Where is the GPT-4.1 Mini documentation?

The GPT-4.1 Mini documentation on OpenRouter includes the Quasar Alpha and Optimus Alpha Reveal blog post. The quickstart covers API keys and your first request, and the API reference lists every parameter.

How much does GPT-4.1 Mini cost?

GPT-4.1 Mini costs $0.40/M input tokens and $1.60/M output tokens, with separate rates for Cache Read at $0.10/M tokens.

What is the context length of GPT-4.1 Mini?

GPT-4.1 Mini has a 1,047,576 token context window.

Does GPT-4.1 Mini support tool calling and structured outputs?

Yes. GPT-4.1 Mini accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.

What inputs and outputs does GPT-4.1 Mini support?

GPT-4.1 Mini accepts images, text, and files such as PDFs as input and returns text.

Which providers serve GPT-4.1 Mini?

GPT-4.1 Mini is served by 2 providers on OpenRouter: Azure and OpenAI. Requests are routed to the best available provider, with automatic failover to the others, and you can pin or exclude providers with provider routing.

When was GPT-4.1 Mini released?

GPT-4.1 Mini was released on April 14, 2025. Its knowledge cutoff is June 30, 2024.

OpenAI: GPT-4.1 Mini

openai/gpt-4.1-mini

Compare

GPT-4.1 Mini is a mid-sized model delivering performance competitive with GPT-4o at substantially lower latency and cost. It retains a 1 million token context window and scores 45.1% on hard instruction evals, 35.8% on MultiChallenge, and 84.1% on IFEval. Mini also shows strong coding ability (e.g., 31.6% on Aider’s polyglot diff benchmark) and vision understanding, making it suitable for interactive applications with tight performance constraints.

Modalities

In / out price

$0.40 / $1.60per 1M

Context

1.0M

Released

Apr 14, 2025

Knowledge cutoff

Jun 2024

Providers

Different companies host the same model. OpenRouter routes your request to one of them based on the routing mode you pick: Balanced (price + speed), Nitro (fastest), or Floor (cheapest).

Latency / throughput


	$0.40	$1.60	$0.10	0.81s	72 tok/s	100.00%
	$0.40	$1.60	$0.10	2.54s	91 tok/s	100.00%
Not used in Standard routing:Why these endpoints are not used
	$0.44	$1.76	$0.11	1.57s	110 tok/s	100.00%

Input $0.40Output $1.60
72 tok/s100.00% uptime
Input $0.40Output $1.60
91 tok/s100.00% uptime
Not used in Standard routing:Why these endpoints are not used
Input $0.44Output $1.76
110 tok/s100.00% uptime

Pricing

The average price customers actually pay for this model, next to the prices providers post. Caching and discounts mean the price actually paid is often well below the listed one.

Weighted average

Input

$0.2765/M tokens

Output

$1.599/M tokens

GPT-4.1 Mini — Price history

Price history

No effective price data for this selection

	$0.271	$1.60	42.9%	22.2%
	$0.278	$1.60	40.6%	77.3%
Not used in Standard routing:Why these endpoints are not used
	$0.242	$1.76	59.9%	0.5%

Effective in $0.271Effective out $1.60
Token share
22.2%
Effective in $0.278Effective out $1.60
Token share
77.3%
Not used in Standard routing:Why these endpoints are not used
Effective in $0.242Effective out $1.76
Token share
0.5%

Uptime

Uptime is the percentage of the past 3 days that at least one provider was responding to requests. Availability is the percentage of time that inference was successfully served. OpenRouter continuously monitors and uses the next-best provider when one returns an error.

Uptime (3d)

100.00%

Availability (3d)

99.98%

Availability over the last 3 days

Last 72 hours

Availability 99.98%

3 Days Ago2 Days AgoYesterdayNow

Availability over the last 24 hours

OpenRouter Availability

99.98%

Without Routing

98.75%

When an error occurs in an upstream provider, we can recover by routing to another healthy provider, if your request filters allow it. You can access per-provider uptime data programmatically through the Endpoints API. Learn more about our load balancing and provider routing options.

Benchmarks

Scores on standardized evaluations and this model’s own outputs on shared benchmark prompts. Higher percentages are better — and each rank shows where this model lands among the models evaluated on that source.

Benchmark score summary for OpenAI: GPT-4.1 Mini (Artificial Analysis, Design Arena and Vals AI)
Source	Benchmark	Score
Artificial Analysis	GPT-4.1 mini Coding Index	20.2
Artificial Analysis	GPT-4.1 mini GPQA Diamond	66.4%
Artificial Analysis	GPT-4.1 mini HLE	5.0%
Artificial Analysis	GPT-4.1 mini IFBench	38.3%
Artificial Analysis	GPT-4.1 mini τ²-Bench Telecom	52.9%
Artificial Analysis	GPT-4.1 mini AA-LCR	44.0%
Artificial Analysis	GPT-4.1 mini τ-Bench Banking	5.4%
Artificial Analysis	GPT-4.1 mini GDPval-AA	0.0%
Artificial Analysis	GPT-4.1 mini CritPt	0.0%
Artificial Analysis	GPT-4.1 mini LiveCodeBench	48.3%
Artificial Analysis	GPT-4.1 mini Terminal-Bench Hard	7.6%
Artificial Analysis	GPT-4.1 mini Terminal-Bench 2.1	10.1%
Artificial Analysis	GPT-4.1 mini MMLU-Pro	78.1%
Artificial Analysis	GPT-4.1 mini AIME 2025	46.3%
Artificial Analysis	GPT-4.1 mini AIME	43.0%
Artificial Analysis	GPT-4.1 mini MATH-500	92.5%
Design Arena	GPT-4.1 mini Models Arena 3D Elo	815
Design Arena	GPT-4.1 mini Models Arena Code Categories Elo	983
Design Arena	GPT-4.1 mini Models Arena Data Visualization Elo	1034
Design Arena	GPT-4.1 mini Models Arena Game Development Elo	1060
Design Arena	GPT-4.1 mini Models Arena UI Component Elo	952
Design Arena	GPT-4.1 mini Models Arena Website Elo	989
Vals AI	GPT 4.1 Mini AIME	49.4%
Vals AI	GPT 4.1 Mini CorpFin v2	57.9%
Vals AI	GPT 4.1 Mini Finance Agent v1	20.8%
Vals AI	GPT 4.1 Mini GPQA Diamond	67.9%
Vals AI	GPT 4.1 Mini LiveCodeBench	58.2%
Vals AI	GPT 4.1 Mini LegalBench	78.0%
Vals AI	GPT 4.1 Mini MATH 500	88.0%
Vals AI	GPT 4.1 Mini MedQA	84.6%
Vals AI	GPT 4.1 Mini MGSM	87.8%
Vals AI	GPT 4.1 Mini MMLU Pro	77.2%
Vals AI	GPT 4.1 Mini MMMU Pro	70.5%
Vals AI	GPT 4.1 Mini MortgageTax	65.5%
Vals AI	GPT 4.1 Mini TaxEval v2	71.9%

Apps

Public apps that send the most traffic to this model. Good signal for what real production workloads look like — and a hint at which use cases this model is best suited for.

ThetaWave

new

39.9Btokens

Descript

AI Video & Podcast Editor

5.93Btokens

OpenClaw

OpenClaw is an open-source AI agent that connects to your messaging apps and takes real actions on your behalf, from running commands and browsing the web to managing files and sending emails.

2.83Btokens

openrouter-engine

new

1.82Btokens

Dovera reformatter

new

1.7Btokens

Rest of OpenRouter

9.34B

Top 5 Apps

1.32B

Available through EU in-region routing

OpenAI: GPT-4.1 Mini is available through EU in-region routing. Requests sent to eu.openrouter.ai are decrypted in the EU and routed only to shared provider endpoints in Europe (the EU/EEA, the UK, and Switzerland).

Providers in Europe

Azure

Prices in Europe

Azure: $0.44/M tokens input, $1.76/M tokens output

Base URL

https://eu.openrouter.ai/api/v1

Plan

Requires Business or Enterprise. Self-serve on Business: no contract, no monthly minimum. OpenRouter Business for EU in-region routing

Fails closed: if no shared provider endpoint in Europe is available, the request errors instead of leaving the region. Requests served by your own BYOK key go to your deployment’s region, which you control. In-region routing docs

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OpenAI: GPT-4.1 Mini

Providers