Does your agent only support these fixed models?

[yangnuowei88]

when const selectLedgerAgent = stagehand.agent({ model: { provider: 'deepseek', modelName: 'deepseek-chat', apiKey: process.env.SILICONFLOW_API_KEY || '', baseURL: 'https://api.siliconflow.cn/v1', }, })

but you doc not Refer to

[tkattkat]

Hey yang, you need to pass the model in the "provider/modelname" format ex model: "google/gemini-3-flash-preview",

if there is a provider we do not directly support, you can also use it through setting a custom baseurl in model like below

model: {
modelName: "openai/gpt-5",
apiKey: process.env.OPENAI_API_KEY,
baseURL: "urlhere",
},

[yangnuowei88]

const loginAgent = stagehand.agent({
  model: {
    modelName: 'deepseek/deepseek-chat',
    apiKey: process.env.SILICONFLOW_API_KEY || '',
    baseURL: 'https://api.siliconflow.cn/v1',
  },
})

const loginResult = await loginAgent.execute({
instruction: `

    1. input to username "${AUTH_CONFIG.username}"
    2. input to password "${AUTH_CONFIG.password}"
  `,
})

but the loginResult return is
{success: false, actions: Array(0), message: 'Failed to execute task: Bad Request', completed: false, messages: Array(1)}

when
stagehand = new Stagehand({
env: 'LOCAL',
localBrowserLaunchOptions: {
headless: false,
viewport: { width: 1920, height: 1080 },
ignoreHTTPSErrors: true,
},
verbose: 2,
domSettleTimeout: 3000,
cacheDir: CACHE_DIR,
llmClient: new CustomOpenAIClient({
modelName: selectedModel,
client: new OpenAI({
apiKey: apiKey,
baseURL: 'https://api.siliconflow.cn/v1',
}) as any,
}),
})

is ok