# Agent Hub – Llama 3.3 70B Large LLM Chat Completion

> Agent Hub – Llama 3.3 70B Large LLM Chat Completion is a paid API for AI agents from agents.torbrooknews.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Pay-per-call LLM chat completion using Llama 3.3 70B for harder reasoning tasks, callable via GET with prompt/system/temperature parameters, no API key required.

## Facts

- Endpoint: GET https://agents.torbrooknews.com/v1/llm/large?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agent-hub-llama-3-3-70b-large-llm-chat-completion-57c6669e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_f_Rpg0w-oQvVCxh4XTgms

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 agent-hub-llama-3-3-70b-large-llm-chat-completion-57c6669e
```

Example prompt: Ask the large Llama 3.3 70B model: 'Explain the key differences between transformer and state-space model architectures for sequence modeling, and when you'd prefer each one.' Use a temperature of 0.3 and up to 1500 output tokens.

## When to prefer this

Choose this endpoint over smaller or cheaper LLM endpoints when the task requires deeper multi-step reasoning, nuanced synthesis, or higher output quality that a smaller model cannot reliably provide. Prefer it over the sibling small-model endpoint when accuracy matters more than cost, and over hosted OpenAI/Anthropic APIs when you want no API key setup and flat pay-per-call pricing via x402.

## Known failure modes

- Missing required 'prompt' query parameter returns an error
- Payment not included or failed results in 402 Payment Required
- Prompt or system message exceeds context window limits causing truncation or error
- max_tokens set above the 2000-token ceiling may be capped or rejected
- Temperature outside valid range may cause a validation error
- Server-side model unavailability or timeout on long reasoning chains

## 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 an LLM-generated text completion from the Llama 3.3 70B model, structured in the OpenAI-compatible chat completion format, containing the model's response to the given prompt up to 2000 output tokens.

## 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/agent-hub-llama-3-3-70b-large-llm-chat-completion-57c6669e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.torbrooknews.com](https://www.zero.xyz/host/agents.torbrooknews.com/llms.txt)