OpenAI Launches GPT‑4.1!

GPT‑4.1 Family

• Three Variants: Main (full capability), Mini (balanced cost/performance), Nano (lightweight, lowest latency)
• Expanded Context Window: Up to 1 million tokens nearly 8× larger than GPT‑4o’s 128 k limit enabling deeper document analysis and extended conversations
• Cost Efficiency: Approximately 26 % cheaper per token compared to GPT‑4o, making large‑scale deployments more affordable

Performance Improvements

• Coding & Reasoning: 21 % boost in coding benchmarks over GPT‑4o and 27 % over GPT‑4.5 Preview, with stronger multi‑step reasoning and instruction following
• Developer Feedback: Early API users report smoother handling of complex prompts and substantial latency reductions ideal for AI agents and custom applications

Pricing & Deprecation Timeline

• API Availability: GPT‑4.1 models are live for all API subscribers today
• Sunsetting Older Models:
  • GPT‑4 will be retired from ChatGPT on April 30, 2025
  • GPT‑4.5 Preview is slated for deprecation by July 14, 2025, encouraging migration to GPT‑4.1

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Why It Matters for Developers

• Scalability: The unprecedented token capacity simplifies processing entire books, large codebases, or regulatory documents in a single call.
• Cost Control: More predictable billing with lower per‑token rates accelerates prototyping and production use cases.
• Competitive Edge: Incorporate state‑of‑the‑art AI into apps—from virtual assistants to data‑analysis pipelines faster and more affordably than ever before.