Inference Providers Arbitrage

{
  "billing": {
    "credits_charged": 1,
    "credits_remaining": 49
  },
  "capturedAt": "2026-05-24T12:00:00Z",
  "filter": {
    "family": "Meta",
    "min_savings_pct": 20
  },
  "matrix_last_updated": "2026-05-24",
  "models": [
    {
      "cheapest_paid": {
        "blendedPrice": 0.355,
        "provider": "DeepInfra"
      },
      "cheapest_with_tps": {
        "blendedPrice": 0.355,
        "outputTPS": 170,
        "provider": "DeepInfra"
      },
      "family": "Meta",
      "fastest_tps": {
        "outputTPS": 950,
        "provider": "Groq"
      },
      "free_tier_offers": [],
      "median_paid_blended": 0.385,
      "modelId": "llama-4-scout",
      "modelName": "Llama 4 Scout",
      "most_expensive_paid": {
        "blendedPrice": 0.425,
        "provider": "Replicate"
      },
      "offer_count_paid": 6,
      "paramsB": 109,
      "savings_pct": 16.47,
      "spread_usd": 0.07
    }
  ],
  "models_in_matrix": 3,
  "ok": true,
  "provider_rollup": [
    {
      "appearances_paid": 5,
      "cheapest_count": 3,
      "free_tier_count": 0,
      "provider": "DeepInfra",
      "top_tps_count": 0,
      "value_score": 100
    },
    {
      "appearances_paid": 3,
      "cheapest_count": 0,
      "free_tier_count": 0,
      "provider": "Groq",
      "top_tps_count": 2,
      "value_score": 33
    }
  ],
  "top_arbitrage": [],
  "tracked_providers": [
    "Together AI",
    "Fireworks",
    "DeepInfra",
    "Groq",
    "OpenRouter",
    "Replicate",
    "Anyscale",
    "DeepSeek",
    "GitHub Models"
  ]
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://tensorfeed.ai/api/premium/inference-providers/arbitrage?family=Meta&min_savings_pct=20'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://tensorfeed.ai/api/premium/inference-providers/arbitrage?family=Meta&min_savings_pct=20' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Ftensorfeed.ai%2Fapi%2Fpremium%2Finference-providers%2Farbitrage
const res = await pay("https://tensorfeed.ai/api/premium/inference-providers/arbitrage?family=Meta&min_savings_pct=20");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://tensorfeed.ai/api/premium/inference-providers/arbitrage?family=Meta&min_savings_pct=20")
    print(res.status_code, res.text)