Enable "Think" to use our reasoning model. It's best for math, science and coding. You can also ask Grok to “Think harder” about any question that might need a little more brain power
PROMPT ENGINEERING
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New Short Course: Evaluating AI Agents Performance
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New short course: Evaluating AI Agents! Evals are important for driving AI system improvements, and in this course you'll learn to systematically assess and improve an AI agent’s performance. This is built in partnership with @arizeai and taught by @JohnGilhuly, Head of Developer… pic.twitter.com/ZD767H3OCR
— Andrew Ng (@AndrewYNg) 19 février 2025New short course: Evaluating AI Agents! Evals are important for driving AI system improvements, and in this course you'll learn to systematically assess and improve an AI agent’s performance. This is built in partnership with @arizeai and taught by @JohnGilhuly
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Hesitation in Starting AI Building Projects
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anyone feel like they hesitated before starting to build with AI (or maybe you still are hesitating)? Why?
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Building with Code: AI Writes, I Direct
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My point is that I’m building with code, I’m just not writing it. Ai is. No coders who code are coders
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Character AI adds Chat Styles feature
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Character AI got "Chat Styles", a new feature that allows users to select between fast, balanced and in-depth responses from characters.
— 🚨 AI News | TestingCatalog (@testingcatalog) 18 février 2025
NYAN mode is "Smart and more thoughtful". Feels like a model selector, tbh 👀 https://t.co/a93UQkbaKo pic.twitter.com/r5Nn1eLJqZCharacter AI got "Chat Styles", a new feature that allows users to select between fast, balanced and in-depth responses from characters. NYAN mode is "Smart and more thoughtful". Feels like a model selector, tbh
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Testing prompts with Grok 3
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Give me a prompt you’d like to test with Grok 3 and I’ll share the result
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xAI develops ‘Personas’ with unique features
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BREAKING 🚨: xAI is working on "Personas", including "unhinged" and "romance" 👀
— 🚨 AI News | TestingCatalog (@testingcatalog) 18 février 2025
Chats with Personas will have a bit different colour coding. Unlike "personalities" (aka custom prompts), "personas" will likely have pre-defined system prompts and different sets of functionalities… pic.twitter.com/e6nAJvdFqIBREAKING : xAI is working on "Personas", including "unhinged" and "romance" Chats with Personas will have a bit different colour coding. Unlike "personalities" (aka custom prompts), "personas" will likely have pre-defined system prompts and different sets of functionalities
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Free GenAI Course: Build AI Agent Systems and Prompt Engineering Skills
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Practitioners looking to expand their skills can build #GenAI expertise with our free, self-paced course — designed to: – Set up a dev environment, and prompt engineering components
– Learn how to build AI agent systems
– Fine-tune models
– Determine best practices for -
GPT-5: An AI Dropdown Menu to Select the Right Model
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Plot-twist: GPT-5 is an AI-powered dropdown menu that picks the right model for the task
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Best AI Tools for Vibe Coding: Replit, Bolt, Cursor Comparison
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Tool rank for vibe coding: The best is @Replit – use the agent to kick off the project, then switch to assistant for more complex things If you want something fairly basic, fast – use bolt/create/lovable if you want complete control and flexibility; cursor (or replit) all