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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. It extends the DeepSeek-V3 base with a two-phase long-context...

View source on OpenRouter Hugging Face
Overview

Model specifications

Context
163,840 tokens
Maximum output
144,900 tokens
Architecture
text->text
Tokenizer
DeepSeek
Knowledge cutoff
2025-03-31
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$0.550
per 1M tokens
Output
$1.65
per 1M tokens
Cache read
$0.550
per 1M tokens
API

Model configuration

Reasoning

Moderated
No
Default parameters
No
API

Quick start

Call this exact model ID through OpenRouter’s OpenAI-compatible API.

curl https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek/deepseek-chat-v3.1","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
text
Output
text
Reasoning

No

API

Supported API parameters

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_ppresence_penaltyreasoningrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p
Available providers

8 providers

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

DeepInfra

fp4
Context
164K
Maximum output
33K
Input
$0.250
Output
$0.950
Cache read
$0.130
Cache write
Not provided

SiliconFlow

fp8
Context
164K
Maximum output
147K
Input
$0.270
Output
$1.00
Cache read
Not provided
Cache write
Not provided

Novita

fp8
Context
131K
Maximum output
33K
Input
$0.270
Output
$1.00
Cache read
$0.135
Cache write
Not provided

AtlasCloud

fp8
Context
131K
Maximum output
66K
Input
$0.300
Output
$0.950
Cache read
$0.130
Cache write
Not provided

CoreWeave

fp8
Context
161K
Maximum output
145K
Input
$0.550
Output
$1.65
Cache read
$0.550
Cache write
Not provided

Mara

unknown
Context
131K
Maximum output
118K
Input
$0.600
Output
$1.70
Cache read
Not provided
Cache write
Not provided

Google

unknown
Context
164K
Maximum output
33K
Input
$0.600
Output
$1.70
Cache read
Not provided
Cache write
Not provided

SambaNova

fp8
Context
131K
Maximum output
7K
Input
$0.650
Output
$1.50
Cache read
Not provided
Cache write
Not provided
deepseek

models

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DeepSeek: DeepSeek V4 Flash Vision Exp

DeepSeek V4 Flash Vision Exp is an experimental vision-enabled version of DeepSeek V4 Flash 0731 from DeepSeek, adding image understanding while matching the base model on text capabilities including agents,...

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Input
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DeepSeek: DeepSeek V4 Pro 0813

DeepSeek V4 Pro 0813 is a large-scale mixture-of-experts model from DeepSeek. This is the GA release of DeepSeek V4 Pro.

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Input: $1.32Output: $3.96per 1M tokens
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DeepSeek: DeepSeek V4 Pro 0813 (batch)

DeepSeek V4 Pro 0813 is a large-scale mixture-of-experts model from DeepSeek. This is the GA release of DeepSeek V4 Pro.

Context
1.0M
Input
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Output
text
Input: $1.32Output: $3.96per 1M tokens
View model details →
deepseek logodeepseek

DeepSeek: DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision is suited for coding, reasoning, and agent workflows....

Context
1.3M
Input
text
Output
text
Input: $0.065Output: $0.180per 1M tokens
View model details →