Thursday, August 7, 2025

Run OpenAI’s GPT-OSS-120B & GPT-OSS-20B Models Locally: Free, Open-Weight AI for Advanced Reasoning

OpenAI's New Free AI Reasoning Models: GPT-OSS-120B & GPT-OSS-20B Explained


Run ChatGPT-Like AI Models Locally even on a Laptop with OpenAI’s Free GPT-OSS Releases

Introduction: OpenAI Goes Open Again

In a surprise move, OpenAI has returned to open-source model development for the first time since GPT-2 in 2019. They’ve launched two free, open-weight reasoning models:

gpt-oss-120b - A large, high-performance model

gpt-oss-20b - A smaller, lightweight model for personal devices

These models are a major step toward democratizing powerful AI, allowing anyone from developers to students to run cutting-edge reasoning models locally without relying on OpenAI’s API or the cloud.

What Are GPT-OSS Models?

The GPT-OSS models are transformer-based AI models designed for reasoning tasks like answering complex questions, making decisions, and generating smart, coherent text.

Key Points:

  • Model Size Hardware Required License Hosted On.
  • GPT-OSS-120B 120 billion parameters Single high-end NVIDIA GPU (e.g., A100) Apache 2.0 Hugging Face.
  • GPT-OSS-20B 20 billion parameters Consumer-grade PC with 16GB RAM Apache 2.0 Hugging Face.

These models bring high-quality reasoning and language generation to everyone—no subscription, no API key, no limits.

Top Features of GPT-OSS Models

  • Open Weights
  • Freely downloadable and usable without license fees perfect for research, development, or personal AI projects.
  • Advanced Reasoning.
  • Capable of performing logical tasks, understanding questions, summarizing information, and offering clear answers.

Local Deployment

Run them directly on your own laptop, PC, or local server without sending your data to the cloud.

  1. Privacy First.
  2. No data sharing with third-party APIs. Everything stays on your machine.

Apache 2.0 License

Use them commercially, modify them, or integrate into your own products completely legal and free.

Where to Download GPT-OSS-120B and GPT-OSS-20B

Both models are available on Hugging Face, a trusted platform for hosting AI models.

Download from Hugging Face

Search for:

  1. openai/gpt-oss-120b
  2. openai/gpt-oss-20b

You’ll find:

Model files

Configuration

Example code

Licensing information

What Can You Do With These Models?

For Developers

Build your own AI chatbot or assistant

Add advanced reasoning to apps, games, or websites

Fine-tune for industry-specific use (healthcare, law, etc.)

For Educators & Students

Generate summaries and explanations

Ask complex questions and receive well-structured answers

Use offline during exams or research

For Businesses

Use AI internally for document analysis, customer support, or automation

Avoid vendor lock-in with fully local AI infrastructure

How to Run GPT-OSS Locally (Even on a Laptop!)

OpenAI designed the models to be accessible without massive computing resources.

Hardware Requirements

Model Minimum Requirements

gpt-oss-20b Consumer PC / Laptop with 16GB RAM + 1 GPU (or CPU with patience)

gpt-oss-120b NVIDIA A100 GPU (or equivalent), 80GB VRAM

If you’re using a standard laptop, go with GPT-OSS-20B.

Recommended Tools to Run the Models

1. Text Generation Web UI

Beginner-friendly GUI

Open-source, supports multiple models

git clone https://github.com/oobabooga/text-generation-webui

cd text-generation-webui

python server.py

Then load the downloaded gpt-oss-20b model into the interface.

2. Ollama (Simplest Way)

Install Ollama, then import the model:

ollama create gpt-oss-20b -f ./model.gguf

ollama run gpt-oss-20b

3. Hugging Face Transformers (For Developers)

Install transformers:

pip install transformers accelerate

Then load the model in Python:

from transformers import AutoModelForCausalLM, AutoTokenizer

model = AutoModelForCausalLM.from_pretrained("openai/gpt-oss-20b")

tokenizer = AutoTokenizer.from_pretrained("openai/gpt-oss-20b")

Real Use Cases of GPT-OSS Models

Use Case GPT-OSS Capability.

Chatbots Reason through complex user queries

Customer Support Auto-answer FAQs with logic

Education Explain concepts and solve problems

Research Summarize, analyze, and explore data

Software Dev Help write and explain code

Privacy-Critical Tasks Fully local reasoning for healthcare, law, finance.

Why Apache 2.0 License Matters

This license gives you maximum freedom:

✅ Use for commercial products

✅ Modify and redistribute

✅ No royalties or fees

✅ No requirement to share changes

This makes the GPT-OSS models a solid base for startups, researchers, and indie developers.

The Strategic Shift Behind OpenAI’s Release

For years, OpenAI focused on proprietary models like GPT-4, available only via API. This move to open up GPT-OSS is a clear signal that:

OpenAI wants to lead in open development again

There’s a growing demand for on-device, privacy-respecting AI

They are responding to pressure from open-source communities and governments

OpenAI Empowers Everyone Again


With the release of gpt-oss-120b and gpt-oss-20b, OpenAI has put powerful AI reasoning in your hands.

You no longer need:

A subscription to ChatGPT

Cloud servers.

Internet connection.

You can now:

  • Build apps
  • Learn and explore
  • Run private AI tools
  • Use AI freely and legally
  • All on your own terms.

Resources & Downloads

GPT-OSS-120B on Hugging Face

GPT-OSS-20B on Hugging Face

Text Generation Web UI

Ollama Official Site

Transformers Library (Hugging Face)

Sunday, July 27, 2025

Cryptocurrency Mining

What Is Cryptocurrency Miningand How It Works


Learn how crypto is created, verified, and secured without the confusing jargon.

Cryptocurrency mining validates blockchain transactions and creates new coins.

Miners use computing power to solve puzzles and earn rewards.

Mining is critical for the security and decentralization of cryptocurrencies like Bitcoin.

Profitability depends on electricity cost, hardware, crypto prices, and mining difficulty.

What Is Cryptocurrency Mining?

Cryptocurrency mining is the process of confirming and securing crypto transactions on a blockchain network. It’s also how new coins are created.

Think of it like a digital accountant using powerful computers to:

  • Organize pending transactions into blocks
  • Solve a puzzle to confirm them
  • Add them to the blockchain
  • Earn a reward for their work

This system makes sure no one can cheat or spend the same crypto twice.

How Does Crypto Mining Work?

The Simple Version:

1. Transactions are grouped into blocks.

2. Miners solve puzzles using computers (guessing numbers called nonces).

3. The first miner to solve it gets to confirm the block.

4. They get a reward — new coins + transaction fees.

The Full Process:

Step 1: Hashing Transactions

Miners turn each transaction into a special code called a hash using a formula. They also add a custom transaction to reward themselves.

Step 2: Creating a Merkle Tree


All transaction hashes are grouped into a tree structure. The final top hash is called the Merkle Root, summarizing the block's contents.

Step 3: Solving the Puzzle

Miners mix the Merkle Root, the previous block’s hash, and a random number (nonce) and hash them. The goal? Find a result that meets the difficulty target.

Step 4: Broadcasting the Block

Once a valid hash is found, the new block is shared with the network. If accepted, it’s added to the blockchain, and the miner earns the block reward.

What Happens if Two Blocks Are Mined at Once?

Sometimes, two miners solve a puzzle at the same time. This leads to a temporary split in the network. Eventually, one block is chosen as the winner, and the other becomes an orphan block.

What Is Mining Difficulty?

Mining difficulty adjusts automatically based on the network's total computing power.

More miners = higher difficulty

Fewer miners = lower difficulty

This ensures new blocks are created at a steady rate, usually every 10 minutes for Bitcoin.

Types of Cryptocurrency Mining

CPU Mining:

Uses a computer’s main processor

Was common in Bitcoin’s early days

No longer profitable

GPU Mining:

Uses graphic cards (GPUs)

Better for mining altcoins

More flexible but less efficient than ASICs

ASIC Mining:

Specialized hardware for mining

Most powerful and profitable

Expensive and hard to upgrade frequently

Mining Pools:

Groups of miners combine power

Rewards are shared among members

More stable income but can lead to centralization

Cloud Mining:

Rent mining power from a company

No need to own equipment

Risk of scams or lower profits


Bitcoin Mining: A Quick Overview

Bitcoin mining is based on the Proof of Work (PoW) model. Miners compete to solve puzzles and earn BTC. In 2024, each block reward is 3.125 BTC.

Bitcoin has a built-in halving system, where rewards are cut in half every ~4 years to control inflation.

Is Crypto Mining Profitable?

It can be, but it depends on:

  • Cost of hardware and electricity
  • Price of the cryptocurrency
  • Mining difficulty
  • Upgrades to equipment

Changes in blockchain protocols (e.g., Ethereum moved to Proof of Stake)

Some miners succeed, but many fail to profit due to high costs and fast-changing technology.

Before You Start Mining

Research the best coins to mine.

Compare hardware efficiency.

Understand your electricity costs.

Join a trusted mining pool (if solo mining isn’t profitable).

Cryptocurrency mining is a crucial part of blockchain technology. It keeps networks like Bitcoin running smoothly and securely while giving miners the chance to earn digital rewards.

But mining isn’t a get-rich-quick scheme  it requires planning, investment, and ongoing adjustments.

If you're thinking about mining, do your own research (DYOR) and stay updated on market changes and protocol upgrades. Crypto rewards can be worth it if you're smart about it.

Monday, July 21, 2025

Bitcoin Explained Simply: What It Is and How It Works

Discover how Bitcoin is changing money forever.

Bitcoin 

Key Takeaways

Bitcoin is the first-ever cryptocurrency, launched in 2009 by a person (or group) known as Satoshi Nakamoto.

  • Bitcoin is decentralized, meaning it isn’t controlled by any government or bank.

  • It's used for payments, investments, and global money transfers.

🪙 What Is Bitcoin?

Bitcoin is a digital currency also known as a cryptocurrency. It lets people send and receive money online without needing banks or middlemen.

Bitcoin was introduced in 2008 and launched in 2009. Its symbol is BTC.

Unlike traditional money (like USD or PKR), Bitcoin isn’t controlled by any central authority. Anyone with internet access can use it anytime, anywhere.

How Does Bitcoin Work?

Bitcoin works through a system called blockchain. Think of it as a digital ledger like a record book that shows every Bitcoin transaction ever made.

The Blockchain:

  • Each block contains recent transactions.
  • All blocks are connected like a chain.
  • Once added, a block can’t be changed or removed.

The Network:

The blockchain is run by thousands of computers (called nodes) around the world.

Everyone in the network has the same copy of the ledger.

This makes it nearly impossible to cheat the system.

Example: Sending Bitcoin

Let’s say Alice sends 1 BTC to Bob.

The system subtracts 1 BTC from Alice.

It adds 1 BTC to Bob.

This transaction is recorded on the blockchain, and everyone in the network sees it.

What Is Bitcoin Mining?

Mining is the process that keeps Bitcoin secure.

Here’s how it works:

Miners use powerful computers to solve difficult math puzzles.

The first one to solve it adds a block to the blockchain.

They get rewarded with new bitcoins.

This process is called Proof of Work (PoW) it makes sure no one can spend the same bitcoin twice.

What Is Bitcoin Used For?

Online payments (some businesses accept BTC)

Sending money worldwide (cheaper than banks)

Investment (many people buy and hold BTC for long-term value)

More companies are accepting Bitcoin, and it’s becoming a real alternative to traditional money.

Who Created Bitcoin?

Bitcoin was created by Satoshi Nakamoto, a mysterious person or group.

In 2008, Satoshi published a paper: "Bitcoin: A Peer-to-Peer Electronic Cash System"

In 2009, the first Bitcoin software was launched.

The first transaction was between Satoshi and a developer named Hal Finney.

The Famous Bitcoin Pizza Day

In May 2010, someone paid 10,000 BTC for two pizzas. Today, that would be worth millions of dollars!

This event is now celebrated as Bitcoin Pizza Day every year.

Did Satoshi Invent Blockchain?

Not exactly. Blockchain technology existed before Bitcoin. But Satoshi was the first to combine it with digital currency in a way that solved the double-spending problem.

How Many Bitcoins Exist?

Only 21 million bitcoins will ever exist.

As of 2024, over 94% of them have been mined. But it will take more than 100 years to mine the rest.

What Is Bitcoin Halving?

Bitcoin halving happens about every 4 years. It cuts the reward miners get in half.

This keeps Bitcoin’s supply limited and predictable, unlike fiat currencies that can be printed endlessly.

The most recent halving happened in April 2024. The next one is expected in 2028.

Is Bitcoin Safe?

Bitcoin is secure, but you must take care of your wallet.

Risks include:

  • Hacking & phishing attacks
  • Malware and fake apps
  • Losing access to your wallet

Stay safe by:

  • Using trusted wallets
  • Enabling two-factor authentication
  • Never sharing your private keys

Also, Bitcoin’s price can rise or fall quickly, so investing comes with risk.

Bitcoin is more than just digital money  it’s a global financial revolution.

Whether you’re curious, investing, or planning to use it for payments, understanding Bitcoin helps you stay ahead in the digital age.

From freedom from banks to borderless payments, Bitcoin is shaping the future of money and it’s only just beginning.


Sunday, April 27, 2025

Llama 4 by Meta

 

Llama 4 by Meta

Redefining Multimodal AI Through Architectural Innovation

Llama 4

Native multimodality, MoE scalability, and 10M-token context windows set new industry standards

Core Architectural Innovations

Early Fusion Multimodal Backbone
Llama 4 employs text-vision early fusion where raw image pixels (processed through MetaCLIP-based encoders) and text tokens are jointly embedded into a unified latent space before entering the transformer layers.

This enables:

  • Joint pre-training on heterogeneous datasets (text, images, videos)
  • Cross-modal attention without separate modality-specific branches
  • Native interleaved processing of mixed input types (e.g., text+diagrams)

Mixture-of-Experts (MoE) Scaling

The MoE architecture uses dynamic parameter activation:








This design achieves 4-23x parameter efficiency vs dense models through conditional computation.

Training Infrastructure & Techniques

MetaP Hyperparameter Optimization
A novel automated hyperparameter transfer system that:

  • Learns scaling laws across batch sizes (256K-4M tokens/batch)
  • Optimizes layer-wise learning rates (1e-5 to 3e-4 range)
  • Preserves stability across model widths (7B-288B) and depths (32-128 layers)

Precision Engineering

  • FP8 training at 390 TFLOPs/GPU utilization (32K GPU cluster)
  • Gradient quantization with 8-bit Adam optimizer
  • Loss scaling dynamic adjustment for numerical stability

Data Pipeline

30T token dataset (2× Llama 3) with:

  • 45% multilingual text (200 languages, 100+ with >1B tokens)
  • 30% code (Python, C++, CUDA)
  • 25% multimodal (LAION-3B, Youtube-100M clips)

Curriculum learning progressively introduces:

  • Longer sequences (256K→10M tokens)
  • Harder negative samples for contrastive learning

Hardware Requirements & Optimization

Deployment Scenarios

*Reported on Apple M3 Ultra with 4-bit quantization












Quantization Strategies

Int4 (Scout):

  • Group-wise 4-bit weights (128-group size)
  • Dynamic activation quantization (per-token 8-bit)
  • KV cache compression (2.4× reduction)

FP8 (Maverick):

  • Per-expert 8-bit quantization
  • Expert-specific scaling factors
  • Zero-degradation calibration

Performance Characteristics

Benchmark Dominance








Scaling Laws

  • 256K pre-train context enables length extrapolation to 10M tokens

Hybrid attention pattern:

  • Local window (4K tokens) + global sparse (256K stride)
  • Dynamic position interpolation (RoPE θ=1e6)

Retrieval Accuracy

Needle-in-Haystack

  • 98.7% at 1M tokens
  • 89.2% at 10M tokens

Deployment Ecosystem

Optimized Serving Stack

  • Dynamic expert routing with 2μs latency per decision
  • Heterogeneous batching for mixed MoE configurations
  • Speculative decoding (5× draft models) for 2.1× speedup

Enterprise Integration

  1. AWS SageMaker: Pre-configured Scout/Maverick endpoints
  2. Databricks: Optimized for Unity Catalog governance
  3. Hugging Face:
  • TGI 4.0+ with MoE support
  • Custom LoRA adapters for expert fine-tuning

Limitations & Future Work

  • Vision limitations: Text-only output (no image generation)
  • Hardware dependency: Requires H100-class GPUs for full capabilities
  • Bias challenges: Multilingual alignment remains imperfect

Roadmap:

  • 24B dense variant (Q2 2025)
  • Video temporal modeling (Q3 2025)

Technical Differentiation

Llama 4's natively multimodal MoE architecture combined with 10M-token context and FP8 training efficiency establishes a new paradigm for enterprise AI systems. The models' ability to dynamically allocate compute through expert routing while maintaining single-GPU deployability makes them uniquely positioned for both research and production use cases.

How Do Hackers Steal Passwords? 5 Common Methods & Your Security Checklist

 

Stop the Sneak Thieves!

Understanding How Hackers Try to Steal Your Passwords

Cybersecurity

Learn how the bad guys try to snatch them and how to keep them safe!

Have you ever stopped to think about how someone might actually steal your password? It sounds like something out of a spy movie, but unfortunately, it's a very real and common threat. In fact, according to reports from IBM, stolen passwords are the number one way attackers get into systems. The good news is, by understanding their methods, you can significantly boost your own defence.

This blog post, drawing on insights from a video by IBM Technology, will break down five common ways hackers try to get your passwords.

Don’t worry, we’re not giving away any secret hacker knowledge the bad guys already know this stuff! Our goal is to empower you, the "good guys," with the knowledge you need to stay safe.

The Sneaky Five

How Hackers Try to Crack Your Code

Let's dive into the five key methods discussed in the video:

Guessing Games: Sometimes It’s Just a Shot in the Dark

Imagine a burglar simply trying every key they have in the lock. That's essentially what password guessing is. The attacker tries to log in using common passwords or information they might know about you. This could be anything from your pet's name to obvious sequences like "123456".

1. Where do they get their guesses?

  • Imagination or basic knowledge: They might just take a wild stab based on common sense or what they know about you.
  • Sticky notes and visible clues: Believe it or not, hackers sometimes rely on people writing down their passwords on sticky notes near their computers the video refers to these collections as the "PC sunflower".
  • Password databases from past breaches: When websites or services get hacked, their password lists sometimes end up online. Attackers can use these massive lists of real passwords to try on other systems.

Luckily, most systems have a built-in defence against simple guessing “the three-strikes-and-you’re-out rule”. After a few failed login attempts, your account usually gets locked, preventing endless guessing. This is why simply guessing isn’t usually a very effective method for attackers unless they get very lucky or have some good clues.

2. Password Harvesting: When They Already Know (or Think They Do)

This method is more sophisticated than just guessing because the attacker aims to obtain your actual password without having to guess. There are a couple of common ways this happens.

  • Malware - The Silent Spy: Imagine a tiny program secretly recording everything you type on your computer, including your passwords. This type of malicious software is called a “keylogger” or an information stealer. The hacker then collects this information, giving them your passwords directly. This is why keeping your devices free from malware is crucial.
  • Phishing - The Fake Website Trap: Have you ever received an email that looked like it was from your bank or a social media site, asking you to log in? This could be a phishing attack. The email directs you to a fake website that looks very similar to the real one. When you enter your username and password on this fake site, you’re actually handing your credentials directly to the attacker.

In both these harvesting scenarios, the attacker doesn't need to guess – they've effectively tricked you or your computer into giving them the keys to your accounts.

3. Password Cracking: Decoding the Digital Vault

Most websites and apps don’t store your password in plain text. Instead, they use a process called hashing, which turns your password into a scrambled code. This means that even if a hacker breaks into a system and steals the password database, they won’t see your actual password. However, resourceful attackers have ways to try and figure out the original password through a process called cracking.

  • How does cracking work? Since hashing is a one-way process (it can’t be easily reversed), attackers try to “back their way” into discovering your password. They do this by:
    I . Using lists of common passwords: They take publicly available lists of frequently used passwords or password dictionaries.
    II. Applying the same hashing process: They take a password from their list, hash it using the same method as the hacked system, and then compare the resulting code to the stolen hashed passwords.
    III. Checking for a match: If the codes match, they know the original password, even though they never "broke" the encryption.
    IV. Brute force (the last resort): In a more time-consuming approach, they might try every possible combination of characters until they find a match.

So, while they can't directly reverse the hashing, they can try enough guesses and comparisons to potentially uncover the original passwords.

4. Password Spraying: One Key, Many Doors

Imagine a master key that an attacker tries on multiple doors within the same building. That’s the idea behind password spraying. Instead of trying many different passwords on one account (which would likely trigger the three-strikes rule), the attacker takes a Single, Common Password and tries it on many different user accounts within the same system.

  • Why does this work? People often reuse the same passwords across multiple accounts. So, a password that was exposed in a previous data breach elsewhere might still work for someone on a different system.
  • The advantage for the attacker: By only trying one password per account, they can avoid triggering account lockouts and stay under the radar. They don’t need to get into every account; they just need to find one that uses that common password.

5. Credential Stuffing: Spreading the Net Wider

Credential stuffing is very similar to password spraying, but instead of focusing on multiple accounts within a single system, the attacker takes a known username and password combination (often obtained from previous data breaches) and tries it across many different websites and services.

  • The logic: Just like people reuse passwords, they often reuse usernames (like their email address) as well. If a hacker has a list of usernames and passwords from one hacked site, there’s a good chance some of those combinations will work on other sites too.
  • Harder to detect: This type of attack can be even harder to spot because the login attempts are spread across different systems, and the security teams for each individual system might not see the bigger picture.

Fortifying Your Digital Castle: How to Stay Safe

Now for the most important part: what can you do to protect yourself from these attacks?

Let’s focus on what you can do for prevention.

  • Build Strong Walls (Password Strength): When creating passwords, aim for a good level of complexity and, more importantly, “length”. Longer passwords are generally much harder to crack than shorter, complex ones.
  • Avoid the Known Weaknesses: When choosing a password, make sure it doesn’t appear on lists of known vulnerable passwords (many systems will check this for you).
  • Different Keys for Different Doors (Unique Passwords): Try your best to use a unique password for every website and service you use. This means that if one account is compromised, the attackers won’t automatically have access to all your other accounts.
  • Your Digital Bodyguard (Password Managers): Password managers are tools that can generate strong, unique passwords for you and securely store them, so you don’t have to remember them all. They can significantly reduce your risk of reusing passwords.
  • Double the Locks (Multi-Factor Authentication - MFA): Don’t rely on just a password. Enable multi-factor authentication whenever possible. This adds an extra layer of security, often requiring a code from your phone or a biometric scan (like your fingerprint or face ID) in addition to your password. This means even if an attacker steals your password, they likely won’t be able to log in without that second factor.
  • Consider the Ultimate Key (Passkeys): Use “passkeys” as a more secure alternative to passwords. These are based on cryptography and offer a stronger form of authentication. If you have the option, consider using passkeys.
  • Guard the Gate (Be Wary of Phishing): Always be suspicious of emails or messages asking you to log in to your accounts, especially if they seem urgent or unexpected. Double-check the website address to make sure it’s legitimate before entering your credentials.
  • Keep Your System Clean (Avoid Malware): Install and regularly update antivirus and anti-malware software on your devices to protect against keyloggers and other malicious programs.

Stay Vigilant, Stay Secure

Understanding how hackers try to steal your passwords is the first step towards protecting yourself in the digital world. By implementing strong password practices, using password managers and multi-factor authentication, and staying vigilant against phishing and malware, you can significantly reduce your risk of becoming a victim. Remember, making life harder for the bad guys is the goal! Stay safe out there!

How to Get £7,000/Year with the Newcastle University Vice-Chancellor’s Scholarship 2027

Newcastle University Vice-Chancellor’s International Scholarship 2027: Complete Overview, Eligibility & Application Guide Newcast...