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OpenAI launches GPT-4.1, mini and nano in the API with 1M-token context

GPT-4.1 at a glance

The API-only GPT-4.1 family improved coding and instruction following over GPT-4o, raised context to 1M tokens, cut prices, and started the retirement of GPT-4.5 Preview.

What changed with GPT-4.1

On April 14, 2025, OpenAI launched GPT-4.1, GPT-4.1 mini and GPT-4.1 nano, available only through the API. All three support up to 1 million tokens of context, up from 128,000 for GPT-4o. OpenAI reported 54.6% on SWE-bench Verified for GPT-4.1, versus 33.2% for GPT-4o, and large gains in following formats, negative instructions and multi-turn requests.

Launch prices per million tokens were $2.00 input and $8.00 output for GPT-4.1, $0.40 and $1.60 for mini, and $0.10 and $0.40 for nano, OpenAI's cheapest and fastest model at the time, with deeper discounts for cached input and the Batch API. OpenAI also announced that GPT-4.5 Preview would be turned off in the API on July 14, 2025.

GPT-4.1 benchmarks and pricing

Values are copied from the linked source on the date shown. They are not IA Compa measurements.

Input price per 1M tokensas of · Source for Input price per 1M tokens: openai.com (opens in a new tab)
$2.00
Output price per 1M tokensas of · Source for Output price per 1M tokens: openai.com (opens in a new tab)
$8.00
Input price per 1M tokens · GPT-4.1 minias of · Source for Input price per 1M tokens: openai.com (opens in a new tab)
$0.40
Output price per 1M tokens · GPT-4.1 minias of · Source for Output price per 1M tokens: openai.com (opens in a new tab)
$1.60
Input price per 1M tokens · GPT-4.1 nanoas of · Source for Input price per 1M tokens: openai.com (opens in a new tab)
$0.10
Output price per 1M tokens · GPT-4.1 nanoas of · Source for Output price per 1M tokens: openai.com (opens in a new tab)
$0.40
Context windowas of · Source for Context window: openai.com (opens in a new tab)
1M tokens

How it compares

Other models in the same category that we have covered, using each model's latest recorded value. (Models)

Input price (USD per 1M tokens) · GPT-4.1lower is better
Input price (USD per 1M tokens) · GPT-4.1 minilower is better
Input price (USD per 1M tokens) · GPT-4.1 nanolower is better
Output price (USD per 1M tokens) · GPT-4.1lower is better
Output price (USD per 1M tokens) · GPT-4.1 minilower is better
Output price (USD per 1M tokens) · GPT-4.1 nanolower is better
Context window (tokens) · GPT-4.1higher is better

Where to compare GPT-4.1

Independent leaderboards and official resources for comparing this model yourself. Rankings change often; each site shows its own current data.

Why GPT-4.1 matters for businesses

For businesses, GPT-4.1 became a dependable workhorse for agents and automations: it follows detailed instructions literally, handles long documents, and nano made high-volume classification or routing very cheap. OpenAI advised writing explicit, specific prompts because the model takes them literally.

Sources for this story

  1. Official
  2. GPT-4.1 model page (opens in a new tab)

    Artificial Analysis · artificialanalysis.ai

    Benchmark

Last verified: . IA Compa summarizes public announcements for business readers. We are not affiliated with the companies mentioned. Always confirm details, pricing, and availability with the official source.

  • #llm
  • #openai
  • #gpt-4-1
  • #long-context
  • #coding

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