--- title: "arjun kamath (@arjunvk) | Hashnode" description: "arjun kamath (@arjunvk) writes on Hashnode. Read their latest articles and follow their work." url: "https://hashnode.com/@arjunvk" --- @arjunvk # arjun kamath @arjunvk · Joined February 2025 ### [Evaluating a Base LLM: From One Test Case to Standard Benchmarks](https://extrabyte.hashnode.dev/evaluating-a-base-llm-from-one-test-case-to-standard-benchmarks?utm_source=hashnode&utm_medium=feed) A practical introduction for QA engineers using EleutherAI’s LM Evaluation Harness. If you have worked in test automation, you already understand much of the structure behind LLM evaluation: provide a 7 min read · [extrabyte.hashnode.dev](https://extrabyte.hashnode.dev/evaluating-a-base-llm-from-one-test-case-to-standard-benchmarks?utm_source=hashnode&utm_medium=feed) [Oct 22](https://hashnode.com/posts/evaluating-a-base-llm-from-one-test-case-to-standard-benchmarks/6ad9bf901879bb7db009b2a1) ### [🛡️ Prompt Injection & How to Harden Amazon Bedrock Against It](https://extrabyte.hashnode.dev/prompt-injection-and-how-to-harden-amazon-bedrock-against-it?utm_source=hashnode&utm_medium=feed) Learn how prompt sanitization and Bedrock Guardrails block AI prompt injection attacks with a hardened, multi-layer defense pipeline. 4 min read · [extrabyte.hashnode.dev](https://extrabyte.hashnode.dev/prompt-injection-and-how-to-harden-amazon-bedrock-against-it?utm_source=hashnode&utm_medium=feed) [Aug 13, 2025](https://hashnode.com/posts/prompt-injection-and-how-to-harden-amazon-bedrock-against-it/689c000277c2d2d3e474f174) ### [AI Is More Predictive Than Intuitive, Which Means You May Still Not Be 100% Replaceable. Yet.](https://extrabyte.hashnode.dev/ai-is-more-predictive-than-intuitive-which-means-you-may-still-not-be-100-replaceable-yet?utm_source=hashnode&utm_medium=feed) Discover why even the smartest AI coding models still rely on human intuition and why developers aren't 100% replaceable. Not yet. 3 min read · [extrabyte.hashnode.dev](https://extrabyte.hashnode.dev/ai-is-more-predictive-than-intuitive-which-means-you-may-still-not-be-100-replaceable-yet?utm_source=hashnode&utm_medium=feed) [Aug 5, 2025](https://hashnode.com/posts/ai-is-more-predictive-than-intuitive-which-means-you-may-still-not-be-100-replaceable-yet/6891568077ffbe4438d27f10) ### [Bias Testing in AI: A Practical Guide with Python and Fairlearn](https://extrabyte.hashnode.dev/bias-testing-in-ai-a-practical-guide-with-python-and-fairlearn?utm_source=hashnode&utm_medium=feed) A step-by-step guide to identifying and fixing AI bias using open-source Python tools. Includes code samples for bias detection, visualization, and mitigati 4 min read · [extrabyte.hashnode.dev](https://extrabyte.hashnode.dev/bias-testing-in-ai-a-practical-guide-with-python-and-fairlearn?utm_source=hashnode&utm_medium=feed) [Apr 29, 2025](https://hashnode.com/posts/bias-testing-in-ai-a-practical-guide-with-python-and-fairlearn/68106f3ffa8da861ffa39d35) ### [Playwright vs. Selenium: The Best Tool for Modern Web Automation](https://extrabyte.hashnode.dev/playwright-vs-selenium-the-best-tool-for-modern-web-automation?utm_source=hashnode&utm_medium=feed) In the ever-evolving world of web automation, Selenium and Playwright have emerged as two of the most popular frameworks. While Selenium has been the industry standard for years, Playwright is gaining significant traction, offering modern capabilitie... 4 min read · [extrabyte.hashnode.dev](https://extrabyte.hashnode.dev/playwright-vs-selenium-the-best-tool-for-modern-web-automation?utm_source=hashnode&utm_medium=feed) [Mar 5, 2025](https://hashnode.com/posts/playwright-vs-selenium-the-best-tool-for-modern-web-automation/67c7fc5de1cec8008a400b17)