Physix FrontierDeepSeek R1/V3 In-Depth Review - The Light of Domestic Open Source
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The Light of Domestic Open Source · Reasoning capabilities rival o1, extremely low API prices
Top-tier domestic open-source reasoning model
🚀 Go to Official Site to Experience
🏢 Produced by DeepSeek
📅 Updated 2026-03
🌐 deepseek.com
💰 Extremely Low API Pricing
⭐ Overall Rating
Reasoning Capability: 9.5 ｜ Coding Capability: 9.2 ｜ Chinese Language Ability: 9.3 ｜ API Cost-Performance Ratio: 9.9 ｜ Open Source Ecosystem: 9.0
🎉 King of Cost-Performance: DeepSeek R1's reasoning capability rivals OpenAI o1, but its API price is only 1/30th or even lower, making it the most disruptive domestic large model of 2026.
🔄 How to Choose Between R1 and V3
DeepSeek R1 — Reasoning Enhanced: Optimized specifically for complex reasoning scenarios, featuring built-in "Chain-of-Thought" processes that analyze problems step-by-step before answering. Suitable for: mathematical proofs, competition problems, logical reasoning, complex code debugging.
DeepSeek V3 — General Purpose Enhanced: Mixture-of-Experts (MoE) architecture, comprehensive capabilities, faster response speed, and lower cost. Suitable for: daily conversation, content creation, document summarization, rapid code generation.
💡 Recommended Strategy: Prioritize V3 for daily tasks (fast speed/low cost), switch to R1 for complex math/logic problems (higher accuracy).
🚀 Core Highlights
🧮 Reasoning Rivals o1: R1 matches OpenAI o1 on benchmarks like AIME and MATH, achieving top-tier accuracy in practical reasoning tests.
💰 Disruptively Low Prices: API input price is approx. $0.55/M tokens, 30-50 times cheaper than GPT-4o, ideal for high-frequency calls.
📖 Fully Open Source: Model weights are open source under MIT license, free for commercial use, supports local deployment (requires high-end GPU).
🌐 Top-Tier Chinese: Trained natively on Chinese data, achieving the highest level among domestic models in Chinese understanding, expression, and creation.
💻 Strong Coding Ability: Excellent performance on HumanEval and SWE-bench, comprehensive support for code generation/debugging/refactoring.
🔌 OpenAI Compatible API: API format is compatible with OpenAI, allowing seamless switching for existing projects, saving significant integration costs.
⚔️ Comparison with Mainstream Models
| Dimension | DeepSeek R1 | GPT-4o | Claude 3.5 |
|---|---|---|---|
| Mathematical Reasoning | ✓ Top-tier | ✓ Strong | ✓ Strong |
| Chinese Ability | ✓ Strongest | Medium | Medium |
| API Price | ✓ Extremely Low | ✗ Higher | ✗ Higher |
| Open Source Availability | ✓ MIT Open Source | ✗ Closed Source | ✗ Closed Source |
| Response Speed | Medium (R1 slower) | ✓ Fast | ✓ Fast |
| Multimodal | Limited support in V3 | ✓ Strong | ✓ Strong |
💰 API Pricing Reference
DeepSeek V3: ¥1 / 1 million tokens (input) — General dialogue/writing/code, fast response, 128K context, OpenAI API compatible.
DeepSeek R1: ¥4 / 1 million tokens (input) — Complex reasoning/math, Chain-of-Thought output, 64K context, capabilities rivaling o1.
💡 Register at the official site platform.deepseek.com to get an API Key; new users receive free credits. You can also experience direct web chat via chat.deepseek.com.
👤 Suitable Use Cases
- ✅ Math/Competition/Reasoning — R1 has top-tier reasoning ability, extremely high problem-solving accuracy
- ✅ Chinese Content Creation — Native Chinese optimization, writes smooth articles/scripts/reports
- ✅ High-Frequency API Calls — Price is only 1/30th of GPT-4o, extremely low cost
- ✅ Code Generation & Debugging — Coding ability rivals Claude 3.5, but at a lower price
- ✅ Local Private Deployment — Open source weights allow self-deployment, data stays within borders
- ❌ Complex Image-Text Understanding — Multimodal capabilities are weaker than GPT-4o/Gemini
- ❌ Real-Time Search Information — Does not have internet search capabilities (requires third-party integration)
