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MiniMax: MiniMax M3.1 Flash vs MoonshotAI: Kimi K3.1 Pro

A side-by-side comparison of MiniMax: MiniMax M3.1 Flash ($0.52 / 1M tokens) and MoonshotAI: Kimi K3.1 Pro ($7.00 / 1M tokens) using current USD prices and capabilities from the api14 catalog. Both run through the same OpenAI-compatible API.

Specifications

MiniMax: MiniMax M3.1 FlashMoonshotAI: Kimi K3.1 Pro
ProviderMiniMaxMoonshot AI
Input$0.52 / 1M tokens$7.00 / 1M tokens
Output$2.10 / 1M tokens$35.00 / 1M tokens
Cache read$0.05 / 1M tokens$0.70 / 1M tokens
Context window1,048,5761,048,576
Max output524,288943,718
Inputtext, image, videotext, image, video
Outputtexttext
Tool calling
Structured output
Reasoning control
AddedOct 19, 2026Oct 23, 2026

Key differences

  • MiniMax: MiniMax M3.1 Flash is 93% cheaper on input tokens.
  • MiniMax: MiniMax M3.1 Flash is 94% cheaper on output tokens.
  • A request with 1,000 input and 500 output tokens costs $0.00158 with MiniMax: MiniMax M3.1 Flash and $0.02 with MoonshotAI: Kimi K3.1 Pro.

Switch with one string

Both models use the same endpoint and request shape. Change the model value from "minimax/minimax-m3.1-flash" to "moonshotai/kimi-k3.1-pro" and prompts, streaming and tools keep working.

MiniMax: MiniMax M3.1 Flash details & playground →MoonshotAI: Kimi K3.1 Pro details & playground →
import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://api14.com/api/v1",
  apiKey: process.env.API14_API_KEY,
});

const result = await client.chat.completions.create({
  "model": "moonshotai/kimi-k3.1-pro",
  "messages": [
    {
      "role": "user",
      "content": "Explain vector databases in two sentences."
    }
  ]
});
console.log(result.choices[0].message.content);

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