OpenAI has just launched three new models within its API: GPT-4.1, GPT-4.1 mini, and GPT-4.1 nano. These models bring significant improvements in coding, instruction following, and offer extended context management, up to 1 million tokens.
Optimized performance
The flagship model, GPT-4.1, significantly enhances performance compared to GPT-4o, particularly in the following areas:
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Coding: GPT-4.1 achieves 54.6% on the SWE-bench Verified benchmark, a notable increase from GPT-4o (33.2%) and GPT-4.5 (38%). This result reflects an improvement in its ability to solve complex software development problems.
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Instruction following: On the Scale MultiChallenge evaluation, GPT-4.1 scores 38.3%, improving by 10.5 absolute points compared to GPT-4o.
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Long context: GPT-4.1 sets a new record with 72% on the Video-MME benchmark, dedicated to understanding multimodal content in an extended context.
A complete range to meet varied needs
In addition to GPT-4.1, the mini and nano variants offer effective compromises between performance and cost:
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GPT-4.1 mini: This more compact model surpasses GPT-4o in several evaluations while significantly reducing latency (nearly by half) and cost (reduction of 83%).
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GPT-4.1 nano: The fastest and most economical model, ideal for tasks such as classification or autocompletion, offering despite its reduced size, a context up to 1 million tokens.
Enhanced capabilities for intelligent agents
Thanks to its improvements in instruction-following reliability and extended context understanding, GPT-4.1 strengthens applications based on autonomous agents. Developers can now build more reliable and efficient systems for document management, software development, or automated customer request processing.
Planned end of GPT-4.5 Preview
OpenAI has announced the upcoming depreciation of the GPT-4.5 Preview model in favor of GPT-4.1, offering superior performance at lower cost. GPT-4.5 Preview will be deactivated starting July 14, 2025, to allow developers to make a smooth transition.
Exclusive availability via API
It should be noted that GPT-4.1 will be exclusively available through the OpenAI API. However, ChatGPT users will gradually benefit from the improvements of GPT-4.1 integrated into the GPT-4o version.
Optimized pricing
With pricing revised downwards, GPT-4.1 is now available at a cost 26% lower than GPT-4o for common requests. The highly competitive pricing of GPT-4.1 nano makes it the most affordable offer ever proposed by OpenAI.