MiniMaxText Generation/v1/ai/chat

MiniMax M3.1 Flash API

Access MiniMax M3.1 Flash through one API key. MiniMax Fast Multimodal Agent Model.

MiniMax M3.1 Flash is a multimodal model from MiniMax that improves on MiniMax M3, particularly in complex agentic tasks, coding and cybersecurity. It suits cost-sensitive agents and coding assistants that need text, image and video input at a low per-token price.

Full Docs Get API Key — Free $5 Credit

No credit card required. Takes 30 seconds.

MiniMax M3.1 Flash API pricing

Pay per request from your YepAPI balance — no subscription, no monthly minimum. Prices updated October 23, 2026.

Token type	Price
Input	$0.22 / 1M tokens
Output	$0.89 / 1M tokens
Context window	1.0M tokens

What it costs	Per job	Per 1,000
Chat reply1K input + 500 output tokens	$0.0007	$0.665
RAG answer8K input + 800 output tokens	$0.0025	$2.47
Agent step with tools30K input + 2K output tokens	$0.0084	$8.38
Long document summary100K input + 2K output tokens	$0.024	$23.78

2,400+

Developers

1.2M+

API calls served

100+

Endpoints

$0.01

Per call

Yep, that's it.

Try it live

Send a message and see MiniMax M3.1 Flash respond in real time.

POST/v1/ai/chatminimax/minimax-m3.1-flash

Message *

Max Tokens

Maximum tokens in the response.

Stream

Real-time tokens

Hit "Send Request" to see the response

MiniMax M3.1 Flash specs

Provider	MiniMax
Model ID	minimax/minimax-m3.1-flash
Endpoint	/v1/ai/chat
Type	Text Generation
Context window	1.05M tokens
Max output	524K tokens
Reasoning	No
OpenAI-compatible	Yes — /v1/ai/chat/completions

How to get a MiniMax M3.1 Flash API key

1
Create a free account
Sign up at yepapi.com with Google or email. It takes about 30 seconds and needs no card.
2
Create an API key
Open the dashboard, go to API Keys and create a key. Copy it — it starts with yep_sk_.
3
Call MiniMax M3.1 Flash
Send a request to /v1/ai/chat with the x-api-key header and model "minimax/minimax-m3.1-flash".
4
Pay as you go
Usage is billed per request from your balance. Top up any amount; there is no subscription.

Strengths

✓

Improves on M3

Better than MiniMax M3 on agentic tasks, coding and cybersecurity.

✓

Low cost

$0.22 per 1M input and $0.89 per 1M output tokens.

✓

1M token context

Up to 1,048,576 input tokens and 524,288 output tokens per call.

✓

Multimodal input

Accepts text, images and video.

Quick start

Copy this snippet and start making calls with MiniMax M3.1 Flash.

const res = await fetch('https://api.yepapi.com/v1/ai/chat', {
  method: 'POST',
  headers: {
    'x-api-key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "model": "minimax/minimax-m3.1-flash",
    "messages": [
      {
        "role": "user",
        "content": "Explain API gateways in 2 sentences."
      }
    ],
    "maxTokens": 256
  }),
});
const { data } = await res.json();
console.log(data.message.content);

MiniMax M3.1 Flash vs similar models

Every model below runs on the same API key — switch by changing the model ID.

Model	Provider	Price	Context
MiniMax M3.1 Flash	MiniMax	$0.22 in / $0.89 out per 1M	1.0M
MiniMax M2.5	MiniMax	$0.40 in / $1.40 out per 1M	205K
MiniMax M3	MiniMax	$0.44 in / $1.77 out per 1M	1.0M
MiniMax M2.7	MiniMax	$0.44 in / $1.77 out per 1M	205K
Nemotron 3 Super	NVIDIA	$0 in / $0 out per 1M	262K
Qwen3.7 Flash	Qwen	$0.04 in / $0.19 out per 1M	1M
Solar Mini 4	Upstage	$0.07 in / $0.30 out per 1M	524K
Nemotron 3.5 Lightning	NVIDIA	$0.10 in / $0.30 out per 1M	262K

Why use MiniMax M3.1 Flash through YepAPI?

✓One API key for all models — no separate accounts

✓OpenAI SDK compatible — just change the base URL

✓No monthly minimums — pay per token

✓Switch models with one line of code

✓Full provider passthrough — citations, search results, and all extras included

✓Streaming and non-streaming support on every model

✓Works with Cursor, Claude, LangChain, and any LLM tool

✓Unified billing across all providers

MiniMax M3.1 Flash API — pricing, context window & access

MiniMax M3.1 Flash is a multimodal model from MiniMax that improves on MiniMax M3, particularly in complex agentic tasks, coding and cybersecurity. It pairs a 1,048,576-token context window with up to 524,288 output tokens per response, at $0.22 per 1M input and $0.89 per 1M output tokens through YepAPI.

Through YepAPI you call MiniMax M3.1 Flash on an OpenAI-compatible endpoint with a single key — the same key that reaches GPT-6, Claude, Gemini, Grok and the SEO, SERP and scraping APIs. Input: text, images, video.

What is MiniMax M3.1 Flash?

MiniMax M3.1 Flash is a multimodal model from MiniMax that improves on MiniMax M3, particularly in complex agentic tasks, coding and cybersecurity. It is the fast, low-cost member of the M3.1 line, with a 1M-token context window. It accepts text, images, video as input, handles up to 1,048,576 tokens of context and returns up to 524,288 output tokens per call.

Build with MiniMax M3.1 Flash via YepAPI

YepAPI serves MiniMax M3.1 Flash on the OpenAI-compatible /v1/ai/chat endpoint. Point your base URL at YepAPI, add your key, and set the model string to minimax-m3.1-flash (or the full minimax/minimax-m3.1-flash). Function calling, structured outputs and reasoning settings pass straight through, and switching to any other model on the platform is a one-string change per request.

MiniMax M3.1 Flash API pricing — $0.22 / 1M input, $0.89 / 1M output

MiniMax M3.1 Flash costs $0.22 per 1M input tokens and $0.89 per 1M output tokens through YepAPI, pay per token with no minimums. Failed calls are never charged, and every request is itemised in your dashboard API Logs.

MiniMax M3.1 Flash use cases

It suits cost-sensitive agents and coding assistants that need text, image and video input at a low per-token price.

Try MiniMax M3.1 Flash free

Every new YepAPI account includes $5 in free credit with no card required — enough to test MiniMax M3.1 Flash on your own prompts before committing to paid usage. Create an account, copy your key, and call minimax-m3.1-flash right away.

Start generating in 30 seconds

$5 free credit on signup. No credit card required. Pay per call.

Get API Key

What developers say

“Switched from SerpAPI and cut our SERP costs by 80%. Same data quality, way simpler billing.”
Marcus T.
SEO Platform Founder

“One API key for AI models, SERP data, and web scraping. Saved us from managing 4 separate providers.”
Priya S.
Full-Stack Developer

“The $5 free credit let us prototype our entire rank tracking feature before committing. No other API does that.”
Jake R.
Indie Hacker

Frequently asked questions

MiniMax M3.1 Flash costs $0.22 per 1M input tokens and $0.89 per 1M output tokens through YepAPI, billed per request with no monthly fee. For example, a chat reply (1K input + 500 output tokens) costs about $0.0007.

Sign up at yepapi.com (Google or email, about 30 seconds), open the dashboard and create an API key. The same key works for MiniMax M3.1 Flash and every other model — no separate MiniMax account or waitlist.

New YepAPI accounts in most countries get free signup credit, enough to test MiniMax M3.1 Flash without a card. After that you pay per request at the rates above — there is no subscription.

Use "minimax/minimax-m3.1-flash" as the model on /v1/ai/chat. The short alias "minimax-m3.1-flash" also works.

Yes. Point the OpenAI SDK at https://api.yepapi.com/v1/ai with your YepAPI key and set model to "minimax/minimax-m3.1-flash". Streaming works the same way, so existing OpenAI code only needs the base URL and key changed.

MiniMax M3.1 Flash supports a 1.0M token context window with up to 524K output tokens per request.