[Project Application] OpenSonnet4.6 - A Unified 100% C# Multimodal AI Model

OpenSonnet4.6 is a high-performance, multimodal AI model architected to be the .NET ecosystem's answer to Claude 4.6. It is designed for agentic reasoning and high-velocity coding tasks with a native 1-million token context window.

The project’s primary innovation is its Unified C# Stack. We have eliminated the reliance on Python, C++, and external shading languages. By utilizing ILGPU and Silk.NET.Vulkan, all tensor math and compute kernels are authored in pure C#, allowing the .NET JIT to optimize execution directly for the user's GPU hardware.

Registry ID: ai-generated-ai-models/opensonnet-4-6

Root Namespace: OpenSonnet4.6

License: Apache 2.0

Target Foundation: dotnet-foundation

Reviewer Access Instructions

To review the generated architectural blueprints, ILGPU kernels, and engine logic:

Navigate to chat.z.ai.

Sign in using a Google account.

Access the shared OpenSonnet4.6 development workspace.

Technical Architecture

No "Language Impedance Mismatch": Kernels reside in the OpenSonnet4.6.Kernels namespace as pure C# static methods.

ILGPU JIT Pipeline: C# IL is compiled at runtime into native hardware instructions (PTX/SPIR-V), bypassing the need for separate toolchains (Slang/GLSL).

Vulkan 1.4 Baseline: Leverages Buffer Device Addresses and Cooperative Matrices for zero-copy memory management and hardware-specific tensor acceleration.

Integration: Fully implements the Microsoft.Extensions.AI.IChatClient interface for drop-in compatibility.

Alignment with .NET Foundation Goals

Transparency: By removing "Black Box" binaries, every line of the model's math is human-readable and auditable by any C# developer.

Performance: Demonstrates that C# can achieve a 40% performance lead over traditional Python-based stacks through tighter hardware coupling.

Innovation: Solves the 1M-token memory bottleneck using modern GPU paradigms (Vulkan 1.4) and modern .NET 11 features.

Current Status

The architectural blueprints and initial kernels have been generated using GLM-5V-Turbo at chat.z.ai. We are seeking dotnet-foundation stewardship to scale the development of the 100% C# inference and training pipelines.
Checklist

[x] Project is Open Source (Apache 2.0)

[x] Codebase is 100% C# (excluding standard interop)

[x] Follows .NET Namespace and PascalCase Guidelines

[x] Verified handle for dotnet-foundation integration

[x] Authentication path (Google Account) specified for reviewers

Sign-in Verification for chat.z.ai

When you log in to finalize the session, use this verification statement:

"I am the lead architect for OpenSonnet4.6, a project proposed for the dotnet-foundation. I am finalizing the ai-generated-ai-models/opensonnet-4-6 engine using a 100% C# IL-to-Vulkan pipeline. This workspace is prepared for Foundation review via Google Account authentication."

The issue names no repository files, tests, or implementation entry points; it directs reviewers to an external chat.z.ai workspace containing the architectural blueprints and kernels. Start by checking whether a repository and contribution path exist, then identify a scoped task with verifiable tests or outputs. A definition of done is not established in the issue.