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AgentRXI Large (Llama 3.3 70B) Chat Completions
x402
AgentRXI Large (Llama 3.3 70B) Chat Completions is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.008939/call, status unknown (last checked 2026-10-15).
OpenAI-compatible chat completions via Meta Llama 3.3 70B with tool calling and streaming, billed per token via x402 micropayments
Price / call$0.008939
Success—
StatusUnknown
How this service works
OpenAI-compatible chat completions on Meta Llama 3.3 70B, strong general chat with tool calling. Set your OpenAI SDK base URL to https://agentrxi.com/v1/large and pay per token with x402 instead of an API key: $0.879 per million input and $6.759 per million output tokens, minimum $0.002 a call, at most $0.0219. The 402 quotes your request's maximum; "upto" payers are charged only the tokens used. Same request/response shape as OpenAI (tool calling, streaming supported), up to
Output
Returns an OpenAI-format chat.completion JSON object containing the assistant's message (or tool call), finish reason, model name, and token usage breakdown (prompt, completion, total tokens). Streaming is supported for incremental response delivery.
Example use cases
Agentic tool-calling workflow
“I need you to use the Llama 3.3 70B endpoint to handle a multi-step task with tool calls — figure out today's weather in Tokyo and then summarize what clothes I should pack, using up to 300 output tokens.”
Complex reasoning on a budget
“Ask the Llama 70B model to reason through this logic puzzle step by step with a temperature of 0.2 and cap it at 400 tokens: 'If all bloops are razzles and all razzles are lazzles, are all bloops definitely lazzles?'”
Creative writing generation
“Have the large Llama model write a short sci-fi story opening paragraph about a Mars colony in 2150, keep it under 200 tokens and use a temperature of 0.9 for creativity.”
Technical details
Endpoint
GEThttps://agentrxi.com/v1/large/chat/completions?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a powerful 70B-class open-source model (Llama 3.3) with OpenAI SDK compatibility, tool calling, and streaming, without committing to a monthly API key subscription — especially suited for pay-per-use agentic workflows billed via x402 micropayments. Prefer over smaller sibling models (e.g. Qwen Coder 32B) when the task requires strong general reasoning, instruction following, or complex multi-turn dialogue.
Side effects
- Insufficient x402 payment balance causes 402 Payment Required before completion
- max_tokens limit reached returns finish_reason: length instead of stop
- Network timeout on long completions with large max_tokens values
- Malformed prompt or missing required fields returns 400 Bad Request
- Tool calling schema errors may result in garbled or empty tool_calls array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "chatcmpl-...",
"model": "llama-3.3-70b",
"usage": {
"total_tokens": 18,
"prompt_tokens": 14,
"completion_tokens": 4
},
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Bonjour !"
},
"finish_reason": "stop"
}
]
}
}Tags
x402
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