Best AI Coding Assistants for .NET

ChatGPT by OpenAI is a versatile AI conversational platform that provides assistance in writing, learning, brainstorming, code generation, and problem-solving across a wide range of topics. Available for free with optional Plus and Pro subscription plans, it supports real-time text and voice interactions on web browsers and mobile apps. Users can leverage ChatGPT to create content, summarize meetings, debug code, analyze data, and even generate images using integrated tools like DALL·E 3. The platform is accessible via desktop and mobile devices and offers personalized workflows through custom GPTs and projects. Advanced plans unlock deeper research capabilities, extended limits, and access to cutting-edge AI models like GPT-4o and OpenAI o1 pro mode. ChatGPT integrates search capabilities for real-time information and enables collaboration through features like Canvas for project editing. It caters to students, professionals, hobbyists, and developers seeking efficient, AI-driven support. OpenAI continually updates ChatGPT with new tools and enhanced usability.

Treblle is a federated API Intelligence platform that unifies API visibility, governance, and security in a single enterprise-grade solution. Designed for complex environments, Treblle connects seamlessly through one integration and supports deployment on-prem or in private cloud—meeting even the strictest regulatory and data residency requirements. Once integrated, Treblle instantly maps your entire API landscape with automatic discovery, generating real-time inventories and eliminating shadow APIs. Its observability tools track every request and response, surfacing performance issues, anomalies, and SLA breaches across all services. Advanced analytics give teams insights into traffic, latency, endpoint usage, and client behavior, making debugging, optimization, and scaling easier and 15 times faster. Security is built-in, not bolted on. Treblle provides runtime protection, threat detection, schema validation, and governance policies to safeguard APIs across environments. It empowers DevOps and platform teams to implement shift-left strategies and enforce consistent practices across the lifecycle. With its AI-powered Integration Assistant, Treblle simplifies onboarding and improves developer workflows. Whether you’re running internal microservices or customer-facing APIs, Treblle gives you the clarity and control to move faster, reduce risk, and scale with confidence.

Codespell.ai, an AI-powered coding tool, improves code quality and increases productivity. Its main feature, Design Studio automates project set-up by generating starter-kit codebases and structured designs.

GPT-4.1 represents a significant upgrade in generative AI, with notable advancements in coding, instruction adherence, and handling long contexts. This model supports up to 1 million tokens of context, allowing it to tackle complex, multi-step tasks across various domains. GPT-4.1 outperforms earlier models in key benchmarks, particularly in coding accuracy, and is designed to streamline workflows for developers and businesses by improving task completion speed and reliability.

ZZZ Code AI is an innovative coding assistant powered by artificial intelligence, designed to aid developers in a wide range of programming activities. This platform includes a comprehensive set of tools such as the AI Code Generator, AI Bug Detector, AI Code Explainer, AI Code Refactor, AI Code Review, AI Code Converter, and AI Code Documentation. It accommodates numerous programming languages, including Python, C#, C++, Java, JavaScript, HTML, CSS, SQL, and Excel formulas, thereby catering to a diverse audience. Users can simply enter their coding needs or inquiries, and the AI promptly delivers relevant responses, code snippets, explanations, or necessary conversions. Additionally, there are specialized utilities for particular languages and frameworks, such as Dapper and Entity Framework Core, enhancing its versatility. Access to ZZZ Code AI is available online without requiring users to create an account, although there are character limits in place to deter misuse. Ultimately, ZZZ Code AI is designed to boost productivity and minimize errors for developers of all skill levels by automating repetitive coding tasks and providing real-time support, making coding more efficient and less daunting. Furthermore, the platform promotes learning by allowing users to explore coding concepts through explanations and examples.