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deepseek-v4-flash-0731Sail Research Co.

in /1M$0.09input tokens
out /1M$0.18output tokens
context1.0M384K out
median ttft4.44smeasured
api
chat
hosting
US
model lab
DeepSeek
weights
open
added
July 2026
model id
sail/deepseek-v4-flash-0731

capabilities 3/8

visionreasoningtoolscachingweb searchjson schemacomputer useimage gen

8 providers serve deepseek-v4-flash-0731. This page is one of them. Compare all endpoints

pricing

no markup
input
$0.09
output
$0.18
cache write
-
cache read
$0.02

worked cost

Estimated cost for three request volumes
volumecost
100K in + 10K out$0.0108
1M in + 100K out$0.11
10M in + 1M out$1.08

Requesty charges what the upstream provider charges, with no markup and no per-request fee. Prompt caching and smart routing cut the effective cost further on repeated context. Gateway pricing

provider price, passed throughper 1M tokens

measured

through Sep 12
median ttft
4.44s
median tok/s
169.0
blended /1M
$0.05
cache hit
55.8%

Weekly aggregates from production traffic routed through Requesty to this endpoint. A metric with no qualifying sample is left out rather than filled in. Compare against the other providers

benchmarks

artificial analysis
Benchmark scores, each normalised to 100
evalScore as a share of 100/100
GPQA Diamond90.8
Coding Index69.1
SciCode50.3
Humanity's Last Exam38.6
Intelligence Index34.5
5 evalsmean56.7

Scores from Artificial Analysis and public leaderboards, normalised to 100. Bar colour is the band, not the rank: green 80 and up, blue 55 and up, amber 30 and up. Benchmarks measure narrow skills, so test on your own workload before committing. Released 2026-07-31.

policy

data terms
retention
none
trains on prompts
no
hosted in
US

Terms are the provider's, not Requesty's: routing a request here puts it under them. Sail Research Privacy Policy

Need every request to stay in one jurisdiction? EU hosting routes only through EU-hosted providers.

quickstart

openai compatible
sail/deepseek-v4-flash-0731

this id pins the sail research co. deployment, with no routing and no failover. the managed id on the canonical page routes across all 8 providers instead

main.py
from openai import OpenAI client = OpenAI(    api_key="YOUR_REQUESTY_API_KEY",    base_url="https://router.requesty.ai/v1",) response = client.chat.completions.create(    model="sail/deepseek-v4-flash-0731",    messages=[        {"role": "user", "content": "Explain quantum computing in one paragraph."},    ],) print(response.choices[0].message.content)

Change the base url to https://router.requesty.ai/v1, use your Requesty key, set the model to the id above. Existing OpenAI SDK code needs no other edit, and the same key reaches every other model in the catalog. Browse all models

notes

reference

DeepSeek V4 Flash 0731 is DeepSeek's fast, cost-efficient frontier MoE model for coding, reasoning, and agent workflows, with a 1M token context window. Served via Sail Research.

questions 6

How much does deepseek-v4-flash-0731 cost?
deepseek-v4-flash-0731 is priced at $0.09 per million input tokens and $0.18 per million output tokens when accessed via Requesty. Prompt caching is supported, which can cut effective input cost by up to 90% on repeated context. Requesty charges exactly what the upstream provider charges, we don't add markup.
What is the context window of deepseek-v4-flash-0731?
deepseek-v4-flash-0731 has a context window of 1.0M tokens, with a maximum output of 384K tokens per response. That is roughly 1,398 words of input you can fit in a single prompt.
How does deepseek-v4-flash-0731 perform on benchmarks?
deepseek-v4-flash-0731 scores 90.8% on GPQA Diamond, 69.1% on Coding Index, 50.3% on SciCode. The benchmarks pane shows every published result, each normalised to 100.
What can deepseek-v4-flash-0731 do?
deepseek-v4-flash-0731 supports tool calling, extended reasoning, prompt caching. You can call it through any OpenAI-compatible client by pointing base_url to Requesty.
How do I use deepseek-v4-flash-0731 with the OpenAI SDK?
Install the OpenAI SDK, set base_url to "https://router.requesty.ai/v1", set your API key to your Requesty key, and set the model to "sail/deepseek-v4-flash-0731". The quickstart pane shows Python, JavaScript and cURL snippets.
Can I run deepseek-v4-flash-0731 through Requesty?
Yes. deepseek-v4-flash-0731 runs through Requesty's OpenAI-compatible API, served from Sail Research Co.. You do not host the model yourself: point base_url at Requesty, set the model to "sail/deepseek-v4-flash-0731", and requests are routed to the upstream provider with automatic failover. The same key gives you 600+ other models too.

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call deepseek-v4-flash-0731 through one endpoint

One key for this endpoint and 600+ other models. No markup on provider prices, automatic failover when a provider degrades, and prompt caching built in. Methodology

deepseek-v4-flash-0731sail research co.in $0.09 /1Mout $0.18 /1Mctx 1.0Mttft 4.44shosted US8 providers serve this model