Telnyx x402 Gateway – Llama 3.3 70B Chat Completions

x402

Telnyx x402 Gateway – Llama 3.3 70B Chat Completions is a paid API for AI agents from x402.telnyx.com, paid per call via x402, $0.007016/call, status unknown (last checked 2026-10-10).

Runs OpenAI-compatible chat completions against Meta's Llama-3.3-70B-Instruct model, billed per-request in USDC via the x402 payment protocol.

Price / call$0.007016

Seller volume →—

Success—

StatusUnknown

How this service works

Pay USDC per request for Telnyx Inference and Audio (text-to-speech, speech-to-text) through x402.

Output

Returns an OpenAI-compatible chat.completion JSON object containing the assistant's reply message, finish reason (e.g. 'stop'), and token usage breakdown (prompt, completion, total tokens). The completion ID and object type are also included for logging.

Example use cases

Pay-per-call AI coding assistant

“Use Llama 3.3 70B to review this Python function and suggest improvements — I want to pay just for this one call in USDC rather than sign up for a subscription: [paste code here].”

Tool-calling agent reasoning step

“Send the following conversation thread to Llama 3.3 70B with the search_web tool attached and let it decide whether to call the tool or answer directly — bill it to my USDC wallet: [paste messages].”

On-demand customer email drafting

“Have Llama 3.3 70B write a polite, empathetic reply to this customer complaint email, keeping the response under 150 words — run it as a one-off USDC-billed inference: [paste email].”

Technical details

Endpoint

POSThttps://x402.telnyx.com/v1/chat/completions/_t/llama-3.3-70b?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a capable 70B-parameter open-weight LLM (Llama 3.3) with OpenAI-compatible chat format, want pay-per-request billing in USDC without a monthly subscription, and are operating in an agentic or automated context where x402 micropayment headers can be attached. Prefer it over subscription-based LLM APIs for sporadic or burstable workloads, or when crypto-native payment rails are required. Also suitable when you need tool-calling support (up to 16 tools) at a predictable per-call cost.

Side effects

Payment not attached or insufficient USDC balance — 402 Payment Required
messages array exceeds 32 items or content exceeds 8000 characters — 400 validation error
max_tokens out of range [1–1024] — 400 validation error
Model identifier mismatch (must be meta-llama/Llama-3.3-70B-Instruct) — 400 error
Telnyx inference backend timeout or overload — 503 or 504
Malformed message role (must be system/user/assistant/tool) — 400 validation error

Input

Schema · Request body

Field	Type	Description
n	integer	Fixed to one completion per paid call.
model	string	Model identifier; fixed to meta-llama/Llama-3.3-70B-Instruct on this route.
tools	array
messages	array	OpenAI-style chat messages.
max_tokens	integer
temperature	number

Output

Schema · Response

{
  "type": "json",
  "example": {
    "id": "chatcmpl-xxx",
    "usage": {
      "total_tokens": 16,
      "prompt_tokens": 12,
      "completion_tokens": 4
    },
    "object": "chat.completion",
    "choices": [
      {
        "index": 0,
        "message": {
          "role": "assistant",
          "content": "Hello!"
        },
        "finish_reason": "stop"
      }
    ]
  }
}

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