Port the remaining open weights we decided to name

app/MindWork AI Studio/Models/Cohere/AyaFamily.cs

@@ -0,0 +1,30 @@
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.Cohere;
+
+/// <summary>
+/// Aya, which comes from Cohere as well and was not built for tools.
+/// </summary>
+/// <remarks>
+/// Their documentation says it in as many words, which is why these are a family of their own
+/// rather than a variant of Command: everything the Command rules state would be wrong here.
+/// </remarks>
+public sealed class AyaFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.COHERE;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://docs.cohere.com/docs/aya", new DateOnly(2026, 9, 11), "Ported unchanged from the Aya block of ProviderExtensions.OpenSource.cs.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
+        builder.Rule("aya-expanse").AsSubstring()
+            .Capabilities(TEXT_INPUT | TEXT_OUTPUT)
+            .Apis(CHAT_COMPLETION_API);
+
+        builder.Rule("aya-vision").AsSubstring().Inherits()
+            .Capabilities(MULTIPLE_IMAGE_INPUT);
+    }
+}

app/MindWork AI Studio/Models/Cohere/CommandFamily.cs

@@ -0,0 +1,41 @@
+using static AIStudio.Provider.Capability;
+
+namespace AIStudio.Models.Cohere;
+
+/// <summary>
+/// Command, the Cohere line built for tool use.
+/// </summary>
+/// <remarks>
+/// Most of the line calls functions, in one step and in several, so the family states it. Command A
+/// Vision is the exception Cohere names outright: tool use is not supported with it.
+/// </remarks>
+public sealed class CommandFamily : ModelFamily
+{
+    /// <inheritdoc />
+    public override ModelVendor Vendor => ModelVendor.COHERE;
+
+    /// <inheritdoc />
+    public override ModelSource Source => new("https://docs.cohere.com/docs/models", new DateOnly(2026, 9, 11), "Ported unchanged from the Command block of ProviderExtensions.OpenSource.cs.");
+
+    /// <inheritdoc />
+    protected override void Declare(ModelFamilyBuilder builder)
+    {
+        builder.Rule("command-a").AsSubstring()
+            .Capabilities(TEXT_INPUT | TEXT_OUTPUT | FUNCTION_CALLING)
+            .Apis(CHAT_COMPLETION_API);
+
+        builder.Rule("command-r").AsSubstring().Inherits();
+
+        // Command A+ sees, and thinks unless the request turns the thinking off:
+        builder.Rule("command-a-plus").AsSubstring().Inherits()
+            .Capabilities(MULTIPLE_IMAGE_INPUT)
+            .Reasoning(ReasoningSupport.ON_BY_DEFAULT);
+
+        builder.Rule("command-a-reasoning").AsSubstring().InheritsFrom("command-r")
+            .Reasoning(ReasoningSupport.ON_BY_DEFAULT);
+
+        builder.Rule("command-a-vision").AsSubstring()
+            .Capabilities(TEXT_INPUT | MULTIPLE_IMAGE_INPUT | TEXT_OUTPUT)
+            .Apis(CHAT_COMPLETION_API);
+    }
+}