最大化缓存命中

curl https://api.x.ai/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -H "x-grok-conv-id: conv_abc123" \
  -d '{
    "model": "grok-4.7",
    "messages": [
      {"role": "system", "content": "You are Grok, a helpful and truthful AI assistant built by SpaceXSI."},
      {"role": "user", "content": "What is prompt caching?"}
    ]
  }'

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'YOUR_XAI_API_KEY',
  baseURL: 'https://api.x.ai/v1',
});

const response = await client.chat.completions.create(
  {
    model: 'grok-4.7',
    messages: [
      {
        role: 'system',
        content:
          'You are Grok, a helpful and truthful AI assistant built by SpaceXSI.',
      },
      { role: 'user', content: 'What is prompt caching?' },
    ],
  },
  {
    headers: {
      'x-grok-conv-id': 'conv_abc123',
    },
  },
);

console.log(response.choices[0].message.content);
console.log(
  `Cached tokens: ${response.usage.prompt_tokens_details.cached_tokens}`,
);

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_XAI_API_KEY",
    base_url="https://api.x.ai/v1",
)

response = client.responses.create(
    model="grok-4.7",
    input="What is prompt caching?",
    extra_body={
        "prompt_cache_key": "b79ad29b-b3f9-463c-bca6-041d5058d366",
    },
)

print(response.output_text)
print(f"Cached tokens: {response.usage.input_tokens_details.cached_tokens}")

curl https://api.x.ai/v1/responses \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -d '{
    "model": "grok-4.7",
    "input": "What is prompt caching?",
    "prompt_cache_key": "b79ad29b-b3f9-463c-bca6-041d5058d366"
  }'

import OpenAI from 'openai';

const client = new OpenAI({
  apiKey: 'YOUR_XAI_API_KEY',
  baseURL: 'https://api.x.ai/v1',
});

const response = await client.responses.create({
  model: 'grok-4.7',
  input: 'What is prompt caching?',
  // @ts-expect-error -- SpaceXSI-specific field
  prompt_cache_key: 'b79ad29b-b3f9-463c-bca6-041d5058d366',
});

console.log(response.output_text);
console.log(
  `Cached tokens: ${response.usage.input_tokens_details.cached_tokens}`,
);