GPT-4.1 Mini
OpenAI GPT-4.1 mini: fast non-reasoning GPT model with 1M token context, instruction following, fine-tuning, and predicted outputs support. No reasoning step.
Model Overview
Capabilities, design details, and architectural traits
GPT 4.1 mini - GPT-4.1 Intelligence at Fast-Tier Speed
GPT 4.1 mini is the smaller, faster variant of GPT 4.1. OpenAI documented that it matches or exceeds GPT 4o in intelligence evaluations while reducing latency by nearly half. It shares GPT 4.1's defining traits - 1M token context window, instruction following, tool calling, and low latency without a reasoning step - at a faster speed rating.
| Trait | Detail |
|---|---|
| Context window | 1,047,576 tokens (1M), identical to GPT 4.1, at fast-tier speed |
| No reasoning step | Produces output without a chain-of-thought pass; Speed rated Fast vs GPT 4.1's Medium |
| Fine-tuning | Supported - including supervised fine-tuning and direct preference optimization |
| Predicted outputs | Supported - allows supplying an expected output to accelerate responses |
Positioned as the GPT 4o mini Successor for the 4.1 Generation
OpenAI's announcement described GPT 4.1 mini as a significant leap in small model performance." It replaces GPT 4o mini as the fast non-reasoning option in the 4.1 family, carrying the same 1M token long-context comprehension improvements that distinguish the 4.1 generation from GPT 4o.
Benchmark Performance
Independent evaluations · Artificial Analysis
Accuracy & Capability Details
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| Model Details | |||
|---|---|---|---|
| General Info | |||
| Provider | OpenAI | Anthropic | Anthropic |
| Release Date | April 14, 2025 | September 22, 2026 | September 28, 2026 |
| Knowledge Cutoff | Jun 2024 | - | Jun 2026 |
| Context & Limits | |||
| Context Window | 1.0M Best Context Window | 1M | 1M |
| Pricing (per 1M tokens) | |||
| Input Pricing | $0.40 Best Input Pricing | $4 | $2 |
| Output Pricing | $1.60 Best Output Pricing | $20 | $10 |
| Modalities | |||
| Inputs | imagetextfile | textimagefile | textimagefile |
| Outputs | text | text | text |
| Benchmarks (0-100) | |||
| Intelligence Index | 10.2 | 57.6 Best Intelligence Index | 56.0 |
| Coding Index | 20.2 | - | - |
| Agentic Index | 1.8 | - | - |
Humanity's Last Exam
Extremely difficult logical reasoning and knowledge.
Long Context Reasoning
Logical reasoning over long context windows.
SciCode Benchmark
Scientific coding and mathematical modeling.
Independent evaluation data provided by Artificial Analysis. To view the latest benchmarks and full details, visit their official site.
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