OpenAI Just Released GPT-4.1 to the API
It outperforms GPT-4o across key benchmarks, including:
  • Coding: 54.6% on SWE-bench Verified (vs 33.2% for GPT-4o)
  • Instruction Following: 38.3% on Multi Challenge (vs 27.8%)
  • Long Context: Handles up to 1 million tokens with improved retrieval and reasoning
There are three versions now available:
  • GPT-4.1: Full version with best performance
  • GPT-4.1 mini: Matches or exceeds GPT-4o with 83% lower cost and lower latency
  • GPT-4.1 nano: Fastest and lowest cost, ideal for classification and autocomplete tasks
Key improvements:
  • Better accuracy in long document analysis and multi-step reasoning
  • More reliable instruction following and formatting
  • Reduced extraneous edits in code generation
  • Enhanced ability to build functional AI agents
  • Long context available at no additional cost
  • Prompt caching discount increased to 75%
Cost (per 1M tokens):
  • GPT-4.1 – $2 input / $8 output (blended: ~$1.84)
  • GPT-4.1 mini – $0.40 input / $1.60 output (blended: ~$0.42)
  • GPT-4.1 nano – $0.10 input / $0.40 output (blended: ~$0.12)
GPT-4.1 is only available via API at the moment.
(GPT-4.5 will be gone on July 14, 2025)
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Michael Texidor
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OpenAI Just Released GPT-4.1 to the API
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