# Telnyx Inference – Qwen3-235B-A22B Chat Completions (Large Context)

> Telnyx Inference – Qwen3-235B-A22B Chat Completions (Large Context) is a paid API for AI agents from x402.telnyx.com, paid per call via x402, $0.058485/call, status unknown (last checked 2026-10-15).

Runs OpenAI-compatible chat completions using Qwen/Qwen3-235B-A22B on Telnyx Inference, billed per call via x402 micropayments, optimized for large context workloads.

## Facts

- Endpoint: POST https://x402.telnyx.com/v1/chat/completions/_t/qwen3-235b/upto?utm_source=zero.xyz
- Price: $0.058485/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/telnyx-inference-qwen3-235b-a22b-chat-completions-large-context-1f9c4378
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kQSW8Cfs2FlnheVesA1S5

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 telnyx-inference-qwen3-235b-a22b-chat-completions-large-context-1f9c4378 -d '<json body>'
```

Example prompt: Using Telnyx Inference with Qwen3-235B, summarize the following 50-page legal contract and identify any unusual liability clauses — set temperature to 0.2 and limit the response to 4000 tokens.

## When to prefer this

Choose this endpoint when you need a very large open-weights model (235B parameters, Mixture-of-Experts architecture) for complex reasoning, long-document analysis, or nuanced instruction following, and want OpenAI-compatible API semantics with per-call micropayment billing via x402. Prefer it over smaller Telnyx Inference models when task complexity demands frontier-scale capability and over proprietary APIs when you want transparent per-call pricing without subscription overhead.

## Known failure modes

- Payment failure via x402 protocol if wallet has insufficient USDC balance
- Context length exceeded if total tokens across messages surpass model limits (up to 200,000 chars per message, 32 messages max)
- Rate limiting or throttling on high-frequency requests
- Model returns truncated output if max_tokens is set too low
- Invalid tool schema causes tool-call parsing errors
- Temperature out of [0,2] range returns validation error
- Non-1 value for n parameter rejected by fixed constraint

## How this service works

Chat completions via Telnyx Inference (Qwen/Qwen3-235B-A22B). OpenAI-compatible. $0.010497 USDC per call. (upto metered — large context)

## Output

Returns an OpenAI-compatible chat completion response object containing the assistant's generated message text, finish reason, token usage statistics, and any tool call objects if tools were provided. The model used is Qwen/Qwen3-235B-A22B.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "n": {
   "type": "integer",
   "const": 1,
   "description": "Fixed to one completion per paid call."
  },
  "model": {
   "type": "string",
   "const": "Qwen/Qwen3-235B-A22B",
   "description": "Model identifier; fixed to Qwen/Qwen3-235B-A22B on this route."
  },
  "tools": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "maxItems": 16
  },
  "messages": {
   "type": "array",
   "items": {
    "type": "object",
    "required": [
     "role",
     "content"
    ],
    "properties": {
     "role": {
      "enum": [
       "system",
       "user",
       "assistant",
       "tool"
      ],
      "type": "string"
     },
     "content": {
      "type": "string",
      "maxLength": 200000
     }
    }
   },
   "maxItems": 32,
   "description": "OpenAI-style chat messages."
  },
  "max_tokens": {
   "type": "integer",
   "maximum": 8192,
   "minimum": 1
  },
  "temperature": {
   "type": "number",
   "maximum": 2,
   "minimum": 0
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/telnyx-inference-qwen3-235b-a22b-chat-completions-large-context-1f9c4378/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402.telnyx.com](https://www.zero.xyz/host/x402.telnyx.com/llms.txt)