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Telnyx Inference – DeepSeek-V4-Flash-0731 Chat Completions (Large Context, Metered)
x402
Telnyx Inference – DeepSeek-V4-Flash-0731 Chat Completions (Large Context, Metered) is a paid API for AI agents from x402.telnyx.com, paid per call via x402, $0.041977/call, status unknown (last checked 2026-10-15).
Runs OpenAI-compatible chat completions using DeepSeek-V4-Flash-0731 on Telnyx's inference infrastructure, billed per call for large/metered context usage
Price / call$0.041977
Success—
StatusUnknown
How this service works
Chat completions via Telnyx Inference (deepseek-ai/DeepSeek-V4-Flash-0731). OpenAI-compatible. $0.005214 USDC per call. (upto metered — large context)
Output
Returns an OpenAI-compatible chat completion response containing the assistant's generated message, finish reason, token usage counts, and optionally tool call objects if tools were provided in the request.
Example use cases
Automated customer support reply drafting
“Use DeepSeek-V4-Flash on Telnyx to draft a reply to this customer complaint — system prompt: 'You are a polite customer service agent', user message: 'My order arrived broken and I need a refund immediately.' Keep the response under 200 tokens.”
Code explanation for developer tooling
“Ask DeepSeek-V4-Flash-0731 via Telnyx to explain what this Python function does — system: 'You are an expert software engineer', user: 'Explain this code: def fib(n): return n if n<=1 else fib(n-1)+fib(n-2)'. Max 300 tokens, temperature 0.”
Tool-calling agent for structured data extraction
“Send a chat request to DeepSeek-V4-Flash on Telnyx with a tool definition for extracting name, date, and amount from invoices, and the user message: 'Invoice #4421 from Acme Corp dated 2025-06-15 for $1,340.00' — use temperature 0 and max 512 tokens.”
Technical details
Endpoint
POSThttps://x402.telnyx.com/v1/chat/completions/_t/deepseek-v4-flash-0731/upto?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a fast, cost-effective OpenAI-compatible chat completion using DeepSeek-V4-Flash-0731 with support for large context inputs (up to 900K characters per message), tool/function calling with up to 16 tools, and pay-per-call USDC billing via x402 — especially when running agentic workflows that require metered, unpredictable usage volumes without subscription commitments.
Side effects
- Payment failure if x402 USDC payment is rejected or insufficient — returns 402 Payment Required
- Context length exceeded if messages exceed 900,000 characters — request is rejected
- Invalid model identifier if model field is changed from the fixed value — returns 422 or 400
- Rate limiting or capacity errors — returns 429 or 503
- Malformed messages array (missing role or content) — returns 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 deepseek-ai/DeepSeek-V4-Flash-0731 on this route. |
| tools | array | |
| messages | array | OpenAI-style chat messages. |
| max_tokens | integer | |
| temperature | number |
Tags
x402
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