DeepSeek is a Chinese AI company that develops cutting-edge open-source language models. V3.1 is their flagship hybrid AI system that combines chat, reasoning, and coding in a single 685B parameter model.
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Fast and smart
The model answers simple questions instantly, and engages reasoning for complex requests, which ensures accuracy.
128K context window
That's roughly 400 pages of text the AI can remember and reference throughout your chat.
Frontier-Level AI
DeepSeek V3.1 Matches or exceeds GPT-5 and Claude 4 performance on coding, math, and reasoning benchmarks.
Advanced Problem Solving
DeepSeek V3.1 excels at mathematics, logic puzzles, and complex reasoning tasks, such as coding.
One model to rule them all
No need to switch between different models. V3.1 seamlessly integrates chat, reasoning, and coding.
Fastest reasoning
V3.1-Think mode achieves the same answer quality as DeepSeek-R1 but responds significantly faster.
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GPT-6 Sol
Limited
GPT-6 Astra
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Art & Images AI
GPT Image 2.5
Overchat
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Grok 4.7
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Llama 4
Art & Images AI
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GPT Image 2.5
FLUX 2 Max
Recraft
Stable Diffusion
Nano Banana 2
Video Generation AI
Kling 3
Seedance 2.5
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Runway Gen-4
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$25.4
per week
for multiple tools
Purchased Individually
$20/m
$20/m
$20/m
$12/m
$18/m
$20/m
What is DeepSeek V3.1?
DeepSeek V3.1 is a hybrid AI model with 685 billion parameters that combines chat, reasoning and coding capabilities in a single system. Released in August 2025, it features dual thinking/non-thinking modes and can process up to 128,000 tokens of context.
How to access DeepSeek V3.1?
You can access DeepSeek V3.1 directly on Overchat AI by selecting it from the model list. It's also available as open-source weights on Hugging Face for local deployment, through the DeepSeek Chat platform, or via their API for developers.
How to use DeepSeek V3.1?
Just start chatting as you would with any other AI assistant. For complex problems, the model automatically enters thinking mode. You can paste long documents, ask coding questions or request help with maths and reasoning tasks — all in natural language.
What are the main improvements in DeepSeek V3.1?
V3.1 introduces a single model with hybrid thinking modes (as opposed to separate models previously), enabling faster reasoning than DeepSeek-R1. It also features an expanded 128K context window and significantly improved tool-calling abilities through post-training optimisation.
Is DeepSeek V3.1 better than GPT-5?
DeepSeek V3.1 matches or exceeds GPT-5 on many benchmarks, particularly in coding, achieving 71.6% on Aider compared to GPT's lower scores. It also costs 98% less to run. V3.1 excels at pure language and reasoning tasks, as well as coding.
Can DeepSeek V3.1 handle coding tasks?
Yes, coding is one of the strongest capabilities of V3.1. It outperforms Claude Opus 4 on coding benchmarks and supports multiple programming languages, including Python and JavaScript. This makes it ideal for software development and debugging.
