GPT-4.1 mini

Text

Smaller GPT-4.1 model; 1M context, image input and tools via OpenAI-compatible API

Input $0.40 / 1M tokens | Output $1.60 / 1M tokens GPT-4.1 mini API reference →

Model health Insufficient data

runapi.ai

# Base URL
https://runapi.ai

# Endpoints
POST /v1/chat/completions
POST /v1/responses
POST /v1/messages
POST /v1beta/models/gpt-4.1-mini:generateContent
POST /v1beta/models/gpt-4.1-mini:streamGenerateContent

curl https://runapi.ai/v1/chat/completions \
  -H "Authorization: Bearer $RUNAPI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "gpt-4.1-mini",
  "messages": [
    {
      "role": "user",
      "content": "Analyze this quarterly revenue data and produce a summary with key trends, anomalies, and three recommendations."
    }
  ]
}'

from openai import OpenAI

client = OpenAI(
    base_url="https://runapi.ai/v1",
    api_key="your-runapi-key"
)

response = client.chat.completions.create(
    model="gpt-4.1-mini",
    messages=[{"role": "user", "content": "Analyze this quarterly revenue data and produce a summary with key trends, anomalies, and three recommendations."}]
)

import OpenAI from "openai";

const client = new OpenAI({
  baseURL: "https://runapi.ai/v1",
  apiKey: "your-runapi-key"
});

const response = await client.chat.completions.create({
  model: "gpt-4.1-mini",
  messages: [{ role: "user", content: "Analyze this quarterly revenue data and produce a summary with key trends, anomalies, and three recommendations." }]
});

https://runapi.ai 5 endpoints

OVERVIEW

What GPT-4.1 mini is built for

GPT-4.1 mini is the smaller member of OpenAI's GPT-4.1 family, released on April 14, 2025 as the snapshot gpt-4.1-mini-2025-04-14. It keeps the 1,047,576-token context window and 32,768 max output tokens of GPT-4.1, and OpenAI targets it at fast instruction-following and tool-calling workloads.

It accepts text and image input and answers without a reasoning step. OpenAI supports function calling and structured outputs on the model, and recommends GPT-5 mini for more complex tasks.

On RunAPI, call gpt-4.1-mini through the OpenAI-compatible Chat Completions endpoint (/v1/chat/completions) with the OpenAI SDK pointed at https://runapi.ai/v1. The same API key also calls gpt-4.1 and the newer GPT models, so you can switch by changing the model ID.

Model ID

gpt-4.1-mini

Released

April 14, 2025

Context window

1,047,576 tokens

Max output

32,768 tokens

Input

Text and images

Reasoning

None (non-reasoning model)

Endpoint on RunAPI

OpenAI Chat Completions

Playground

Try GPT-4.1 mini

Pick any model and generate in seconds.

Specifications

Provider	OpenAI
Model ID	gpt-4.1-mini
Modality	Text
Task types	Synchronous
API endpoint	/v1/chat/completions
	/v1/responses

	/v1/messages
	/v1beta/models/gpt-4.1-mini:generateContent
	/v1beta/models/gpt-4.1-mini:streamGenerateContent
Billing unit	1K tokens
Catalog status	Operational

HOW IT WORKS

Use This Model in 3 Steps

Get Your Key

Sign up for free and create an API key for gpt-4.1-mini from the dashboard.
Send a Request

POST to /v1/chat/completions with the gpt-4.1-mini model slug and your parameters.
Get Results

Read the completed gpt-4.1-mini response directly from the endpoint.

What this model offers

Endpoint coverage

Exposes 1 public endpoint(s): chat_completion.

Usage-based billing

Metered by 1K tokens with no subscription requirement.

GPT-4.1 mini Pricing

Endpoint

Price

chat_completion

Input: $0.40 / 1M tokens Output: $1.60 / 1M tokens

Cache read: $0.10 / 1M tokens

API REFERENCE

Endpoint Specification

Endpoint: POST /v1/chat/completions
Model ID: gpt-4.1-mini
Task Types: chat_completion

Request parameters

No request parameters are published for this endpoint.

USE CASES

Customer support

Answer customer questions from a private knowledge base, reducing ticket volume.

Document analysis

Draft contract summaries and flag key clauses for attorney review.

Code generation

Auto-generate unit tests, code reviews, and refactoring suggestions in CI.

Trusted by developers

API Calls / Day

33.3%

Success Rate

5.1s

Avg Generation

Verified customer feedback is not available for this model yet.

FAQ

Frequently asked questions about GPT-4.1 mini

When should I use gpt-4.1-mini instead of gpt-4.1?

Use gpt-4.1-mini for fast, high-volume instruction following and tool calls where the larger model is not needed. Use gpt-4.1 for harder instructions. Both share the same context window, output limit, and input types.

Does GPT-4.1 mini accept images?

Yes. It takes text and image input. On RunAPI, add image_url parts next to the text in messages[].content[] of a Chat Completions request.

Does GPT-4.1 mini reason before answering?

No. Like gpt-4.1, it has no reasoning step. OpenAI recommends GPT-5 mini for more complex tasks.

How do I call GPT-4.1 mini through RunAPI?

Point the OpenAI SDK at https://runapi.ai/v1 with your RunAPI API key and send Chat Completions requests with model set to gpt-4.1-mini. Tools use the standard OpenAI tools format.

How do I select gpt-4.1-mini?

Pass the model ID shown in the quickstart.

What's the rate limit on this variant?

Per-key rate limits scale with your usage tier. The pricing page shows current limits. If you need higher throughput, contact support to discuss tier upgrades.

Can I switch variants later?

Yes. Variant is a parameter in the request. Switch by changing the model ID — no code changes, no re-authentication, no separate billing setup. All variants share the same API key and request shape.

Does it stream?

Where streaming is available, RunAPI streams end-to-end. LLM models support token-level streaming. Media models use async task polling or webhook callbacks for result delivery.

Where do I report quality issues?

Open an issue on the public GitHub repo or email support at [email protected]. Include the task ID and model ID so the team can investigate the specific generation.

Do I need a separate provider account?

No. Your RunAPI API key is enough to access this variant and every other model in the catalog. You do not need accounts with the underlying provider.

Building with a team?

We're here to help with enterprise setup, integrations, and technical questions.