MiniMax M3.1 Flash

minimax/minimax-m3.1-flash-preview

MiniMax M3.1 Flash is the preview successor to M3, listed with a 1,000,000-token window and text, image and video input. The reference frames it around agentic tasks, coding and security work.

Input · Account credit
$0.30

per 1M tokens

Cash equivalent $0.03

Output · Account credit
$1.20

per 1M tokens

Cash equivalent $0.12

Context window
1,000,000

tokens · OpenRouter

Input → Output
Text · Image · Video→ Text
Model specifications
Sources reviewed: Y-API catalog snapshot:

Choosing this model

Selection advice by Y-API. The checks below are suggested evaluations, not published test results.

Where to start

Use it as a candidate for agent loops where each step is a small, checkable action — reading a file, running a command, summarising the result — and where a cheap retry is acceptable.

What to watch for

A preview ID can change or disappear without a deprecation cycle. Pin your evaluation to this exact model string, keep a fallback configured, and do not treat preview availability as a production guarantee.

Model specifications

These are OpenRouter model-level specifications, not a Y-API compatibility test. A particular route may accept fewer input formats, parameters or tokens. Verify the features you need with a small request; a successful text response does not validate vision or tool calling.

Context window
1,000,000 tokens
Input
Text · Image · Video
Output
Text
Listed on OpenRouter
Parameters listed by OpenRouter
include_reasoningmax_tokensreasoningreasoning_effortresponse_formattemperaturetool_choicetoolstop_p
OpenRouter model page & specifications

API pricing & cost estimate

Estimated credit consumed
$0.90
Estimated cash equivalent
$0.09

Illustrative token budget, not measured usage or a quote. Includes input and output; excludes separate media charges, cache discounts and retries. Include billed reasoning tokens in your output budget where applicable. Actual billing follows usage returned by the service.

$1 paid adds $10 of credit. Cash equivalent = credit consumed ÷ 10; this is not the model publisher’s list price.

Same token budget, different models
ModelEstimated credit consumedEstimated cash equivalent
MiniMax M3.1 Flash$0.90$0.09
MiniMax M3$0.90$0.09
GLM 5.3 Flash$0.40$0.04
View LLM API pricing & billing

API integration examples

These minimal, text-only requests use the exact Y-API model ID. They do not demonstrate image, audio, video, file or tool support. The output limit also needs room for reasoning; an empty answer with finish_reason=length can mean the budget was exhausted.

A task to try

You have a shell and a failing test. Describe the first three commands you would run, what you expect each to tell you, and what would make you stop and ask instead of continuing.

Set the TOKEN environment variable to a key from your console. Run this on your server or locally; never expose a key in browser code or a public repository.

cURL · MiniMax M3.1 Flash
curl --fail-with-body --silent --show-error --max-time 120 \
  'https://api.y-api.bestvirtualgoods.com/v1/chat/completions' \
  -H "Authorization: Bearer ${TOKEN:?Set TOKEN first}" \
  -H 'Content-Type: application/json' \
  --data-binary @- <<'JSON'
{
  "model": "minimax/minimax-m3.1-flash-preview",
  "messages": [
    {
      "role": "user",
      "content": "You have a shell and a failing test. Describe the first three commands you would run, what you expect each to tell you, and what would make you stop and ask instead of continuing."
    }
  ],
  "max_tokens": 4096
}
JSON

How to evaluate the result

Look for commands whose output would actually change the next step. A plan that runs the same command three times, or that asks for information already in the prompt, has not planned anything.

Before you choose

Why does this page point at a `:free` OpenRouter listing?

OpenRouter lists only the free variant of this checkpoint, so the specification link goes there. The model ID you call on Y-API is the one shown above, and its price comes from this catalog, not from that listing.

Sources & scope

Technical facts come from the cited model page and, where available, its linked publisher card. A card describes that checkpoint; it is not proof of the weights a gateway serves. Prices come only from the Y-API catalog. We do not claim measured latency, uptime or benchmark scores for this endpoint.