from your past work. Ranjeeta said Built In wants an article and had written one on my behalf. If someone’s going to write for me, I’d rather pick an AI! So here’s what I did: Research the audience So I asked Gemini to research and suggest topics: I received a request to write an article for Built In (https://builtin.com/), an online community and publication for startups and tech companies. ...

Developing taste & judgement are an essential skill in the AI era. # # But taste is different from knowledge and takes more time. Gaining knowledge is a software upgrade. It strengthens existing synapses. It’s fast, reversible, no new “cables” required. Taste is a hardware upgrade. It destroys inefficient pathways, grows neurons for new pathways, and wraps axons with myelin speeding up signals 100x. (London cab drivers literally have a larger hippocampus.) Taste takes time. How we acquire taste depends on the environment. ...

10:20 am. After submitting my VizChitra 2026 talk proposal, did a quick analysis of the submissions. Copy the HTML from the submissions page and paste into Gemini. Ask it: “Given this HTML, share a JS snippet I can copy and paste into DevTools that will return an array of objects containing all the useful information about each submission.” Paste the JS snippet into DevTools and get the structured result. Here’s the breakdown of submissions (excluding exchibitions): ...

This week, I learned: ffmpeg lets you concatenate files without needing a separate input file. ffmpeg -i "concat:input1.ext|input2.ext|input3.ext" -c copy output.ext works as long as the files use the same codecs and parameters. There is a psychological phenomenon where we “overlay” old images of people we haven’t seen in decades onto their current selves, making it hard to distinguish between someone who is 30 and someone who is 70. Gemini Most modern ls tools like eza --icons or lsd support icons if the terminal font supports icons, like Nerd Fonts. For example, this:  shows up as a GitHub icon and 󰌻 as a LinkedIn icon. The Nerd Fonts Cheat Sheet is a good place to search for these. You may need to download a supporting font. I just replaced Fira Code with Maple Mono as my default font on VS Code. Like Fira Code, the ligatures are great, but there are extra ligatures like [TODO] or [ERROR], connected italics, nerd font support, variable font weights, and more. Via lobste.rs. (Update: Maple Mono is much harder to read than Fira Code, so I switched back. But it’s a nice idea.)

My last two presentations used browser tabs as slides. For my talk last week titled Your Chotu Is Smarter Than You Think, I planned to show a series of examples. I loaded them all in a browser window as tabs like this: How I use AI to navigate toilets How I use AI for food recommendation How I use AI for book suggestions What else I can use AI for … Once loaded, I can press Ctrl+PgDn to move to the next - just like I’d press the right arrow key in a slide deck. I can also use the mouse to click on the tab if I want to jump around. ...