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DeepSeek: DeepSeek V4 Flash 0731

Source description (English)

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....

View source on OpenRouter Hugging Face
Overview

Model specifications

Context
1,048,576 tokens
Maximum output
131,072 tokens
Architecture
text->text
Tokenizer
DeepSeek
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

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

Input
$0.44
per 1M tokens
Output
$1.32
per 1M tokens
Cache read
$0.014
per 1M tokens
API

Model configuration

Reasoning

Reasoning required
No
Default parameters
high
Capabilities
max, high, low, none
API

Quick start

Set OPENROUTER_API_KEY locally. Python requires requests; JavaScript runs in Node.js. Keep the key on the server.

API documentation

curl --fail-with-body https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"deepseek/deepseek-v4-flash-0731","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

Input → Output

Input
text
Output
text
Reasoning

Yes · max · high · low · none

API

Supported API parameters

frequency_penaltyinclude_reasoninglogit_biaslogprobsmax_tokensmin_pparallel_tool_callspresence_penaltyreasoningreasoning_effortrepetition_penaltyresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_atop_ktop_logprobstop_p
Available providers

25 providers

Checked: October 26, 2026

Live providers on OpenRouter

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

OpenRouter

Relace

fp4
Context
1.0M
Maximum output
944K
Input
$0.0475
Output
$0.1637
Cache read
$0.028
Cache write
Not provided

Reka

Not provided
Context
262K
Maximum output
131K
Input
$0.05
Output
$0.528
Cache read
$0.02
Cache write
Not provided

DeepInfra

fp8
Context
1.0M
Maximum output
384K
Input
$0.06
Output
$0.18
Cache read
$0.015
Cache write
Not provided

StreamLake

fp8
Context
1.0M
Maximum output
384K
Input
$0.088
Output
$0.264
Cache read
$0.0028
Cache write
Not provided

Inceptron

fp4
Context
1.0M
Maximum output
944K
Input
$0.11
Output
$0.4125
Cache read
$0.027
Cache write
Not provided

DigitalOcean

Not provided
Context
1.0M
Maximum output
944K
Input
$0.119
Output
$0.238
Cache read
$0.0238
Cache write
Not provided

Wafer

nvfp4
Context
1.0M
Maximum output
944K
Input
$0.13
Output
$0.23
Cache read
$0.125
Cache write
Not provided

BaseTen

fp8
Context
1.0M
Maximum output
384K
Input
$0.13
Output
$0.26
Cache read
$0.028
Cache write
Not provided

BaseTen

fp32
Context
1.0M
Maximum output
384K
Input
$0.13
Output
$0.26
Cache read
$0.028
Cache write
Not provided

Venice

Not provided
Context
1M
Maximum output
33K
Input
$0.13
Output
$0.26
Cache read
$0.028
Cache write
Not provided

CoreWeave

fp8
Context
262K
Maximum output
236K
Input
$0.13
Output
$0.28
Cache read
$0.07
Cache write
Not provided

Cohere

Not provided
Context
1.0M
Maximum output
384K
Input
$0.14
Output
$0.28
Cache read
$0.07
Cache write
Not provided

Parasail

fp8
Context
1.0M
Maximum output
944K
Input
$0.14
Output
$0.28
Cache read
$0.05
Cache write
Not provided

Sail Research

fp4
Context
1.0M
Maximum output
944K
Input
$0.15
Output
$0.15
Cache read
$0.042
Cache write
Not provided

Sail Research

fp4
Context
1.0M
Maximum output
944K
Input
$0.15
Output
$0.15
Cache read
$0.042
Cache write
Not provided

Mancer 2

fp8
Context
1.0M
Maximum output
944K
Input
$0.2
Output
$0.6
Cache read
Not provided
Cache write
Not provided

SiliconFlow

fp8
Context
1.0M
Maximum output
393K
Input
$0.22
Output
$0.66
Cache read
$0.028
Cache write
Not provided

GMICloud

fp8
Context
1.0M
Maximum output
944K
Input
$0.286
Output
$0.858
Cache read
$0.0091
Cache write
Not provided

Phala

Not provided
Context
1.0M
Maximum output
393K
Input
$0.308
Output
$0.924
Cache read
$0.0196
Cache write
Not provided

Alibaba

Not provided
Context
1M
Maximum output
393K
Input
$0.352
Output
$1.056
Cache read
$0.0352
Cache write
Not provided

Alibaba

Not provided
Context
1M
Maximum output
393K
Input
$0.374
Output
$1.122
Cache read
$0.0374
Cache write
Not provided

Novita

fp8
Context
1.0M
Maximum output
393K
Input
$0.4092
Output
$1.2276
Cache read
$0.026
Cache write
Not provided

Baidu

fp8
Context
1.0M
Maximum output
131K
Input
$0.44
Output
$1.32
Cache read
$0.014
Cache write
Not provided

AtlasCloud

fp4
Context
1.0M
Maximum output
393K
Input
$0.44
Output
$1.32
Cache read
$0.028
Cache write
Not provided

Cloudflare

Not provided
Context
1.0M
Maximum output
944K
Input
$0.44
Output
$1.32
Cache read
$0.014
Cache write
Not provided
deepseek

4 models

All models
deepseek logodeepseek

DeepSeek: DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, served by DeepSeek under the deepseek-flash API model name. V4.1 Flash is a sparse mixture-of-experts model...

Context
1.0M
Input
text · image
Output
text
Input: $0.15Output: $0.6per 1M tokens
View model details →
deepseek logodeepseek

DeepSeek: DeepSeek V4.1 Flash

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...

Context
1.0M
Input
text · image
Output
text
Input: $0.02Output: $1per 1M tokens
View model details →
deepseek logodeepseek

DeepSeek: DeepSeek V4.1 Flash (batch)

DeepSeek V4.1 Flash is a sparse mixture-of-experts model from DeepSeek, and the first built on the company's Causal Encoder-Decoder (CED) architecture. It activates 8B parameters on input and 16B on...

Context
1.0M
Input
text · image
Output
text
Input: $0.05Output: $0.15per 1M tokens
View model details →
deepseek logodeepseek

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,...

Context
1.0M
Input
text · image
Output
text
Input: $0.2156Output: $0.6468per 1M tokens
View model details →