Model by OpenAI

GPT-4.1

GPT-4.1 is OpenAI's April 2025 non-reasoning model, built for instruction following and long-context code work, and it is now deprecated.

Checked 2026-11-05

GPT-4.1 is OpenAI's April 2025 non-reasoning model, built for instruction following and long-context code work, and it is now deprecated. OpenRouter listed it on 14 April 2025 with a context of 1,047,576 tokens, image and file input, at $2 per million input tokens and $8 per million output tokens on its cheapest route, as listed on 5 November 2026. OpenAI's own model page gives the same prices, plus $0.50 for cached input, a maximum output of 32,768 tokens and a knowledge cutoff of 1 June 2024. The page marks it deprecated and suggests GPT-5 for complex tasks. The catch is the age of its knowledge: it will not know newer frameworks, and a deprecated model can be switched off with notice. The large context is its real strength, but you still pay for every token you send. We have not run it ourselves. We would use it only where a stable, existing long-context pipeline depends on it, and choose a current GPT or Claude model for anything new. Figures come from OpenAI's model page and OpenRouter's list.

Mentioned here

  • GPT-5.5

    GPT-5.5 is OpenAI's previous flagship, and it suits teams that pinned it for professional and agentic work and have not yet moved to the 6 series.

    • Closed

    OpenAI, 1.1M context, $5 in / 1M

  • GPT-5.4

    GPT-5.4 is an earlier OpenAI frontier model, and it suits teams already on the OpenAI API who need a very long context for coding and document work.

    • Closed

    OpenAI, 1.1M context, $2.50 in / 1M

  • GPT-5.3-Codex

    GPT-5.3-Codex is OpenAI's agentic coding model from early 2026, and it now suits only teams that must keep an existing pipeline running.

    • Closed
    • Coding

    OpenAI, 400K context, $1.75 in / 1M

  • GPT-6 Sol

    GPT-6 Sol is the middle model of OpenAI's GPT-6 family, released 2026-09-22.

    • Closed

    OpenAI, 1.1M context, $2 in / 1M

  • OpenAI API

    OpenAI's API bills per token.

    • Model / inference API
    • OpenAI compatible

Questions

What is the context window of GPT-4.1?

1,047,576 tokens, with up to 32,768 tokens of output.

How much does GPT-4.1 cost?

$2 per million input tokens and $8 per million output tokens, checked 31 October 2026.

Can I run GPT-4.1 on my own hardware?

No. The weights are not published, so you use it through the maker's API or a hosting provider.

Who makes GPT-4.1?

OpenAI makes it, and released it on 14 April 2025.

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Where you can run it

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  • OpenRouter

    OpenRouter routes more than 600 models through one API key.

    • Model gateway (router)
    • OpenAI compatible

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