DeepSeek V3.1 Thinking

DeepSeek-V3.1-Think · DeepSeek

Thinking mode of DeepSeek-V3.1; DeepSeek V3.1 is a text generation model provided by DeepSeek, featuring a hybrid reasoning architecture that achieves an effective integration of thinking and non-thinking modes.

API Pricing

Input$0.56 / 1M tokens
Output$1.68 / 1M tokens

Specifications

Context128K tokens
Modalitiestext
Featuresthinking, tool calling, function calling, structured outputs

Frequently asked questions

What is DeepSeek V3.1 Thinking?

Thinking mode of DeepSeek-V3.1; DeepSeek V3.1 is a text generation model provided by DeepSeek, featuring a hybrid reasoning architecture that achieves an effective integration of thinking and non-thinking modes.

What is the context length of DeepSeek V3.1 Thinking?

DeepSeek V3.1 Thinking has a 128,000 token context window.

How much does DeepSeek V3.1 Thinking cost?

On AIHubMix, DeepSeek V3.1 Thinking costs $0.56 per million input tokens and $1.68 per million output tokens.

What modalities does DeepSeek V3.1 Thinking support?

DeepSeek V3.1 Thinking accepts text input.

What capabilities does DeepSeek V3.1 Thinking support?

DeepSeek V3.1 Thinking supports thinking, tool calling, function calling and structured outputs. Per-protocol parameter support is listed in the capability table on this page.

How do I call DeepSeek V3.1 Thinking via API?

DeepSeek V3.1 Thinking is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to DeepSeek-V3.1-Think — no other code changes needed.

Who created DeepSeek V3.1 Thinking?

DeepSeek V3.1 Thinking is developed by DeepSeek. AIHubMix aggregates it alongside models from other providers behind one API and one bill.

More models from DeepSeek

See all DeepSeek models →

DeepSeek V4 Flash 0731

by DeepSeek

DeepSeek-V4-Flash-0731(deepseek-v4-flash-0731) is an open-source MoE large language model…

$0.142/1M in · $0.284/1M out
1,000,000 tokens context

DeepSeek V4 Flash Vision Exp

by DeepSeek

DeepSeek’s officially released new multimodal visual-understanding model…

$0.142/1M in · $0.284/1M out
1,000,000 tokens context

DeepSeek V4 Pro 0813

by DeepSeek

DeepSeek V4 Pro 0813 is DeepSeek’s high-performance general-purpose reasoning and agent…

$0.692/1M in · $2.075/1M out
1,000,000 tokens context

DeepSeek V4 Flash 0731 Fast

by DeepSeek

DeepSeek V4 Flash 0731 Fast is a high-speed deployment of DeepSeek’s agentic model…

$0.28/1M in · $0.56/1M out
1,000,000 tokens context

DeepSeek V4 Flash

by DeepSeek

(This model currently points to the older 0423 version; if you need to request the latest…

$0.142/1M in · $0.284/1M out
1,000,000 tokens context

DeepSeek V4 Pro

by DeepSeek

(This model currently points to the older 0423 version; if you need to request the latest…

$1.69/1M in · $3.38/1M out
1,000,000 tokens context

Use DeepSeek V3.1 Thinking via the AIHubMix unified API — one interface for every major LLM.