MiniMax H3 Image API

MiniMax's open-weight image model: native 4K up to 17 megapixels, and edits from up to 16 reference images

1K
KIE $0.0115 / image
Official≈$0.031263%–72% less
2K
KIE $0.0115 / image
Official≈$0.032865%–72% less
4K
KIE $0.03 / image
Official≈$0.078262%–69% less

MiniMax H3 Image API pricing per image

KIE charges a flat price per tier, about 40% of MiniMax's list price, plus $0.0025 for each reference image. The official price is a token-based estimate and leaves out MiniMax's launch-week 50% off 4K

Compare other models
Output specificationProvidersPublished provider priceTypical timeTry it
1K
MiniMaxOfficial
Try it
KIE
Typical time 15 sec
15 secTry it
2K
MiniMaxOfficial
Typical time 27 sec
27 secTry it
KIE
Typical time 26 sec
26 secTry it
4K
MiniMaxOfficial
Try it
KIE
Typical time 37 sec
37 secTry it

By default Yir sends each job to the eligible channel with the lowest estimated price. If an attempt is confirmed failed, it retries on another channel within your max_cost. No routing parameters needed in your request. Routing and fallback docs

Pricing notes

Billed by the channel that actually runs the job. Failover may switch channels, which can change cost and time.

Native 4K, with the weights out in the open

  • Open weights that fit one 16 GB card

    The weights are on Hugging Face; one tester rendered 16 MP images on a single 16 GB RTX 5080, streaming the rest from system memory

  • Scored highest on text and design

    An independent 600-prompt test at 16 MP averaged 3.94 out of 5 from an AI grader

    Text & design
    4.36
    People
    4.22
    Commercial
    3.56
    Info design
    3.56

Use the API

Hand the code to a coding agent, generate right in the chat with MCP or the Skill, or integrate yourself with the SDK or the OpenAI-compatible API.

Let a coding agent integrate it

Copy the integration prompt, or open it directly in Codex or Claude. The agent reads this page and the model contract, then writes submit, wait and result handling into your project.

Add the Yir MCP server

Connect it to ChatGPT, Claude or Cursor, then mention @Yir and ask for MiniMax H3 Image by name. It quotes first and only generates after you confirm.

https://gateway.yir.ai/mcp
Setup steps for each client

One command for Claude Code

Create an API key in the console, set it as YIR_API_KEY, then run:

claude mcp add --transport http yir https://gateway.yir.ai/mcp --header "Authorization: Bearer $YIR_API_KEY"

Install the Yir Skill

Set YIR_API_KEY where your agent runs, add the Skill to Claude Code, Codex or another coding agent, then say “use MiniMax H3 Image on Yir to make…”.

npx skills add yir-ai/skills
About the Yir Skill

Install the official SDK with your package manager, or copy the code snippet below to get started

$pnpm add @yir-ai/sdk
import { createNodeYirClient } from "@yir-ai/sdk/server";
 
// Reads YIR_API_KEY from the environment by default: process.env.YIR_API_KEY
const client = createNodeYirClient();
 
// 1. Submit an image generation job
const job = await client.submitImage({
model: "minimax/minimax-h3-image",
input: {
type: "text",
prompt: "Create a citrus sparkling water product poster: a clear glass bottle and fresh oranges, cream background, soft natural light, and a crisp product label",
},
parameters: {
resolution: "4K",
aspect_ratio: "1:1",
n: 1,
},
});
 
// 2. Wait for the job to finish and deliver its result
const result = await client.waitForJob(job.id);
console.log("Delivered files:", result.result);
if (result.result && "files" in result.result) {
for (const file of result.result.files) {
console.log("->", file.url);
}
}

Projects already on the OpenAI protocol, or gateways such as new-api, only need a new Base URL and key. OpenAI compatibility guide

OpenAI SDK base_url
https://gateway.yir.ai/openai/v1
new-api channel Base URL
https://gateway.yir.ai/openai
Key
Yir API key
Model ID
minimax/minimax-h3-image
curl https://gateway.yir.ai/openai/v1/images/generations \
  -H "Authorization: Bearer $YIR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "minimax/minimax-h3-image",
    "prompt": "Create a citrus sparkling water product poster: a clear glass bottle and fresh oranges, cream background, soft natural light, and a crisp product label",
    "resolution": "4K",
    "aspect_ratio": "1:1"
  }'

Parameter overview

Common parameters; limits depend on the current model and selected channel

API docs
Resolution
resolution
  • 1K
  • 2K
  • 4K

Output resolution tier. Higher resolutions offer sharper pixel fidelity and scale pricing accordingly

Aspect ratio
aspect_ratio
  • 1:1
  • 2:3
  • 3:2
  • 3:4
  • 4:3
  • 4:5
  • 5:4
  • 9:16
  • 16:9
  • 21:9

Geometric aspect ratio. Choose according to target medium (portrait, banner, or square)

Input mode
input_mode
  • Text input
  • Image input

Reference limits and formats depend on the model and selected channel

References
references
  • reference_image ≤ 16

Reference limits across input modes depend on the selected channel. Counts in the price table are examples, not input limits or free allowances.

Frequently asked questions

Start building with MiniMax H3 Image

Compare the same spec across providers and call multiple providers from one wallet.