diff --git a/src/common/stores/llms/modelconfiguration.types.ts b/src/common/stores/llms/modelconfiguration.types.ts
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index 000000000..b2d69ff38
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+++ b/src/common/stores/llms/modelconfiguration.types.ts
@@ -0,0 +1,55 @@
+import type { DLLMId } from './llms.types';
+import type { DModelParameterValues } from './llms.parameters';
+
+
+export type DModelConfiguration = DModelConfigurationParametric;
+
+type DModelConfigurationParametric = {
+  mct: 'model-parametric';
+
+  // simpler version of a search space
+  domainId: DModelDomainId;
+
+  // configuration of the model and its parameters
+  // NOTE: this is flattened into DLLM already, with a base and user override configuration
+  modelId: DLLMId | null;
+  modelParameters?: DModelParameterValues; // this is an override, to be overlaid on top of other configurations, if any
+}
+
+type DModelDomainId = 'primaryChat' | 'fastUtil';
+
+
+/// Future: Model Search Space ///
+
+/*
+
+NOTE: the following is not ready and is even misleading.
+      For now, we'll only have a single type for the domainId, for tracking.
+
+ModelSpace - ideas:
+- Tiers: primary, secondary, utility, ...
+- Capabilities: expert, standard, basic, ...
+- Functions: reasoning, creative, processing, ...
+- Domains: general, specialized, task-specific, ...
+
+const ModelSpaceDimensionRegistry = {
+
+  modelTier: {
+    label: 'Model Tier',
+    type: 'enum' as const,
+    values: ['primary', 'utility'] as const,
+    description: 'The tier of the model',
+  } as const,
+
+  modelFunction: {
+    label: 'Model Function',
+    type: 'enum' as const,
+    values: ['reasoning', 'creative', 'processing'] as const,
+    description: 'The primary function of the model',
+  }
+
+  // ...
+
+} as const;
+
+*/
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