feat: add MiniMax chat model and TTS support

packages/components/credentials/MiniMaxApi.credential.ts

@@ -0,0 +1,23 @@
+import { INodeParams, INodeCredential } from '../src/Interface'
+
+class MiniMaxApi implements INodeCredential {
+    label: string
+    name: string
+    version: number
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'MiniMax API'
+        this.name = 'miniMaxApi'
+        this.version = 1.0
+        this.inputs = [
+            {
+                label: 'MiniMax API Key',
+                name: 'miniMaxApiKey',
+                type: 'password'
+            }
+        ]
+    }
+}
+
+module.exports = { credClass: MiniMaxApi }

packages/components/models.json

@@ -1521,6 +1521,23 @@
                 }
             ]
         },
+        {
+            "name": "chatMiniMax",
+            "models": [
+                {
+                    "label": "MiniMax-M2.5",
+                    "name": "MiniMax-M2.5",
+                    "input_cost": 3e-7,
+                    "output_cost": 1.2e-6
+                },
+                {
+                    "label": "MiniMax-M2.5-highspeed",
+                    "name": "MiniMax-M2.5-highspeed",
+                    "input_cost": 6e-7,
+                    "output_cost": 2.4e-6
+                }
+            ]
+        },
         {
             "name": "chatMistralAI",
             "models": [

packages/components/nodes/chatmodels/ChatMiniMax/ChatMiniMax.ts

@@ -0,0 +1,118 @@
+import { ChatAnthropic as LangchainChatAnthropic } from '@langchain/anthropic'
+import { BaseCache } from '@langchain/core/caches'
+import { ICommonObject, INode, INodeData, INodeOptionsValue, INodeParams } from '../../../src/Interface'
+import { getBaseClasses, getCredentialData, getCredentialParam } from '../../../src/utils'
+import { ChatMiniMax, ChatMiniMaxInput } from './FlowiseChatMiniMax'
+import { getModels, MODEL_TYPE } from '../../../src/modelLoader'
+
+class ChatMiniMax_ChatModels implements INode {
+    label: string
+    name: string
+    version: number
+    type: string
+    icon: string
+    category: string
+    description: string
+    baseClasses: string[]
+    credential: INodeParams
+    inputs: INodeParams[]
+
+    constructor() {
+        this.label = 'ChatMiniMax'
+        this.name = 'chatMiniMax'
+        this.version = 1.0
+        this.type = 'ChatMiniMax'
+        this.icon = 'minimax.svg'
+        this.category = 'Chat Models'
+        this.description = 'Wrapper around MiniMax large language models using Anthropic-compatible API'
+        this.baseClasses = [this.type, ...getBaseClasses(LangchainChatAnthropic)]
+        this.credential = {
+            label: 'Connect Credential',
+            name: 'credential',
+            type: 'credential',
+            credentialNames: ['miniMaxApi']
+        }
+        this.inputs = [
+            {
+                label: 'Cache',
+                name: 'cache',
+                type: 'BaseCache',
+                optional: true
+            },
+            {
+                label: 'Model Name',
+                name: 'modelName',
+                type: 'asyncOptions',
+                loadMethod: 'listModels',
+                default: 'MiniMax-M2.5'
+            },
+            {
+                label: 'Temperature',
+                name: 'temperature',
+                type: 'number',
+                step: 0.1,
+                default: 1.0,
+                optional: true
+            },
+            {
+                label: 'Streaming',
+                name: 'streaming',
+                type: 'boolean',
+                default: true,
+                optional: true,
+                additionalParams: true
+            },
+            {
+                label: 'Max Tokens',
+                name: 'maxTokens',
+                type: 'number',
+                step: 1,
+                optional: true,
+                additionalParams: true
+            },
+            {
+                label: 'Top P',
+                name: 'topP',
+                type: 'number',
+                step: 0.1,
+                optional: true,
+                additionalParams: true
+            }
+        ]
+    }
+
+    //@ts-ignore
+    loadMethods = {
+        async listModels(): Promise<INodeOptionsValue[]> {
+            return await getModels(MODEL_TYPE.CHAT, 'chatMiniMax')
+        }
+    }
+
+    async init(nodeData: INodeData, _: string, options: ICommonObject): Promise<any> {
+        const temperature = nodeData.inputs?.temperature as string
+        const modelName = nodeData.inputs?.modelName as string
+        const maxTokens = nodeData.inputs?.maxTokens as string
+        const topP = nodeData.inputs?.topP as string
+        const streaming = nodeData.inputs?.streaming as boolean
+        const cache = nodeData.inputs?.cache as BaseCache
+
+        const credentialData = await getCredentialData(nodeData.credential ?? '', options)
+        const miniMaxApiKey = getCredentialParam('miniMaxApiKey', credentialData, nodeData)
+
+        const obj: ChatMiniMaxInput = {
+            modelName,
+            miniMaxApiKey,
+            streaming: streaming ?? true
+        }
+
+        if (temperature) obj.temperature = parseFloat(temperature)
+        if (maxTokens) obj.maxTokens = parseInt(maxTokens, 10)
+        if (topP) obj.topP = parseFloat(topP)
+        if (cache) obj.cache = cache
+
+        const model = new ChatMiniMax(nodeData.id, obj)
+        return model
+    }
+}
+
+module.exports = { nodeClass: ChatMiniMax_ChatModels }

packages/components/nodes/chatmodels/ChatMiniMax/FlowiseChatMiniMax.ts

@@ -0,0 +1,41 @@
+import { ChatAnthropic as LangchainChatAnthropic, AnthropicInput } from '@langchain/anthropic'
+import { type BaseChatModelParams } from '@langchain/core/language_models/chat_models'
+
+export interface ChatMiniMaxInput extends Partial<AnthropicInput>, BaseChatModelParams {
+    miniMaxApiKey?: string
+}
+
+export class ChatMiniMax extends LangchainChatAnthropic {
+    configuredModel: string
+    configuredMaxToken?: number
+    id: string
+
+    constructor(id: string, fields?: ChatMiniMaxInput) {
+        const miniMaxApiKey = fields?.miniMaxApiKey || fields?.anthropicApiKey
+
+        super({
+            ...fields,
+            anthropicApiKey: miniMaxApiKey,
+            clientOptions: {
+                baseURL: 'https://api.minimax.io/anthropic'
+            }
+        })
+
+        this.id = id
+        this.configuredModel = fields?.modelName || 'MiniMax-M2.5'
+        this.configuredMaxToken = fields?.maxTokens
+
+        // @langchain/anthropic defaults topP and topK to -1 as an "unset" sentinel and
+        // always serialises them into the request body.  The real Anthropic API accepts
+        // -1 silently, but MiniMax's Anthropic-compatible endpoint requires top_p/top_k
+        // to be in (0, 1].  Setting them to undefined causes JSON.stringify to omit the
+        // fields entirely so MiniMax applies its own defaults.
+        if (fields?.topP === undefined) this.topP = undefined as unknown as number
+        if (fields?.topK === undefined) this.topK = undefined as unknown as number
+    }
+
+    revertToOriginalModel(): void {
+        this.modelName = this.configuredModel
+        this.maxTokens = this.configuredMaxToken
+    }
+}

packages/components/src/textToSpeech.ts

@@ -7,7 +7,8 @@ import type { ReadableStream } from 'node:stream/web'
 
 const TextToSpeechType = {
     OPENAI_TTS: 'openai',
-    ELEVEN_LABS_TTS: 'elevenlabs'
+    ELEVEN_LABS_TTS: 'elevenlabs',
+    MINIMAX_TTS: 'minimax'
 }
 
 export const convertTextToSpeechStream = async (
@@ -100,6 +101,118 @@ export const convertTextToSpeechStream = async (
                             })
                             break
                         }
+
+                        case TextToSpeechType.MINIMAX_TTS: {
+                            onStart('mp3')
+
+                            const apiKey = credentialData.miniMaxApiKey
+                            if (!apiKey) {
+                                throw new Error('MiniMax API Key is required')
+                            }
+
+                            const voiceId = textToSpeechConfig.voice || 'English_expressive_narrator'
+                            const model = textToSpeechConfig.model || 'speech-2.8-hd'
+
+                            const requestBody: Record<string, unknown> = {
+                                model: model,
+                                text: text,
+                                stream: true,
+                                language_boost: 'auto',
+                                output_format: 'hex',
+                                voice_setting: {
+                                    voice_id: voiceId,
+                                    speed: textToSpeechConfig.speed ?? 1.0,
+                                    vol: textToSpeechConfig.vol ?? 1.0,
+                                    pitch: textToSpeechConfig.pitch ?? 0
+                                },
+                                audio_setting: {
+                                    format: 'mp3',
+                                    sample_rate: 32000,
+                                    bitrate: 128000,
+                                    channel: 1
+                                }
+                            }
+
+                            const response = await fetch('https://api.minimax.io/v1/t2a_v2', {
+                                method: 'POST',
+                                headers: {
+                                    'Content-Type': 'application/json',
+                                    Authorization: `Bearer ${apiKey}`
+                                },
+                                body: JSON.stringify(requestBody),
+                                signal: abortController.signal
+                            })
+
+                            if (!response.ok) {
+                                const errorText = await response.text()
+                                throw new Error(`MiniMax TTS API error: ${response.status} - ${errorText}`)
+                            }
+
+                            if (!response.body) {
+                                throw new Error('Failed to get response stream from MiniMax')
+                            }
+
+                            const reader = response.body.getReader()
+                            const decoder = new TextDecoder()
+                            let sseBuffer = ''
+
+                            const processMinimaxStream = async () => {
+                                for (;;) {
+                                    if (abortController.signal.aborted) {
+                                        reader.cancel()
+                                        streamDestroyed = true
+                                        reject(new Error('TTS generation aborted'))
+                                        return
+                                    }
+
+                                    const { done, value } = await reader.read()
+                                    if (done) break
+
+                                    sseBuffer += decoder.decode(value, { stream: true })
+                                    const lines = sseBuffer.split('\n')
+                                    sseBuffer = lines.pop() || ''
+
+                                    for (const line of lines) {
+                                        const trimmedLine = line.trim()
+                                        if (!trimmedLine || trimmedLine.startsWith(':')) {
+                                            continue
+                                        }
+
+                                        if (trimmedLine.startsWith('data:')) {
+                                            const jsonStr = trimmedLine.slice(5).trim()
+                                            if (!jsonStr) continue
+
+                                            try {
+                                                const eventData = JSON.parse(jsonStr)
+
+                                                if (eventData.base_resp?.status_code !== 0) {
+                                                    const errorMsg = eventData.base_resp?.status_msg || 'Unknown error'
+                                                    reject(new Error(`MiniMax TTS error: ${errorMsg}`))
+                                                    return
+                                                }
+
+                                                if (eventData.data?.audio) {
+                                                    const audioChunk = Buffer.from(eventData.data.audio, 'hex')
+                                                    onChunk(audioChunk)
+                                                }
+
+                                                if (eventData.data?.status === 2) {
+                                                    break
+                                                }
+                                            } catch {
+                                                // Skip malformed JSON
+                                            }
+                                        }
+                                    }
+                                }
+
+                                onEnd()
+                                resolve()
+                            }
+
+                            await processMinimaxStream()
+                            break
+                        }
                     }
                 } else {
                     reject(new Error('Text to speech is not selected. Please configure TTS in the chatflow.'))
@@ -234,6 +347,18 @@ export const getVoices = async (provider: string, credentialId: string, options:
             }))
         }
 
+        case TextToSpeechType.MINIMAX_TTS: {
+            return [
+                // English voices (official recommended)
+                { id: 'English_expressive_narrator', name: 'Expressive Narrator', category: 'English' },
+                { id: 'English_Graceful_Lady', name: 'Graceful Lady', category: 'English' },
+                { id: 'English_Insightful_Speaker', name: 'Insightful Speaker', category: 'English' },
+                { id: 'English_radiant_girl', name: 'Radiant Girl', category: 'English' },
+                { id: 'English_Persuasive_Man', name: 'Persuasive Man', category: 'English' },
+                { id: 'English_Lucky_Robot', name: 'Lucky Robot', category: 'English' }
+            ]
+        }
+
         default:
             throw new Error(`Unsupported TTS provider: ${provider}`)
     }