diff --git a/apps/sim/app/api/providers/base/models/route.ts b/apps/sim/app/api/providers/base/models/route.ts
new file mode 100644
index 0000000000..6733eaf5f4
--- /dev/null
+++ b/apps/sim/app/api/providers/base/models/route.ts
@@ -0,0 +1,11 @@
+import { NextResponse } from 'next/server'
+import { getBaseModelProviders } from '@/providers/utils'
+
+export async function GET() {
+  try {
+    const allModels = Object.keys(getBaseModelProviders())
+    return NextResponse.json({ models: allModels })
+  } catch (error) {
+    return NextResponse.json({ models: [], error: 'Failed to fetch models' }, { status: 500 })
+  }
+}
diff --git a/apps/sim/app/api/providers/openrouter/models/route.ts b/apps/sim/app/api/providers/openrouter/models/route.ts
index efe5ad9e40..d2b0e65e62 100644
--- a/apps/sim/app/api/providers/openrouter/models/route.ts
+++ b/apps/sim/app/api/providers/openrouter/models/route.ts
@@ -1,10 +1,19 @@
 import { type NextRequest, NextResponse } from 'next/server'
 import { createLogger } from '@/lib/logs/console/logger'
+import { filterBlacklistedModels } from '@/providers/utils'
 
 const logger = createLogger('OpenRouterModelsAPI')
 
 export const dynamic = 'force-dynamic'
 
+interface OpenRouterModel {
+  id: string
+}
+
+interface OpenRouterResponse {
+  data: OpenRouterModel[]
+}
+
 export async function GET(_request: NextRequest) {
   try {
     const response = await fetch('https://openrouter.ai/api/v1/models', {
@@ -20,20 +29,13 @@ export async function GET(_request: NextRequest) {
       return NextResponse.json({ models: [] })
     }
 
-    const data = await response.json()
-    const models = Array.isArray(data?.data)
-      ? Array.from(
-          new Set(
-            data.data
-              .map((m: any) => m?.id)
-              .filter((id: unknown): id is string => typeof id === 'string' && id.length > 0)
-              .map((id: string) => `openrouter/${id}`)
-          )
-        )
-      : []
+    const data = (await response.json()) as OpenRouterResponse
+    const allModels = Array.from(new Set(data.data?.map((model) => `openrouter/${model.id}`) ?? []))
+    const models = filterBlacklistedModels(allModels)
 
     logger.info('Successfully fetched OpenRouter models', {
       count: models.length,
+      filtered: allModels.length - models.length,
     })
 
     return NextResponse.json({ models })
diff --git a/apps/sim/blocks/blocks/agent.ts b/apps/sim/blocks/blocks/agent.ts
index 93f20c46b5..4804822b62 100644
--- a/apps/sim/blocks/blocks/agent.ts
+++ b/apps/sim/blocks/blocks/agent.ts
@@ -5,7 +5,6 @@ import type { BlockConfig } from '@/blocks/types'
 import { AuthMode } from '@/blocks/types'
 import {
   getAllModelProviders,
-  getBaseModelProviders,
   getHostedModels,
   getMaxTemperature,
   getProviderIcon,
@@ -164,9 +163,9 @@ Create a system prompt appropriately detailed for the request, using clear langu
       required: true,
       options: () => {
         const providersState = useProvidersStore.getState()
+        const baseModels = providersState.providers.base.models
         const ollamaModels = providersState.providers.ollama.models
         const openrouterModels = providersState.providers.openrouter.models
-        const baseModels = Object.keys(getBaseModelProviders())
         const allModels = Array.from(new Set([...baseModels, ...ollamaModels, ...openrouterModels]))
 
         return allModels.map((model) => {
diff --git a/apps/sim/blocks/blocks/evaluator.ts b/apps/sim/blocks/blocks/evaluator.ts
index 3c208021c1..96902e8e8d 100644
--- a/apps/sim/blocks/blocks/evaluator.ts
+++ b/apps/sim/blocks/blocks/evaluator.ts
@@ -5,7 +5,6 @@ import type { BlockConfig, ParamType } from '@/blocks/types'
 import type { ProviderId } from '@/providers/types'
 import {
   getAllModelProviders,
-  getBaseModelProviders,
   getHostedModels,
   getProviderIcon,
   providers,
@@ -189,9 +188,9 @@ export const EvaluatorBlock: BlockConfig<EvaluatorResponse> = {
       required: true,
       options: () => {
         const providersState = useProvidersStore.getState()
+        const baseModels = providersState.providers.base.models
         const ollamaModels = providersState.providers.ollama.models
         const openrouterModels = providersState.providers.openrouter.models
-        const baseModels = Object.keys(getBaseModelProviders())
         const allModels = Array.from(new Set([...baseModels, ...ollamaModels, ...openrouterModels]))
 
         return allModels.map((model) => {
diff --git a/apps/sim/blocks/blocks/guardrails.ts b/apps/sim/blocks/blocks/guardrails.ts
index 3b08f9e248..0cf9c6b1cd 100644
--- a/apps/sim/blocks/blocks/guardrails.ts
+++ b/apps/sim/blocks/blocks/guardrails.ts
@@ -1,7 +1,7 @@
 import { ShieldCheckIcon } from '@/components/icons'
 import { isHosted } from '@/lib/environment'
 import type { BlockConfig } from '@/blocks/types'
-import { getBaseModelProviders, getHostedModels, getProviderIcon } from '@/providers/utils'
+import { getHostedModels, getProviderIcon } from '@/providers/utils'
 import { useProvidersStore } from '@/stores/providers/store'
 import type { ToolResponse } from '@/tools/types'
 
@@ -99,9 +99,9 @@ export const GuardrailsBlock: BlockConfig<GuardrailsResponse> = {
       required: true,
       options: () => {
         const providersState = useProvidersStore.getState()
+        const baseModels = providersState.providers.base.models
         const ollamaModels = providersState.providers.ollama.models
         const openrouterModels = providersState.providers.openrouter.models
-        const baseModels = Object.keys(getBaseModelProviders())
         const allModels = Array.from(new Set([...baseModels, ...ollamaModels, ...openrouterModels]))
 
         return allModels.map((model) => {
diff --git a/apps/sim/blocks/blocks/router.ts b/apps/sim/blocks/blocks/router.ts
index 554e0f03a5..cb06ac211c 100644
--- a/apps/sim/blocks/blocks/router.ts
+++ b/apps/sim/blocks/blocks/router.ts
@@ -4,7 +4,6 @@ import { AuthMode, type BlockConfig } from '@/blocks/types'
 import type { ProviderId } from '@/providers/types'
 import {
   getAllModelProviders,
-  getBaseModelProviders,
   getHostedModels,
   getProviderIcon,
   providers,
@@ -136,9 +135,9 @@ export const RouterBlock: BlockConfig<RouterResponse> = {
       required: true,
       options: () => {
         const providersState = useProvidersStore.getState()
+        const baseModels = providersState.providers.base.models
         const ollamaModels = providersState.providers.ollama.models
         const openrouterModels = providersState.providers.openrouter.models
-        const baseModels = Object.keys(getBaseModelProviders())
         const allModels = Array.from(new Set([...baseModels, ...ollamaModels, ...openrouterModels]))
 
         return allModels.map((model) => {
diff --git a/apps/sim/blocks/blocks/translate.ts b/apps/sim/blocks/blocks/translate.ts
index a4e4f5c199..72c3c7f986 100644
--- a/apps/sim/blocks/blocks/translate.ts
+++ b/apps/sim/blocks/blocks/translate.ts
@@ -3,7 +3,6 @@ import { isHosted } from '@/lib/environment'
 import { AuthMode, type BlockConfig } from '@/blocks/types'
 import {
   getAllModelProviders,
-  getBaseModelProviders,
   getHostedModels,
   getProviderIcon,
   providers,
@@ -61,9 +60,9 @@ export const TranslateBlock: BlockConfig = {
       required: true,
       options: () => {
         const providersState = useProvidersStore.getState()
+        const baseModels = providersState.providers.base.models
         const ollamaModels = providersState.providers.ollama.models
         const openrouterModels = providersState.providers.openrouter.models
-        const baseModels = Object.keys(getBaseModelProviders())
         const allModels = Array.from(new Set([...baseModels, ...ollamaModels, ...openrouterModels]))
 
         return allModels.map((model) => {
diff --git a/apps/sim/lib/env.ts b/apps/sim/lib/env.ts
index 02e8807864..dbe133cd36 100644
--- a/apps/sim/lib/env.ts
+++ b/apps/sim/lib/env.ts
@@ -79,6 +79,7 @@ export const env = createEnv({
     OLLAMA_URL:                            z.string().url().optional(),            // Ollama local LLM server URL
     ELEVENLABS_API_KEY:                    z.string().min(1).optional(),           // ElevenLabs API key for text-to-speech in deployed chat
     SERPER_API_KEY:                        z.string().min(1).optional(),           // Serper API key for online search
+    DEEPSEEK_MODELS_ENABLED:               z.boolean().optional().default(false),  // Enable Deepseek models in UI (defaults to false for compliance)
 
     // Azure Configuration - Shared credentials with feature-specific models
     AZURE_OPENAI_ENDPOINT:                 z.string().url().optional(),            // Shared Azure OpenAI service endpoint
diff --git a/apps/sim/providers/utils.ts b/apps/sim/providers/utils.ts
index 5a92fcb4ab..f10b4f0afa 100644
--- a/apps/sim/providers/utils.ts
+++ b/apps/sim/providers/utils.ts
@@ -1,3 +1,4 @@
+import { getEnv, isTruthy } from '@/lib/env'
 import { isHosted } from '@/lib/environment'
 import { createLogger } from '@/lib/logs/console/logger'
 import { anthropicProvider } from '@/providers/anthropic'
@@ -129,8 +130,8 @@ export async function updateOpenRouterProviderModels(models: string[]): Promise<
 }
 
 export function getBaseModelProviders(): Record<string, ProviderId> {
-  return Object.entries(providers)
-    .filter(([providerId]) => providerId !== 'ollama')
+  const allProviders = Object.entries(providers)
+    .filter(([providerId]) => providerId !== 'ollama' && providerId !== 'openrouter')
     .reduce(
       (map, [providerId, config]) => {
         config.models.forEach((model) => {
@@ -140,6 +141,20 @@ export function getBaseModelProviders(): Record<string, ProviderId> {
       },
       {} as Record<string, ProviderId>
     )
+
+  return filterBlacklistedModelsFromProviderMap(allProviders)
+}
+
+function filterBlacklistedModelsFromProviderMap(
+  providerMap: Record<string, ProviderId>
+): Record<string, ProviderId> {
+  const filtered: Record<string, ProviderId> = {}
+  for (const [model, providerId] of Object.entries(providerMap)) {
+    if (!isModelBlacklisted(model)) {
+      filtered[model] = providerId
+    }
+  }
+  return filtered
 }
 
 export function getAllModelProviders(): Record<string, ProviderId> {
@@ -197,6 +212,44 @@ export function getProviderModels(providerId: ProviderId): string[] {
   return getProviderModelsFromDefinitions(providerId)
 }
 
+interface ModelBlacklist {
+  models: string[]
+  prefixes: string[]
+  envOverride?: string
+}
+
+const MODEL_BLACKLISTS: ModelBlacklist[] = [
+  {
+    models: ['deepseek-chat', 'deepseek-v3', 'deepseek-r1'],
+    prefixes: ['openrouter/deepseek', 'openrouter/tngtech'],
+    envOverride: 'DEEPSEEK_MODELS_ENABLED',
+  },
+]
+
+function isModelBlacklisted(model: string): boolean {
+  const lowerModel = model.toLowerCase()
+
+  for (const blacklist of MODEL_BLACKLISTS) {
+    if (blacklist.envOverride && isTruthy(getEnv(blacklist.envOverride))) {
+      continue
+    }
+
+    if (blacklist.models.includes(lowerModel)) {
+      return true
+    }
+
+    if (blacklist.prefixes.some((prefix) => lowerModel.startsWith(prefix))) {
+      return true
+    }
+  }
+
+  return false
+}
+
+export function filterBlacklistedModels(models: string[]): string[] {
+  return models.filter((model) => !isModelBlacklisted(model))
+}
+
 /**
  * Get provider icon for a given model
  */
diff --git a/apps/sim/stores/providers/store.ts b/apps/sim/stores/providers/store.ts
index 5c258ffda8..f8bb27159c 100644
--- a/apps/sim/stores/providers/store.ts
+++ b/apps/sim/stores/providers/store.ts
@@ -6,6 +6,11 @@ import type { ProviderConfig, ProviderName, ProvidersStore } from './types'
 const logger = createLogger('ProvidersStore')
 
 const PROVIDER_CONFIGS: Record<ProviderName, ProviderConfig> = {
+  base: {
+    apiEndpoint: '/api/providers/base/models',
+    dedupeModels: true,
+    updateFunction: () => {},
+  },
   ollama: {
     apiEndpoint: '/api/providers/ollama/models',
     updateFunction: updateOllamaProviderModels,
@@ -42,6 +47,7 @@ const fetchProviderModels = async (provider: ProviderName): Promise<string[]> =>
 
 export const useProvidersStore = create<ProvidersStore>((set, get) => ({
   providers: {
+    base: { models: [], isLoading: false },
     ollama: { models: [], isLoading: false },
     openrouter: { models: [], isLoading: false },
   },
@@ -120,6 +126,7 @@ export const useProvidersStore = create<ProvidersStore>((set, get) => ({
 if (typeof window !== 'undefined') {
   setTimeout(() => {
     const store = useProvidersStore.getState()
+    store.fetchModels('base')
     store.fetchModels('ollama')
     store.fetchModels('openrouter')
   }, 1000)
diff --git a/apps/sim/stores/providers/types.ts b/apps/sim/stores/providers/types.ts
index 4aabdf4f80..de42617281 100644
--- a/apps/sim/stores/providers/types.ts
+++ b/apps/sim/stores/providers/types.ts
@@ -1,4 +1,4 @@
-export type ProviderName = 'ollama' | 'openrouter'
+export type ProviderName = 'ollama' | 'openrouter' | 'base'
 
 export interface ProviderState {
   models: string[]