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The C# SDK is in preview and is not yet published to NuGet.
The local wrapper at packages/sdk/sdk-csharp/Client.cs currently exposes high-level helpers for chat, responses, Anthropic messages, images, audio, embeddings, moderations, files, batches, videos, generations, models/providers/endpoints/organisations/pricing, API-key discovery and lifecycle mutations, workspace/current-key lifecycle helpers, pricing calculation, activity/credits/analytics, health checks, model lifecycle validation, and async-job websocket URLs through both direct helpers and client.AsyncJobs.WebSocketUrl(...). 
using PhaseoSdk;

var client = new Phaseo("YOUR_KEY");
var models = await client.ListModels(new Dictionary<string, string> { ["limit"] = "5" });
Last modified on July 9, 2026