DeepSeek V4.1 Flash 1017

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, a sparse mixture-of-experts model with native image understanding and a compressed KV cache.

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input · usd / 1m tok

$0.30

output · usd / 1m tok

$1.20

context window

1.05mtokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $0.30
output: $1.20
cache read: $0.006

providers

Different companies host DeepSeek V4.1 Flash 1017. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

DeepSeek
Fireworks

specifications

takes text and image in, gives text outdeepseek/deepseek-v4.1-flash-1017

creatorDeepSeek
model typeText generation
context window1,048,576 tokens
maximum outputnot published
input
takes text and image in, gives text out
outputtext
tool callingnot verified
releasedoct 17, 2026
endpoint/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

try it · your prompt, this model, live

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="deepseek/deepseek-v4.1-flash-1017",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="deepseek/deepseek-v4.1-flash-1017",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

benchmark results are not available for this model yet.

compare DeepSeek V4.1 Flash 1017 with other models

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frequently asked questions

What is DeepSeek V4.1 Flash 1017?

DeepSeek V4.1 Flash 1017 is the October 17, 2026 snapshot of DeepSeek V4.1 Flash, a sparse mixture-of-experts model with native image understanding and a compressed KV cache. It is the cost-efficient tier of the V4.1 family, tuned over the previous Flash snapshot for coding, terminal and long-horizon agent work.

How much does DeepSeek V4.1 Flash 1017 cost?

DeepSeek V4.1 Flash 1017 costs $0.30 per million input tokens and $1.20 per million output tokens through the Impossibl API. Cache reads cost $0.006 per million tokens. All rates are in USD.

view the pricing table ↑

What is the context length of DeepSeek V4.1 Flash 1017?

DeepSeek V4.1 Flash 1017 has a 1,048,576-token context window through the Impossibl API.

What inputs and outputs does DeepSeek V4.1 Flash 1017 support?

DeepSeek V4.1 Flash 1017 accepts text and image as input. DeepSeek V4.1 Flash 1017 returns text.

How do I use DeepSeek V4.1 Flash 1017 through an API?

DeepSeek V4.1 Flash 1017 is available through the Impossibl API. Use deepseek/deepseek-v4.1-flash-1017 as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

follow the api quickstart →

When was DeepSeek V4.1 Flash 1017 released?

DeepSeek released DeepSeek V4.1 Flash 1017 on October 17, 2026.

Creator release announcement ↗

this page describes DeepSeek V4.1 Flash 1017 as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes. model descriptions and release dates, where available, use the creator sources linked under the answers above.

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