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Telnyx x402 Gateway – Kimi K2.5 Chat Completions
x402
Telnyx x402 Gateway – Kimi K2.5 Chat Completions is a paid API for AI agents from x402.telnyx.com, paid per call via x402, $0.016673/call, status unknown (last checked 2026-10-12).
Generate chat completions using the Moonshot AI Kimi-K2.5 model, paid per-request in USDC via the x402 payment protocol.
Price / call$0.016673
Success—
StatusUnknown
How this service works
Pay USDC per request for Telnyx Inference and Audio (text-to-speech, speech-to-text) through x402.
Output
An OpenAI-compatible chat completion JSON object containing the assistant's reply message, finish reason (e.g. 'stop'), token usage breakdown (prompt, completion, total tokens), a completion ID, and object type. The response includes exactly one choice (n=1 is fixed).
Example use cases
Agentic research assistant with tool use
“I want to query Kimi-K2.5 through Telnyx's x402 gateway with a system prompt of 'You are a research analyst' and a user message asking 'Summarize the key differences between transformer and state-space models in 200 words', using up to 800 tokens and temperature 0.5 — bill it in USDC per call.”
Pay-per-call code generation
“Ask Kimi-K2.5 via the Telnyx x402 gateway to write a Python function that parses ISO 8601 dates — system prompt: 'You are an expert Python developer', user message: 'Write a function to parse ISO 8601 date strings', max 1024 tokens, temperature 0.2.”
On-demand customer FAQ answering
“Send a chat to Kimi-K2.5 on the Telnyx x402 endpoint — system: 'You are a friendly customer support agent for a SaaS product', user: 'How do I reset my password?', max 256 tokens, temperature 0.8 — I want to pay per request in USDC without a monthly plan.”
Technical details
Endpoint
POSThttps://x402.telnyx.com/v1/chat/completions/_t/kimi-k2.5?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need Moonshot AI's Kimi-K2.5 model specifically and want to pay per-call in USDC without a monthly subscription or API key contract — ideal for agents operating with crypto wallets, serverless pipelines with variable load, or when you want OpenAI-compatible chat completion semantics with stablecoin micropayments. Prefer alternatives if you need streaming responses, more than 1024 output tokens, or a different model family.
Side effects
- Payment failure or insufficient USDC balance causes 402 response before inference runs
- Messages array exceeds 32 items or content exceeds 20,000 characters returns 400 validation error
- max_tokens out of range (< 1 or > 1024) causes schema validation failure
- Temperature outside 0–2 range returns parameter error
- Model identifier mismatch (only moonshotai/Kimi-K2.5 is accepted on this route)
- Network timeout during inference returns 504 or connection error
- More than 16 tools provided in the tools array causes a validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| n | integer | Fixed to one completion per paid call. |
| model | string | Model identifier; fixed to moonshotai/Kimi-K2.5 on this route. |
| tools | array | |
| messages | array | OpenAI-style chat messages. |
| max_tokens | integer | |
| temperature | number |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "chatcmpl-xxx",
"usage": {
"total_tokens": 16,
"prompt_tokens": 12,
"completion_tokens": 4
},
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hello!"
},
"finish_reason": "stop"
}
]
}
}Tags
x402
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