DeepSeek: DeepSeek V3.1

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
Provider OpenRouter
Creator DeepSeek
Familydeepseek-chat
License—
Parameters—
Status—
Input modalitiestext
Output modalitiestext
Architecture—
Knowledge cutoff—
Training data cutoff—
Release date
Deprecation date—
Typechat
Reasoning tokens—
Max input—
Open weight—
Sourceofficial
Last updated

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

ModelContextMax outPricing
DeepSeek: DeepSeek V3 0324164K16K$0.2$0.77
DeepSeek: DeepSeek V3.1164K33K$0.21$0.79
DeepSeek: DeepSeek V3164K16K$0.32$0.89

API

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

DeepSeek: DeepSeek V3.1

deepseek/deepseek-chat-v3.1

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

Changes · 5 entries
deepseek/deepseek-chat-v3.1updated9ddd19May 14, 2026, 07:26 AM
context_window32768→163840
max_output_tokens7168→32768
pricinginput$0.15→$0.21output$0.75→$0.79cached input$0.13
deepseek/deepseek-chat-v3.1update1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
deepseek/deepseek-chat-v3.1updateb301ebeMar 23, 2026, 11:47 PM
model_typechat
deepseek/deepseek-chat-v3.1update2b100acMar 23, 2026, 05:30 AM
release_date2025-08-21
taglineDeepSeek-V3.1 is a large hybrid reasoning model (671B par...
tools["function_calling"]
deepseek/deepseek-chat-v3.1create7f5c66fMar 21, 2026, 05:16 AM