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Impossibl 標誌Impossibl

透過 Mastra 的模型路由器存取 76 個 Impossibl 模型。系統會自動使用 IMPOSSIBL_API_KEY 環境變數完成身分驗證。

如需進一步了解，請參閱Impossibl 文件。

.env
IMPOSSIBL_API_KEY=your-api-key
src/mastra/agents/my-agent.ts
import { Agent } from '@mastra/core/agent'

const agent = new Agent({
  id: 'my-agent',
  name: 'My Agent',
  instructions: 'You are a helpful assistant',
  model: 'impossibl/anthropic/claude-fable-5',
})

// Generate a response
const response = await agent.generate('Hello!')

// Stream a response
const stream = await agent.stream('Tell me a story')
for await (const chunk of stream) {
  console.log(chunk)
}
資訊

Mastra 使用與 OpenAI 相容的 /chat/completions endpoint。部分 Provider 特有功能可能無法使用，詳情請參閱Impossibl 文件。

模型
「模型」的直接連結

ModelContextToolsReasoningImageAudioVideoInput $/1MOutput $/1M
impossibl/anthropic/claude-fable-51.0M$10$50
impossibl/anthropic/claude-haiku-4-5200K$1$5
impossibl/anthropic/claude-opus-4-5200K$5$25
impossibl/anthropic/claude-opus-4-61.0M$5$25
impossibl/anthropic/claude-opus-4-71.0M$5$25
impossibl/anthropic/claude-opus-4-81.0M$5$25
impossibl/anthropic/claude-sonnet-4-5200K$3$15
impossibl/anthropic/claude-sonnet-4-61.0M$3$15
impossibl/anthropic/claude-sonnet-51.0M$2$10
impossibl/cerebras/gpt-oss-120b131K$0.35$0.75
impossibl/deepseek/deepseek-v4-flash1.0M$0.19$0.51
impossibl/deepseek/deepseek-v4-pro1.0M$2$3
impossibl/fireworks/glm-5.21.0M$1$4
impossibl/fireworks/gpt-oss-120b131K$0.15$0.60
impossibl/fireworks/gpt-oss-20b131K$0.07$0.30
impossibl/google/gemini-2.5-flash1.0M$0.30$3
impossibl/google/gemini-2.5-flash-lite1.0M$0.10$0.40
impossibl/google/gemini-2.5-pro1.0M$1$10
impossibl/google/gemini-3.1-flash-lite1.0M$0.25$2
impossibl/google/gemini-3.1-pro-preview1.0M$2$12
impossibl/google/gemini-3.5-flash1.0M$2$9
impossibl/google/gemini-3.5-flash-lite1.0M$0.30$3
impossibl/google/gemini-3.6-flash1.0M$2$8
impossibl/groq/gpt-oss-120b131K$0.15$0.60
impossibl/groq/gpt-oss-20b131K$0.07$0.30
impossibl/moonshotai/kimi-k31.0M$3$15
impossibl/openai/gpt-3.5-turbo16K$0.50$2
impossibl/openai/gpt-4-turbo128K$10$30
impossibl/openai/gpt-4.11.0M$2$8
impossibl/openai/gpt-4.1-mini1.0M$0.40$2
impossibl/openai/gpt-4.1-nano1.0M$0.10$0.40
impossibl/openai/gpt-4o128K$3$10
impossibl/openai/gpt-4o-mini128K$0.15$0.60
impossibl/openai/gpt-5400K$1$10
impossibl/openai/gpt-5-codex400K$1$10
impossibl/openai/gpt-5-mini400K$0.25$2
impossibl/openai/gpt-5-nano400K$0.05$0.40
impossibl/openai/gpt-5-pro400K$15$120
impossibl/openai/gpt-5.1400K$1$10
impossibl/openai/gpt-5.1-codex400K$1$10
impossibl/openai/gpt-5.1-codex-mini400K$0.25$2
impossibl/openai/gpt-5.2400K$2$14
impossibl/openai/gpt-5.2-codex400K$2$14
impossibl/openai/gpt-5.3-codex400K$2$14
impossibl/openai/gpt-5.41.1M$3$15
impossibl/openai/gpt-5.4-mini400K$0.75$5
impossibl/openai/gpt-5.4-nano400K$0.20$1
impossibl/openai/gpt-5.4-pro1.1M$30$180
impossibl/openai/gpt-5.51.1M$5$30
impossibl/openai/gpt-5.5-pro1.1M$30$180
impossibl/openai/gpt-5.6-luna1.1M$0.20$1
impossibl/openai/gpt-5.6-sol1.1M$5$30
impossibl/openai/gpt-5.6-terra1.1M$2$12
impossibl/openai/o1200K$15$60
impossibl/openai/o3200K$2$8
impossibl/openai/o3-mini200K$1$4
impossibl/openai/o4-mini200K$1$4
impossibl/qwen/qwen3.6-flash1.0M$0.25$2
impossibl/qwen/qwen3.7-max1.0M$3$8
impossibl/qwen/qwen3.7-plus1.0M$0.40$2
impossibl/qwen/qwen3.8-max-preview1.0M$3$8
impossibl/thinkingmachines/inkling66K$2$5
impossibl/xai/grok-4.20-0309-non-reasoning1.0M$1$3
impossibl/xai/grok-4.20-0309-reasoning1.0M$1$3
impossibl/xai/grok-4.31.0M$1$3
impossibl/xai/grok-4.5500K$2$6
impossibl/xai/grok-build-0.1256K$1$2
impossibl/xiaomi/mimo-v2.51.0M$0.14$0.28
impossibl/zai/glm-4.5131K$0.60$2
impossibl/zai/glm-4.5-air131K$0.20$1
impossibl/zai/glm-4.6205K$0.60$2
impossibl/zai/glm-4.7205K$0.60$2
impossibl/zai/glm-5205K$1$3
impossibl/zai/glm-5-turbo200K$1$4
impossibl/zai/glm-5.1200K$1$4
impossibl/zai/glm-5.21.0M$1$4
76 available models

進階設定
「進階設定」的直接連結

自訂標頭
「自訂標頭」的直接連結

src/mastra/agents/my-agent.ts
const agent = new Agent({
  id: 'custom-agent',
  name: 'custom-agent',
  model: {
    url: 'https://api.impossibl.com/v1',
    id: 'impossibl/anthropic/claude-fable-5',
    apiKey: process.env.IMPOSSIBL_API_KEY,
    headers: {
      'X-Custom-Header': 'value',
    },
  },
})

動態選擇模型
「動態選擇模型」的直接連結

src/mastra/agents/my-agent.ts
const agent = new Agent({
  id: 'dynamic-agent',
  name: 'Dynamic Agent',
  model: ({ requestContext }) => {
    const useAdvanced = requestContext.task === 'complex'
    return useAdvanced ? 'impossibl/zai/glm-5.2' : 'impossibl/anthropic/claude-fable-5'
  },
})
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