# DeepSeek R1: The Open-Source Reasoning Revolution That Changes Everything

> Source: <https://dev.to/ryan_zhao/deepseek-r1-the-open-source-reasoning-revolution-that-changes-everything-48m6>
> Published: 2026-09-13 03:47:54+00:00

Traditional LLMs generate text token by token, left to right. This autoregressive approach works for simple tasks but struggles with complex reasoning, math, and multi-step logic.

**The core problem**: How do you get an LLM to think before answering?

DeepSeek R1 uses a **Mixture of Experts** architecture combined with **Reinforcement Learning from Reasoning Feedback (RLRF)** to achieve:

This is dramatically more efficient than activating all parameters for every query.

| Benchmark | DeepSeek R1 | GPT-4 | Claude 3.5 | 
|---|---|---|---|
| Math (AIME) | 79.4% | 83.0% | 81.0% | 
| Coding (LiveCode) | 61.2% | 65.0% | 63.0% | 
| Reasoning (GPQA) | 74.8% | 78.0% | 76.0% | 

**Key insight**: Open-source models are now competitive with and sometimes surpassing closed models on reasoning tasks.

With MoE plus RLRF, the gap between open and closed models continues to narrow. The next frontier? **Multi-modal reasoning** — combining text, vision, and audio into unified reasoning pipelines.

*What reasoning benchmarks matter most to you? Share your thoughts below.*