Build on the Topo network.

curl https://api.topolabs.ai/v1/chat/completions \  -H "Authorization: Bearer $TOPO_API_KEY" \  -H "Content-Type: application/json" \  -d '{    "model": "claude-sonnet-5.5",    "messages": [{ "role": "user", "content": "Explain zk proofs in 3 lines" }],    "pay_with": "usdt"  }'

import osfrom openai import OpenAI client = OpenAI(    base_url="https://api.topolabs.ai/v1",    api_key=os.environ["TOPO_API_KEY"],) response = client.chat.completions.create(    model="claude-sonnet-5.5",    messages=[{"role": "user", "content": "Explain zk proofs in 3 lines"}],) print(response.choices[0].message.content)

import OpenAI from "openai"; const client = new OpenAI({  baseURL: "https://api.topolabs.ai/v1",  apiKey: process.env.TOPO_API_KEY,}); const response = await client.chat.completions.create({  model: "claude-sonnet-5.5",  messages: [{ role: "user", content: "Explain zk proofs in 3 lines" }],}); console.log(response.choices[0].message.content);

{  "id": "chatcmpl_7Hq2kf91",  "object": "chat.completion",  "created": 1792142596,  "model": "claude-sonnet-5.5",  "choices": [    {      "index": 0,      "message": {        "role": "assistant",        "content": "A zk proof shows a statement is true without revealing why. ..."      },      "finish_reason": "stop"    }  ],  "usage": { "prompt_tokens": 18, "completion_tokens": 406, "total_tokens": 424 },  "topo": {    "request_id": "req_7Hq2kf91",    "node": "eu-west-2",    "gpu": "B200",    "ttft_ms": 182,    "attestors": "3/3",    "receipt": {      "amount": "0.0041",      "currency": "USDT",      "chain": "base",      "tx": "0x51c4…9ab2"    }  }}