# MiMo-V2.6-Flash LLM Inference (x402engine)

> MiMo-V2.6-Flash LLM Inference (x402engine) is a paid API for AI agents from x402engine.app, paid per call via x402, $0.002389/call, status unknown (last checked 2026-10-12).

Run Xiaomi's MiMo-V2.6-Flash 309B Mixture-of-Experts language model via pay-per-call HTTP 402 micropayments, returning OpenAI-compatible chat completions.

## Facts

- Endpoint: POST https://x402engine.app/api/llm/mimo-v2.6-flash?utm_source=zero.xyz
- Price: $0.002389/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mimo-v2-6-flash-llm-inference-x402engine-ef2a83a1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oPRd7yuGLJ2-dxkwl8x8J

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 mimo-v2-6-flash-llm-inference-x402engine-ef2a83a1 -d '<json body>'
```

Example prompt: Ask MiMo-V2.6-Flash: 'You are a helpful assistant.' Then send the user message 'Explain the difference between transformers and mixture-of-experts architectures in plain English' and stream back the response.

## When to prefer this

Choose this endpoint when you need a large, capable open-source MoE model (309B total, 15B active per token) with OpenAI-compatible chat completion API, tool-calling support, and pay-per-call micropayment billing — ideal for agents that want to avoid subscription lock-in, need cost transparency per inference, or want to experiment with Xiaomi's MiMo architecture specifically. Prefer over hosted OpenAI/Anthropic when per-call pricing and open-weight model provenance matter.

## Known failure modes

- Payment not settled — 402 response if USDC micropayment fails or wallet has insufficient funds
- Invalid messages array — 400 if required 'messages' field is missing or malformed
- Unsupported parameter — 400 if a sampling param (e.g. top_k) is not supported by the model
- Context length exceeded — model returns error if total token count exceeds context window
- Stream interruption — SSE connection dropped mid-generation if network times out
- Tool call schema mismatch — model may produce malformed tool_calls if function definitions are ambiguous

## How this service works

125 production APIs behind HTTP 402 micropayments. 87 LLMs, Kling V3 and Hailuo video generation, image generation, code execution, travel search, web scraping, TTS, and transaction simulation. Pay with USDC on Base, USDm on MegaETH, or USDC on Solana.

## Output

An OpenAI-compatible JSON response containing the model name ('xiaomi/mimo-v2.6-flash'), a choices array with the assistant's message (role, content, optional tool_calls, optional reasoning), finish_reason, and optionally logprobs. When streaming is enabled, returns SSE chunks in the same OpenAI format.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body",
    "method"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "messages"
     ],
     "properties": {
      "seed": {
       "type": "integer",
       "description": "Model-supported seed; see /docs/llm-capabilities.md."
      },
      "stop": {
       "oneOf": [
        {
         "type": "string"
        },
        {
         "type": "array",
         "items": {
          "type": "string"
         },
         "maxItems": 4
        }
       ],
       "description": "Model-supported stop; see /docs/llm-capabilities.md."
      },
      "min_p": {
       "type": "number",
       "description": "Model-supported min_p; see /docs/llm-capabilities.md."
      },
      "tools": {
       "type": "array",
       "items": {
        "type": "object",
        "required": [
         "function"
        ],
        "properties": {
         "type": {
          "enum": [
           "function"
          ],
          "type": "string"
         },
         "function": {
          "type": "object",
          "properties": {
           "name": {
            "type": "string"
           },
           "strict": {
            "type": "boolean"
           },
           "parameters": {
            "type": "object"
           },
           "description": {
            "type": "string"
           }
          }
         }
        }
       },
       "description": "Client-executed function definitions; return results using role=tool and tool_call_id."
      },
      "top_k": {
       "type": "integer",
       "description": "Model-supported top_k; see /docs/llm-capabilities.md."
      },
      "top_p": {
       "type": "number",
       "description": "Model-supported top_p; see /docs/llm-capabilities.md."
      },
      "stream": {
       "type": "boolean",
       "description": "Return live OpenAI-compatible SSE after payment settlement."
      },
      "logprobs": {
       "type": "boolean",
       "description": "Model-supported logprobs; see /docs/llm-capabilities.md."
      },
      "messages": {
       "type": "array",
       "items": {
        "type": "object",
        "anyOf": [
         {
          "required": [
           "content"
          ]
         },
         {
          "required": [
           "tool_calls"
          ]
    
… (truncated)
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "model": "xiaomi/mimo-v2.6-flash",
  "choices": [
   {
    "index": 0,
    "message": {
     "role": "assistant",
     "content": "Hello!"
    },
    "finish_reason": "stop"
   }
  ],
  "content": "Hello!"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mimo-v2-6-flash-llm-inference-x402engine-ef2a83a1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402engine.app](https://www.zero.xyz/host/x402engine.app/llms.txt)