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
147K
Input price
$0.25/1M tokens
Output price
$0.95/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode

Details

Model IDdeepseek/deepseek-chat-v3.1
Provider OpenRouter
Creator DeepSeek
Familydeepseek-chat
License—
Status—
Typechat
Input modalitiestext
Output modalitiestext
Open weight—
Parameters—
Architecture—
Context window164K tokens
Max input—
Max output147K tokens
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.25
Output
$0.95
Cache write
—
Cache read
$0.13
Batch in
—
Batch out
—

Family Comparison: deepseek-chat

ModelContextMax outPricing
DeepSeek: DeepSeek V3.1164K147K$0.25$0.95
DeepSeek: DeepSeek V3164K16K$0.26$1.03
DeepSeek: DeepSeek V3 0324164K115K$0.29$1.14

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 · 12 entries
deepseek/deepseek-chat-v3.1updateca7a400Nov 2, 2026, 03:02 AM
context_window32768→163840
max_output_tokens7168→147456
pricinginput$0.15→$0.25output$0.75→$0.95cached input$0.13
deepseek/deepseek-chat-v3.1updateb2f45bfOct 29, 2026, 03:29 AM
max_output_tokens32768→147456
deepseek/deepseek-chat-v3.1update165fbc2Sep 8, 2026, 06:37 AM
max_output_tokens144900→32768
pricinginput$0.55→$0.25output$1.65→$0.95cached input$0.55→$0.13
deepseek/deepseek-chat-v3.1update0d4ae28Sep 4, 2026, 06:37 AM
max_output_tokens32768→144900
pricinginput$0.25→$0.55output$0.95→$1.65cached input$0.13→$0.55
deepseek/deepseek-chat-v3.1update77b8547Sep 2, 2026, 06:42 AM
max_output_tokens144900→32768
pricinginput$0.55→$0.25output$1.65→$0.95cached input$0.55→$0.13
deepseek/deepseek-chat-v3.1updatee3d7dedAug 31, 2026, 04:13 AM
max_output_tokens32768→144900
pricinginput$0.25→$0.55output$0.95→$1.65cached input$0.13→$0.55
deepseek/deepseek-chat-v3.1update20c73acJul 17, 2026, 02:34 AM
pricinginput$0.21→$0.25output$0.79→$0.95
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