Index onlineMerchant portal
Api Endpoint

LLM token counter | Vextorium

Count the tokens of a text with OpenAI tokenizers (o200k for GPT-4o/4.1/5, cl100k for GPT-4/3.5) plus estimates for Claude, Llama and Gemini, with characters per token. Budget LLM calls and split contexts.

Open interactive test console

Offering

Provider
api.vextorium.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
General Utilities
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.vextorium.com/v1/llm-token-count
MIME type
application/json
First seen
2026-10-16T01:51:10.599Z
Last seen
Tags
tokens, LLM, tiktoken, cost, context

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.003 USDC
Atomic price: 3000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.003 USDC
Atomic price: 3000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 3
2310 atomic units
Atomic price: 2310 · Network: xrpl:0 · Asset: XRP · Scheme: exact
Payment option 4
0.003 USDC
Atomic price: 3000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 5
0.003 USDC
Atomic price: 3000 · Network: eip155:10 · Asset: USDC · Scheme: exact
Payment option 6
3000 atomic units
Atomic price: 3000 · Network: eip155:5042 · Asset: 0x3600000000000000000000000000000000000000 · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "3000",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "3000",
    "payTo": "HcjfmZLgWRZzwj4deEiS7pewc4KBYSw39mW5nTyt3pz2"
  },
  {
    "scheme": "exact",
    "network": "xrpl:0",
    "asset": "XRP",
    "amount": "2310",
    "payTo": "rEac5rTEr7y81iEyrMTrHCRbnktSE2pNCp"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "3000",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf"
  },
  {
    "scheme": "exact",
    "network": "eip155:10",
    "asset": "0x0b2C639c533813f4Aa9D7837CAf62653d097Ff85",
    "amount": "3000",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf"
  },
  {
    "scheme": "exact",
    "network": "eip155:5042",
    "asset": "0x3600000000000000000000000000000000000000",
    "amount": "3000",
    "payTo": "0xb9f06D2734B7E9D7b21B64C4D8b95bd774b71aCf"
  }
]

Observed health

Status
Healthy
Latest latency
384 ms
Average latency
712 ms
HTTP status
200
Last checked
Reachability
100% over 8 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "properties": {
        "text": {
          "type": "string"
        },
        "model": {
          "type": "string",
          "enum": [
            "o200k_base",
            "cl100k_base"
          ]
        }
      },
      "required": [
        "text"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": [
        "object",
        "null"
      ],
      "properties": {
        "characters": {
          "type": [
            "number",
            "null"
          ]
        },
        "words": {
          "type": [
            "number",
            "null"
          ]
        },
        "tokens": {
          "type": [
            "number",
            "null"
          ]
        },
        "encoding": {
          "type": [
            "string",
            "null"
          ]
        },
        "tokens_other_encoding": {
          "type": [
            "object",
            "null"
          ],
          "properties": {
            "cl100k_base": {
              "type": [
                "number",
                "null"
              ]
            }
          }
        },
        "characters_per_token": {
          "type": [
            "number",
            "null"
          ]
        },
        "estimates": {
          "type": [
            "object",
            "null"
          ],
          "properties": {
            "claude_approx": {
              "type": [
                "number",
                "null"
              ]
            },
            "llama3_approx": {
              "type": [
                "number",
                "null"
              ]
            },
            "gemini_approx": {
              "type": [
                "number",
                "null"
              ]
            }
          }
        },
        "note": {
          "type": [
            "string",
            "null"
          ]
        }
      }
    }
  },
  "required": [
    "type"
  ]
}