ToolVet
16trust / 100

Llm Prices

by Vextorium in AI models & inference

x402 APIFailing, checked 3 h ago

Price per million input and output tokens of 300+ language models (OpenAI, Anthropic, Google, Meta, Mistral, DeepSeek...) via OpenRouter, with context window and the estimated cost of one call with your token counts; filter by name or provider, sort by price or context.

POST https://api.vextorium.com/v1/llm-prices

Last 30 days

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Status and outage history · Atom feed

Uptime
0.0%
Response time
- typical, - slowest 5%
Last check
3 h ago: Amount "0.002" is not in atomic token units
Next check
any minute now

How to call it

POST https://api.vextorium.com/v1/llm-prices

Each call costs $0.002 in USDC on Base, paid with the request over x402.

Run a free test callOne unpaid request, the way an agent sends it. You see the payment challenge it gets back. Nothing is charged.

Example request

From the listing.

POST https://api.vextorium.com/v1/llm-prices
content-type: application/json

{
  "limit": 2,
  "search": "claude"
}

Parameters

ParameterTypeRequiredDescription
input_tokensintegerNo
limitintegerNo
orderstringNo One of: price, expensive, context.
output_tokensintegerNo
searchstringNo

Example response

The provider's example. We can't check it without paying.

Example response, 36 lines
{
  "input_tokens": 1000,
  "models": [
    {
      "call_cost_usd": 0.00175,
      "context_tokens": 200000,
      "free": false,
      "input_usd_per_million": 0.5,
      "modalities": [
        "text",
        "image"
      ],
      "model": "anthropic/claude-haiku-4.5:batch",
      "name": "Anthropic: Claude Haiku 4.5 (batch)",
      "output_usd_per_million": 2.5
    },
    {
      "call_cost_usd": 0.0035,
      "context_tokens": 1000000,
      "free": false,
      "input_usd_per_million": 1,
      "modalities": [
        "text",
        "image"
      ],
      "model": "anthropic/claude-sonnet-5.5:batch",
      "name": "Anthropic: Claude Sonnet 5.5 (batch)",
      "output_usd_per_million": 5
    }
  ],
  "note": "OpenRouter prices; the direct provider may differ.",
  "output_tokens": 500,
  "search": "claude",
  "source": "OpenRouter (public model API prices)",
  "total": 33
}

Call it from code

The curl command shows the payment challenge. The JavaScript and Python versions pay and call, and never pay more than $0.002.

curl: see the payment challenge
# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i -X POST 'https://api.vextorium.com/v1/llm-prices' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":2,"search":"claude"}'

# 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 - -X POST 'https://api.vextorium.com/v1/llm-prices' \
  -H 'content-type: application/json' \
  --data-raw '{"limit":2,"search":"claude"}' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode
JavaScript: pay and call
// 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 $0.002 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.002" });
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 $0.002 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.vextorium.com%2Fv1%2Fllm-prices&method=POST
const res = await pay("https://api.vextorium.com/v1/llm-prices", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({
    "limit": 2,
    "search": "claude"
  }),
});
console.log(res.status, await res.text());
Python: pay and call
# 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 $0.002 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.002"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.post(
        "https://api.vextorium.com/v1/llm-prices",
        json={
            "limit": 2,
            "search": "claude",
        },
    )
    print(res.status_code, res.text)

Security scan

  • No findings. We scan names, descriptions and tool definitions for hidden instructions and other prompt-injection patterns.

Recent checks

WhenResultHTTPTimePrice
3 h agoAmount "0.002" is not in atomic token units402127 ms$0.002
8 h agoAmount "0.002" is not in atomic token units40281 ms$0.002
12 h agoAmount "0.002" is not in atomic token units40274 ms$0.002
17 h agoAmount "0.002" is not in atomic token units40279 ms$0.002
21 h agoAmount "0.002" is not in atomic token units402131 ms$0.002
26 h agoAmount "0.002" is not in atomic token units402334 ms$0.002
30 h agoAmount "0.002" is not in atomic token units40285 ms$0.002
34 h agoAmount "0.002" is not in atomic token units40281 ms$0.002
38 h agoAmount "0.002" is not in atomic token units40281 ms$0.002
42 h agoAmount "0.002" is not in atomic token units40288 ms$0.002
46 h agoAmount "0.002" is not in atomic token units402108 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40286 ms$0.002
2 days agoAmount "0.002" is not in atomic token units402105 ms$0.002
2 days agoAmount "0.002" is not in atomic token units40283 ms$0.002
3 days agoAmount "0.002" is not in atomic token units40277 ms$0.002