feat(providers): add Kimi (Moonshot AI) provider (#5716)

* feat(providers): add Kimi (Moonshot AI) provider

* fix(providers): preserve reasoning_content in kimi tool loop

Author: waleedlatif1

apps/sim/app/workspace/[workspaceId]/settings/components/byok/byok.tsx

@@ -20,6 +20,7 @@ import {
   HunterIOIcon,
   IcypeasIcon,
   JinaAIIcon,
+  KimiIcon,
   LeadMagicIcon,
   LinkupIcon,
   MillionVerifierIcon,
@@ -86,6 +87,13 @@ const PROVIDERS: (BYOKManagerProvider & { id: BYOKProviderId })[] = [
     description: 'LLM calls',
     placeholder: 'xai-...',
   },
+  {
+    id: 'kimi',
+    name: 'Kimi',
+    icon: KimiIcon,
+    description: 'LLM calls',
+    placeholder: 'sk-...',
+  },
   {
     id: 'fireworks',
     name: 'Fireworks',
@@ -298,6 +306,7 @@ const PROVIDER_SECTIONS: BYOKProviderSection[] = [
       'google',
       'mistral',
       'xai',
+      'kimi',
       'fireworks',
       'together',
       'baseten',

apps/sim/components/icons.tsx

@@ -3823,6 +3823,20 @@ export const ZaiIcon = (props: SVGProps<SVGSVGElement>) => (
   </svg>
 )
 
+export const KimiIcon = (props: SVGProps<SVGSVGElement>) => (
+  <svg {...props} height='1em' viewBox='0 0 24 24' width='1em' xmlns='http://www.w3.org/2000/svg'>
+    <title>Kimi</title>
+    <path
+      d='M21.846 0a1.923 1.923 0 110 3.846H20.15a.226.226 0 01-.227-.226V1.923C19.923.861 20.784 0 21.846 0z'
+      fill='#1783FF'
+    />
+    <path
+      d='M11.065 11.199l7.257-7.2c.137-.136.06-.41-.116-.41H14.3a.164.164 0 00-.117.051l-7.82 7.756c-.122.12-.302.013-.302-.179V3.82c0-.127-.083-.23-.185-.23H3.186c-.103 0-.186.103-.186.23V19.77c0 .128.083.23.186.23h2.69c.103 0 .186-.102.186-.23v-3.25c0-.069.025-.135.069-.178l2.424-2.406a.158.158 0 01.205-.023l6.484 4.772a7.677 7.677 0 003.453 1.283c.108.012.2-.095.2-.23v-3.06c0-.117-.07-.212-.164-.227a5.028 5.028 0 01-2.027-.807l-5.613-4.064c-.117-.078-.132-.279-.028-.381z'
+      fill='currentColor'
+    />
+  </svg>
+)
+
 export function MetaIcon(props: SVGProps<SVGSVGElement>) {
   const id = useId()
   const gradient1Id = `meta_gradient_1_${id}`

apps/sim/lib/api-key/byok.ts

@@ -206,13 +206,20 @@ export async function getApiKeyWithBYOK(
   const isMistralModel = provider === 'mistral'
   const isZaiModel = provider === 'zai'
   const isXaiModel = provider === 'xai'
+  const isKimiModel = provider === 'kimi'
 
   const byokProviderId = isGeminiModel ? 'google' : (provider as BYOKProviderId)
 
   if (
     isHosted &&
     workspaceId &&
-    (isOpenAIModel || isClaudeModel || isGeminiModel || isMistralModel || isZaiModel || isXaiModel)
+    (isOpenAIModel ||
+      isClaudeModel ||
+      isGeminiModel ||
+      isMistralModel ||
+      isZaiModel ||
+      isXaiModel ||
+      isKimiModel)
   ) {
     const hostedModels = getHostedModels()
     const isModelHosted = hostedModels.some((m) => m.toLowerCase() === model.toLowerCase())

apps/sim/lib/api/contracts/byok-keys.ts

@@ -7,6 +7,7 @@ export const byokProviderIdSchema = z.enum([
   'google',
   'mistral',
   'zai',
+  'kimi',
   'xai',
   'fireworks',
   'together',

apps/sim/lib/core/config/api-keys.ts

@@ -13,7 +13,8 @@ export function getRotatingApiKey(provider: string): string {
     provider !== 'gemini' &&
     provider !== 'cohere' &&
     provider !== 'zai' &&
-    provider !== 'xai'
+    provider !== 'xai' &&
+    provider !== 'kimi'
   ) {
     throw new Error(`No rotation implemented for provider: ${provider}`)
   }
@@ -44,6 +45,10 @@ export function getRotatingApiKey(provider: string): string {
     if (env.XAI_API_KEY_1) keys.push(env.XAI_API_KEY_1)
     if (env.XAI_API_KEY_2) keys.push(env.XAI_API_KEY_2)
     if (env.XAI_API_KEY_3) keys.push(env.XAI_API_KEY_3)
+  } else if (provider === 'kimi') {
+    if (env.KIMI_API_KEY_1) keys.push(env.KIMI_API_KEY_1)
+    if (env.KIMI_API_KEY_2) keys.push(env.KIMI_API_KEY_2)
+    if (env.KIMI_API_KEY_3) keys.push(env.KIMI_API_KEY_3)
   }
 
   if (keys.length === 0) {

apps/sim/lib/core/config/env.ts

@@ -154,6 +154,9 @@ export const env = createEnv({
     ZAI_API_KEY_1:                         z.string().min(1).optional(),           // Primary Z.ai API key for load balancing
     ZAI_API_KEY_2:                         z.string().min(1).optional(),           // Additional Z.ai API key for load balancing
     ZAI_API_KEY_3:                         z.string().min(1).optional(),           // Additional Z.ai API key for load balancing
+    KIMI_API_KEY_1:                        z.string().min(1).optional(),           // Primary Kimi (Moonshot AI) API key for load balancing
+    KIMI_API_KEY_2:                        z.string().min(1).optional(),           // Additional Kimi API key for load balancing
+    KIMI_API_KEY_3:                        z.string().min(1).optional(),           // Additional Kimi API key for load balancing
     XAI_API_KEY_1:                         z.string().min(1).optional(),           // Primary xAI API key for load balancing
     XAI_API_KEY_2:                         z.string().min(1).optional(),           // Additional xAI API key for load balancing
     XAI_API_KEY_3:                         z.string().min(1).optional(),           // Additional xAI API key for load balancing

apps/sim/lib/tokenization/constants.ts

@@ -76,6 +76,11 @@ export const TOKENIZATION_CONFIG = {
       confidence: 'medium',
       supportedMethods: ['heuristic', 'fallback'],
     },
+    kimi: {
+      avgCharsPerToken: 4,
+      confidence: 'medium',
+      supportedMethods: ['heuristic', 'fallback'],
+    },
     ollama: {
       avgCharsPerToken: 4,
       confidence: 'low',

apps/sim/providers/attachments.ts

@@ -39,6 +39,7 @@ export type AttachmentProvider =
   | 'nvidia'
   | 'meta'
   | 'zai'
+  | 'kimi'
 
 export interface PreparedProviderAttachment {
   file: UserFile
@@ -152,6 +153,7 @@ const PROVIDER_SUPPORTED_LABELS: Record<AttachmentProvider, string> = {
   nvidia: 'no file attachments in the current API adapter',
   meta: 'no file attachments in the current API adapter',
   zai: 'no file attachments in the current API adapter',
+  kimi: 'images through image_url message parts on multimodal models',
 }
 
 export function getAttachmentProvider(providerId: ProviderId | string): AttachmentProvider | null {
@@ -175,6 +177,7 @@ export function getAttachmentProvider(providerId: ProviderId | string): Attachme
   if (providerId === 'nvidia') return 'nvidia'
   if (providerId === 'meta') return 'meta'
   if (providerId === 'zai') return 'zai'
+  if (providerId === 'kimi') return 'kimi'
   return null
 }
 
@@ -319,6 +322,7 @@ function isMimeTypeSupportedByProvider(
     case 'vllm':
     case 'litellm':
     case 'xai':
+    case 'kimi':
       return isImageMimeType(mimeType)
     case 'deepseek':
     case 'cerebras':