GPT-4.1 mini

Summary

GPT-4.1 mini is OpenAI's cost-efficient workhorse, released April 14, 2025 — matching or exceeding GPT-4o's intelligence while cutting latency nearly in half and reducing cost by roughly 83%. It retains GPT-4.1's 1M token context window and strong instruction-following.

Overview

GPT-4.1 mini is OpenAI's cost-efficient workhorse — a compact model that matches or exceeds GPT-4o's intelligence while cutting latency nearly in half and reducing cost by approximately 83%. Released April 14, 2025, it brings GPT-4.1's strong instruction following and 1 million token context window to a price tier accessible for high-volume deployments. For developers who need reliable, fast output at scale without the cost of full GPT-4.1 or GPT-5.2, it is OpenAI's recommended starting point.

GPT-4.1 mini is analogous to Anthropic's Claude Haiku in positioning — the model to reach for when volume and cost matter most, with capability that still far exceeds non-frontier alternatives.

Specifications

  • Developer: OpenAI
  • Model String: gpt-4.1-mini-2025-04-14
  • Release Date: April 14, 2025
  • Type: Large Language Model (LLM), Multimodal (text + vision)
  • Context Window: 1,000,000 tokens
  • Access: OpenAI API, ChatGPT (Free tier), Azure OpenAI Service
  • Pricing: See OpenAI pricing page for current rates (significantly lower than GPT-4.1)

Capabilities

Intelligence at Low Cost: Matches or exceeds GPT-4o on intelligence benchmarks while being significantly cheaper and faster — making it the best value option in the GPT-4 class.

Low Latency: Nearly half the latency of GPT-4.1, making it well-suited for interactive applications, real-time chatbots, and high-throughput pipelines.

1M Token Context: Same 1 million token context window as GPT-4.1, enabling large-document and large-codebase processing at a fraction of the cost.

Instruction Following & Tool Use: Inherits GPT-4.1's strong instruction compliance and function calling capabilities, making it reliable for structured agentic workflows.

Limitations

GPT-4.1 mini trades some capability depth for cost and speed. For tasks requiring nuanced reasoning, complex analysis, or the highest quality outputs, full GPT-4.1 or GPT-5.2 will outperform it. It is not a reasoning model — hard logical problems or multi-step inference chains are better served by the o-series.

Recent Developments

  • April 14, 2025 Launch: Released as OpenAI's best cost-efficiency option, replacing GPT-4o mini as the recommended compact model.
  • Free Tier Inclusion: Available to ChatGPT free users, giving broad access to 1M context capability without a subscription.

Last Updated

February 26, 2026

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