DeepSeek: DeepSeek V3.1

Name: DeepSeek: DeepSeek V3.1
Author: OpenRouter

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates.

Context

164K

Max output

33K

Input price

$0.21/1M tokens

Output price

$0.79/1M tokens

Capabilities

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

Model IDdeepseek/deepseek-chat-v3.1

ProviderOpenRouter

CreatorDeepSeek

Familydeepseek-chat

License—

Parameters—

Status—

Input modalitiestext

Output modalitiestext

Architecture—

Knowledge cutoff—

Training data cutoff—

Release date2025-08-21

Deprecation date—

Typechat

Reasoning tokens—

Max input—

Open weight—

Sourceofficial

Last updated2026-05-14

Tools

Function Callingfunction_calling

Call external functions and APIs

Pricing

Input

$0.21

Output

$0.79

Cache write

—

Cache read

$0.13

Batch in

—

Batch out

—

Family Comparison: deepseek-chat

Model	Caps	Perf	Speed	Context	Max out	Pricing
DeepSeek: DeepSeek V3 0324	RVTS	—	—	164K	16K	$0.2$0.77
DeepSeek: DeepSeek V3.1	RVTS	—	—	164K	33K	$0.21$0.79
DeepSeek: DeepSeek V3	RVTS	—	—	164K	16K	$0.32$0.89

API

GET/v1/models/openrouter/deepseek/deepseek-chat-v3.1