When was GPT-4.1 mini released?

GPT-4.1 mini was released by OpenAI on Monday, Apr 14 2025.

Who made GPT-4.1 mini?

GPT-4.1 mini was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.

How much does GPT-4.1 mini cost?

GPT-4.1 mini costs $0.40 per million input tokens and $1.60 per million output tokens through the OpenAI API. Cached input is $0.10 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.

What benchmark scores did GPT-4.1 mini get?

GPT-4.1 mini reports 1 tracked benchmark score — SWE-Bench Verified: 23.6%. Scores are the figures published at release by OpenAI.

Is GPT-4.1 mini open source?

No. GPT-4.1 mini is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.

What came before and after GPT-4.1 mini?

OpenAI's previous tracked release was GPT-4.1 on Apr 14 2025. It was followed by GPT-4.1 nano on Apr 14 2025.

GPT-4.1 mini

Released Apr 14 2025

GPT-4.1 mini is an AI model released by OpenAI on Monday, Apr 14 2025, the same day as GPT-4.1. Benchmark results (shown below) cover SWE-Bench Verified.

API pricing

Input: $0.40
Cached input: $0.10
Output: $1.60

USD per 1M tokens

Available from


Azure	—	$0.40	$1.60	1M
Azure	swedencentral	$0.44	$1.76	1M

USD per 1M tokens

Benchmarks

SWE-Bench Verified

23.6%

via BenchLM

#57 of 57

Source: BenchLM, retrieved 31 August 2026. Every other score here is the figure the lab published at launch.

Compare GPT-4.1 mini with

GPT-4.1 mini

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Frequently asked questions

: GPT-4.1 mini was released by OpenAI on Monday, Apr 14 2025.
: GPT-4.1 mini was built by OpenAI. Creators of ChatGPT and the GPT series of models. Pioneered large-scale language model research.
: GPT-4.1 mini costs $0.40 per million input tokens and $1.60 per million output tokens through the OpenAI API. Cached input is $0.10 per million tokens. Rates are pay-as-you-go API prices verified against OpenAI's published pricing on August 18, 2026.
: GPT-4.1 mini reports 1 tracked benchmark score — SWE-Bench Verified: 23.6%. Scores are the figures published at release by OpenAI.
: No. GPT-4.1 mini is a proprietary model. The weights are not published — it is available only through the provider's own API, apps, or partner platforms.
: OpenAI's previous tracked release was GPT-4.1 on Apr 14 2025. It was followed by GPT-4.1 nano on Apr 14 2025.