AI & MLBeginner
AI-Assisted .NET Development with GitHub Copilot and Coding Agents
How .NET teams use GitHub Copilot, coding agents, custom instructions and MCP servers, plus review, security and modernization guidance for 2026.
AI Coding Assistants
36 articles about AI Coding Assistants: in-depth .NET and AI guides, senior interview questions and AI news on DotNet AI Hub.
Technologies 2
ArchitectureAdvanced
Modernizing .NET Framework Applications to Modern .NET
A practical roadmap for modernizing .NET Framework apps: assessment, AI-assisted tooling, System.Web adapters with YARP, CoreWCF and EF6 migration.
AI News 34
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.
Alibaba Releases Qwen3.8, Its First Qwen-Max-Class Open-Weight Model
Alibaba's Qwen team released Qwen3.8 in August 2026, its first Qwen-Max-class open-weight model: a 2.4T MoE with 95B active parameters, followed by a 27B model.
Moonshot AI Releases Kimi K3 Weights, a 2.8-Trillion-Parameter Open Model
Moonshot AI released Kimi K3's weights in July 2026, a 2.8T-parameter multimodal MoE model with a 1M-token context and new terms for large commercial users.
Anthropic Launches Claude Sonnet 5, Its Most Agentic Sonnet Model
Anthropic released Claude Sonnet 5 on June 30, 2026, an agentic model close to Opus 4.8 at $2/$10 per million tokens and the new default on Free and Pro plans.
GitHub Copilot App Goes GA as a Desktop Hub for Parallel AI Agents
GitHub's Copilot desktop app reached general availability on June 17, 2026, giving developers one place to run parallel AI agent sessions in isolated worktrees.
SpaceX to Acquire Cursor for $60 Billion in a Record All-Stock Deal
SpaceX agreed to buy AI coding startup Cursor for $60 billion in stock and closed the deal in August. What it means for developers who rely on Cursor.
Anthropic Study: Domain Expertise Predicts Success With Coding Agents
Anthropic's June 16, 2026 study of 400,000 Claude Code sessions found domain expertise, not a coding background, best predicts success with coding agents.
GitHub Copilot SDK Reaches General Availability with .NET Support
GitHub made the Copilot SDK generally available on June 2, 2026, letting .NET, TypeScript, Python and Go apps embed Copilot's agent runtime via a stable API.
Microsoft Unveils Seven In-House MAI Models at Build 2026
At Build 2026 on June 2, Microsoft launched seven in-house MAI models, led by the MAI-Thinking-1 reasoning model and the MAI-Code-1-Flash coding model.
Anthropic Raises $65B Series H at a $965B Valuation, Passing OpenAI
Anthropic raised $65 billion at a $965 billion valuation, topping OpenAI, as run-rate revenue passed $47 billion. What it means for Claude developers.
Google Launches Gemini 3.5 Flash at I/O 2026 for Agents and Coding
Google opened its Gemini 3.5 series at I/O on May 19, 2026, with Gemini 3.5 Flash, which it says beats Gemini 3.1 Pro on agent benchmarks, at $1.50/$9 pricing.
Anthropic Signs Deal for All of SpaceX's Colossus 1 Compute Capacity
On May 6, 2026, Anthropic agreed to use all compute at SpaceX's Colossus 1 data center, over 300 MW and 220,000 NVIDIA GPUs, and raised Claude usage limits.
DeepSeek V4 Released: Open-Weight 1.6T MoE With a 1M-Token Context Built for Agents
DeepSeek released V4-Pro and V4-Flash in April 2026, MIT-licensed open-weight MoE models with a 1M-token context and far cheaper long-context inference.
OpenAI Releases GPT-5.5, Its Strongest Agentic Coding Model Yet
OpenAI released GPT-5.5 on April 23, 2026, with top agentic coding scores and GPT-5.4-level latency, then brought it to the API at $5/$30 per million tokens.
Mistral Small 4: Apache 2.0 Model Unifies Reasoning, Coding and Vision
Mistral AI released Mistral Small 4 in March 2026, an Apache 2.0 open-weight 119B MoE model with 6.5B active parameters that unifies chat, reasoning and coding.
OpenAI Launches GPT-5.4 with Native Computer Use and 1M-Token Context
OpenAI released GPT-5.4 on March 5, 2026, with native computer use, tool search and a 1M-token API context, priced at $2.50 and $15 per million tokens.
Google Releases Gemini 3.1 Pro in Preview with Big Reasoning Gains
Google released Gemini 3.1 Pro in preview on February 19, 2026, reporting 77.1% on ARC-AGI-2, adding a medium thinking level and keeping $2/$12 pricing.
Anthropic Releases Claude Opus 4.6 with a 1M-Token Context Window
Anthropic's Claude Opus 4.6 (February 5, 2026) added a 1M-token context in beta, adaptive thinking and agent teams, while keeping $5/$25 pricing.
Xcode 26.3 Brings Agentic Coding With Claude Agent and OpenAI Codex
Apple announced Xcode 26.3 on February 3, 2026, with built-in agentic coding through Anthropic's Claude Agent and OpenAI's Codex, plus MCP support.
OpenAI Launches a Standalone Codex App for Managing Coding Agents
OpenAI launched a standalone Codex app for Mac on February 2, 2026, built to help developers run and manage several AI coding agents at once. What changed.
Anthropic Publishes Agent Skills as an Open Standard for AI Agents
On December 18, 2025, Anthropic released Agent Skills as an open standard at agentskills.io, making SKILL.md folders portable across AI agents and tools.
Anthropic Acquires Bun as Claude Code Reaches $1B Run-Rate Revenue
Anthropic bought Bun, the MIT-licensed JavaScript runtime behind Claude Code, as its coding agent hit a $1B run rate. What it means for developers.
Google Launches Gemini 3 Pro, Topping LMArena and Debuting Antigravity
Google released Gemini 3 on November 18, 2025, starting with Gemini 3 Pro in preview, which topped LMArena at 1501 Elo and launched with Antigravity.
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 Raises $13B Series F at a $183B Valuation, Led by ICONIQ
Anthropic closed a $13 billion Series F at a $183 billion valuation as run-rate revenue topped $5 billion. What the round signaled for Claude developers.
OpenAI Launches GPT-5, a Unified Model That Decides When to Think
OpenAI released GPT-5 on August 7, 2025, merging fast answers and deep reasoning in one system, with new API controls, lower prices and fewer hallucinations.
Moonshot AI Open-Sources Kimi K2, a 1-Trillion-Parameter Agentic Model
Moonshot AI open-sourced Kimi K2 in July 2025, a 1-trillion-parameter MoE model with 32B active parameters built for tool use, under a modified MIT license.
METR Study Finds Early-2025 AI Tools Slowed Experienced Developers by 19%
A July 2025 METR randomized trial found experienced open-source developers took 19% longer with early-2025 AI tools, though they believed AI made them faster.
Microsoft Open-Sources GitHub Copilot Chat for VS Code Under MIT
On June 30, 2025, Microsoft released the GitHub Copilot Chat extension for VS Code under the MIT license, exposing its agent mode, prompts and telemetry.
Google Launches Gemini CLI, an Open-Source AI Agent for the Terminal
Google released Gemini CLI on June 25, 2025, an Apache 2.0 terminal agent with a free tier, MCP support and a 1M-token context window. Here is what it offers.
Claude Code Is Generally Available, With IDE Extensions and an SDK
Anthropic made Claude Code generally available on May 22, 2025, adding VS Code and JetBrains extensions, GitHub Actions support and the Claude Code SDK.
Anthropic Launches Claude Opus 4 and Claude Sonnet 4 for Coding Agents
Anthropic's Claude Opus 4 and Sonnet 4 (May 22, 2025) led coding benchmarks, added tool use during extended thinking and made Claude Code generally available.
Google DeepMind Unveils AlphaEvolve, a Gemini-Powered Agent That Discovers Algorithms
Google DeepMind introduced AlphaEvolve in May 2025, a Gemini-powered evolutionary coding agent that found faster algorithms and saves 0.7% of Google's compute.
OpenAI Launches GPT-4.1 in the API with a 1M-Token Context Window
OpenAI released GPT-4.1, mini and nano in April 2025: API-first models with a 1M-token context, stronger coding and more literal instruction following.