# AgentRXI Large LLM (Llama 3.3 70B)

> AgentRXI Large LLM (Llama 3.3 70B) is a paid API for AI agents from agentrxi.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-15).

Pay-per-call LLM chat completion using Llama 3.3 70B for harder reasoning tasks, with no API key required and a flat $0.02 USDC per request price.

## Facts

- Endpoint: GET https://agentrxi.com/v1/llm/large?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentrxi-large-llm-llama-3-3-70b-2efbbf15
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__jRJC-ksPqN_TjCHWHjDf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability agentrxi-large-llm-llama-3-3-70b-2efbbf15
```

Example prompt: Use the large Llama 3.3 70B model to answer this question with detailed reasoning: 'What are the key trade-offs between microservices and monolithic architectures, and when should a startup choose each?' Keep the response under 2000 tokens.

## When to prefer this

Choose this endpoint when you need a more powerful, larger-context reasoning model than a smaller LLM can provide, and you want to pay per-call without setting up API credentials or subscriptions. It is ideal for one-off hard reasoning tasks, complex multi-step questions, or when you want Llama 3.3 70B quality without committing to a full LLM provider account.

## Known failure modes

- Payment not processed — request fails if $0.02 USDC is not paid via x402
- Prompt missing — request fails if the required 'prompt' query parameter is absent
- Output token limit exceeded — model may truncate at 2000 tokens
- High-latency or timeout on very long prompts
- Model hallucination or low-quality output for highly specialized domains

## How this service works

Pay-per-call LLM chat completion on Llama 3.3 70B for harder reasoning, no API key. Same OpenAI-style messages body as /v1/llm. Flat price per request, up to 2k output tokens. Also callable as GET with the same fields as query parameters.

## Output

Returns a chat completion response in OpenAI-compatible format containing the model's generated text, up to 2000 output tokens, produced by the Llama 3.3 70B model.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "prompt"
     ],
     "properties": {
      "prompt": {
       "type": "string",
       "description": "User message"
      },
      "system": {
       "type": "string",
       "description": "Optional system message"
      },
      "max_tokens": {
       "type": "integer"
      },
      "temperature": {
       "type": "number"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentrxi-large-llm-llama-3-3-70b-2efbbf15/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentrxi.com](https://www.zero.xyz/host/agentrxi.com/llms.txt)