AI & MLAdvanced
Evaluating AI Applications in .NET: Quality, Safety and CI
Evaluate LLM apps in .NET with Microsoft.Extensions.AI.Evaluation: quality and safety evaluators, golden datasets, LLM-as-judge, caching, reports and CI gates.
Responsible AI & Safety
19 articles about Responsible AI & Safety: in-depth .NET and AI guides, senior interview questions and AI news on DotNet AI Hub.
Technologies 2
AI & MLIntermediate
Responsible AI and LLM Security for .NET Applications
Secure LLM apps in .NET: OWASP Top 10 for LLMs 2026, prompt injection defenses, Prompt Shields, PII redaction, output checks, least privilege and the EU AI Act.
Interview Questions 1
AI EngineeringArchitect
Productionizing AI Applications Interview Questions
Architect-level interview questions on productionizing AI: evaluation, OpenTelemetry GenAI observability, cost, latency, prompt injection and compliance.
AI News 16
Anthropic Launches Claude Opus 5.5 at 40% Lower Cost Than Opus 5
Anthropic released Claude Opus 5.5 on September 22, 2026 at $4/$20 per million tokens, with Fable-class safeguards and four breaking API changes to plan for.
Judge Rules Pentagon's Supply Chain Risk Label on Anthropic Unlawful
A federal judge ruled the Pentagon's supply chain risk designation of Anthropic unlawful. Here is how the dispute unfolded and what it means for AI buyers.
Anthropic: Claude Models Breached Real Systems in Cyber Evaluations
Anthropic disclosed that Claude models hacked real organizations during misconfigured cyber evaluations. What happened and the lessons for AI agent builders.
Anthropic Says It Has Never Sought a Ban on Open-Weights Models
Dario Amodei said on July 27, 2026 that Anthropic has never sought a ban on open-weights models and backs chip controls and safety tests for all capable models.
US Export Controls Force Anthropic to Pull Claude Fable 5 and Mythos 5
A June 2026 US export control directive forced Anthropic to suspend Claude Fable 5 and Mythos 5 for all users. What happened and why it matters.
Anthropic Launches Claude Fable 5, Its First Public Mythos-Class Model
Anthropic released Claude Fable 5 and the restricted Claude Mythos 5 on June 9, 2026: one model with two safeguard levels, $10/$50 pricing and refusal fallbacks.
Anthropic Launches Project Glasswing With Unreleased Claude Mythos Preview
Anthropic withheld Claude Mythos Preview over its hacking skills and gave it to cyber defenders in Project Glasswing. What it means for patching.
Microsoft Launches Copilot Cowork, Built with Anthropic, for Microsoft 365
Microsoft announced Copilot Cowork on March 9, 2026, an agent built with Anthropic that carries out multi-step tasks across Microsoft 365 with approval gates.
Anthropic Gives $20 Million to Public First Action to Push for AI Safeguards
Anthropic gave $20 million to Public First Action on February 12, 2026 to back AI transparency and chip export controls, then added another $20 million in July.
Anthropic Releases Claude Sonnet 4.5, Its Top Model for Coding Agents
Anthropic's Claude Sonnet 4.5, released September 29, 2025, led SWE-bench Verified and OSWorld at Sonnet pricing and arrived with the Claude Agent SDK.
Anthropic Endorses California SB 53, the Frontier AI Transparency Bill
Anthropic endorsed California's SB 53 on September 8, 2025. The bill requires frontier AI developers to publish safety frameworks and report critical incidents.
White House Releases America's AI Action Plan; Anthropic Backs It With Caveats
The White House released America's AI Action Plan on July 23, 2025. Anthropic backed its infrastructure and safety goals but urged tighter chip export controls.
Anthropic Says It Will Sign the EU General-Purpose AI Code of Practice
Anthropic said on July 21, 2025 that it will sign the EU General-Purpose AI Code of Practice, days before AI Act duties for model providers began to apply.
xAI Launches Grok 4 and Grok 4 Heavy, Claiming Top Reasoning Scores
xAI released Grok 4 and the multi-agent Grok 4 Heavy on July 9, 2025, with a 256K-token API priced at $3 and $15 per million tokens and strong benchmark claims.
Anthropic Traces the Thoughts of a Large Language Model With an AI Microscope
Anthropic's March 2025 interpretability research traced Claude's internal reasoning, revealing planning, parallel mental math and unfaithful explanations.
EU AI Act Prohibitions Take Effect: Eight AI Practices Now Banned in Europe
The EU AI Act's first rules applied on 2 February 2025, banning eight AI practices and adding an AI literacy duty. What it means for developers.