Flash Sale 50% Off!

Don't miss out on our amazing 50% flash sale. Limited time only!

Sale ends in:

Get an additional 10% discount on any plan!

SPECIAL10
See Pricing
×

Daily Limit Reached

You have exhausted your limit of free daily generations. To get more free generations, consider upgrading to our unlimited plan for $4/month or come back tomorrow.

Get an additional 10% discount on any plan!

SPECIAL10
Upgrade Now
Save $385/Month - Unlock All AI Tools →

Upgrade to Premium

Thank you for creating an account! To continue using AI4Chat's premium features, please upgrade to a paid plan.

Access to all premium features
Priority customer support
Regular updates and new features - See our changelog
View Pricing Plans
7-Day Money Back Guarantee
Not satisfied? Get a full refund, no questions asked.
×

Credits Exhausted

You have used up all your available credits. Upgrade to a paid plan to get more credits and continue generating content.

Upgrade Now

You do not have enough credits to generate this output.

Very High Reasoning

DeepSeek v3.1

DeepSeek V3.1 is a revolutionary 671B-parameter MoE AI model with hybrid thinking and non-thinking modes, delivering lightning-fast responses or deep chain-of-thought reasoning in a single architecture. Unlock superior agent capabilities, tool calling, and 128K context for coding, analysis, and automation like never before.

128k Context
Very High Intelligence
Late 2024 Knowledge

Available for Chat, Vision, and File Uploads.

Performance Benchmarks

MMLU-Redux
91.8%
MMLU-Pro
83.7%
AIME 2024
66.3%

How do you want to interact?

Start a Conversation

Ask anything.
Have a natural conversation, brainstorm ideas, draft emails, or ask for advice.

Start Chatting

Use a Persona

Specialized Experts.
Instruct the AI to act as a Coding Tutor, Marketing Expert, or Travel Guide.

Pick a Persona

Why use DeepSeek v3.1?

Hybrid Reasoning Modes

Toggle between “thinking” (chain-of-thought) and “non-thinking” (rapid reply) modes using chat templates for flexible performance

Massive Context Capacity

Supports 128K-token context windows with extended training for handling long documents and complex tasks

Enhanced Tool & Agent Support

Improved tool calling, multi-step agent tasks, and reliable function calling for advanced workflows

Capability Examples

Code Debugging
I have a Python function that's supposed to sort a list but it's returning duplicates. Can you analyze my code across multiple files and fix it?
DeepSeek-V3.1 analyzes your multi-file codebase, identifies the duplicate logic in your sorting algorithm, and provides a corrected implementation with step-by-step reasoning.
Multi-language Customer Support
¿Cuál es la política de devolución? 我需要了解退货流程。 Qual é a política de reembolso?
DeepSeek-V3.1 responds accurately in Spanish, Chinese, and Portuguese simultaneously, explaining return policies with near-native proficiency across all 100+ supported languages.

How to use

1
Go to Chat

Navigate to the "AI Chat" page.

2
Select Model

Ensure DeepSeek v3.1 is selected.

3
Type Prompt

Ask a question or paste code.

4
Interact

Refine the answer by replying to the AI.

Compare LLMs Side-by-Side

Is DeepSeek v3.1 better than Claude 3.5 or Gemini? Test same prompts simultaneously in the Chat Playground.

Open Chat Playground

Made with ❤ by AI4Chat