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DeepSeek · Frontier models
Open-weight frontier reasoning models at a fraction of US API prices.

DeepSeek's V-series and R-series models, released with open weights and served through a very low-cost API; widely used as a drop-in for cost-sensitive workloads.

3.0(1)Free · API usage (low cost)used by 468+ StackOpen DeepSeek ↗

News · 12

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DeepSeek just open-sourced its inference enginegithub.com · Oct 20walkai-talkai: Talk to your AI coding agent over a walkie-talkieProduct Hunt · Oct 19DeepSeek banned from U.S. federal civilian agencies under new DHS orderreuters.com · Oct 19DeepSeek V4.1 Flash 1017 (Max)artificialanalysis.ai · Oct 19DeepSeek search and fetch – $0.75 per 1000 successful requestsapi-docs.deepseek.com · Oct 18

Deals · 3

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DeepSeek reportedly raises about $15B in yuan round led by CATL and TencentBloomberg via Investing.com · Oct 22Nvidia reportedly in talks to buy open-weight model maker Reflection AI or expand its stakeReuters · Oct 10DeepSeek reportedly raising more than $11.9B at a $74B valuation, led by Tencent and CATLReuters · Oct 6

Research · 0

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What worked, what broke · 1 review

3.0
out of 5
100% would recommend it
@sammyharrison58
Sammy HarrisonOct 2026 · 4 months in
Senior System Engineer at Harris Apex · $0–$100K ARR
Worked: Impressive coding and reasoning ability for the cost. Strong open models.
Broke: Less polished experience compared to the top closed models.
Would recommend
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Who uses DeepSeek · 458

Members with DeepSeek in their stack. Ask one for a reference call before you buy; the ask lands in their AI Lounge inbox in your words.
@ezhil
Ezhilarasan Natarajan$25M–$100M ARR
Founder, Chairman and CEO · CoreStack · Seattle
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@nevoalm
Nevo Elmalem$25M–$100M ARR
Founder & CTO · Sensi AI · Austin
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@sudhir-nambiar
Sudhir Nambiar$10M–$25M ARR
Founder & CEO · Stratapps · Fremont
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@jlarrison
Jim Larrison$10M–$25M ARR
Founder & President · Larridin, Inc. · Scottsdale
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@spartane.ai
Victor Contreras$10M–$25M ARR
Founder & CEO · Spartane AI · Merlo
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@kirk-baird
Kirk Baird$10M–$25M ARR
Executive Director · Sigma Prime · Sydney
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@sergous
Sergous Peace$3M–$10M ARR
Founder and CEO · ANUKA · Miami
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@igushev
Edward Igushev$3M–$10M ARR
Co-Founder & CTO · Created by Humans · San Francisco
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@pphilip
Philip Petrescu$3M–$10M ARR
CEO and Co-founder · Caphyon · Craiova
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@kevinyunai
Kevin Yunai$3M–$10M ARR
Founder · RWA Inc · Copenhagen
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@bala
Balaji Varadharajan$3M–$10M ARR
Founder · Tequity.tech · San Francisco
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@felipetjmg1-bit
Felipe Marcos de Abreu Aquino$1M–$3M ARR
CEO fundador · Impulso Digital · Brasília
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@paoloscagliola
Paolo Scagliola$1M–$3M ARR
Chief Operations Officer and co-founder · Dicto AI · Turin
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@jordhy
Jordhy Ledesma$1M–$3M ARR
Founder · Leslor Information Providers · Pittsburgh
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@adamcrow64
Adam Crow$1M–$3M ARR
Chief Executive Officer · Crowtech Pty Ltd · Melbourne
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@stardraw
David Snipp$1M–$3M ARR
Founder & CTO · Stardraw.com Ltd · London
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@jeremyvincenexdiscovery
Jeremy Vince$1M–$3M ARR
Founder · NexDiscovery · San Francisco
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@dirk
Dirk Neumann$1M–$3M ARR
Founder & CEO · Brisken · Houston
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@b.parker
Brad Parker$1M–$3M ARR
Founder · FormPiper · Atlanta
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@nxt
Jonathan Pieterse$1M–$3M ARR
CEO, Founder · NXT Horizon · Buckingham
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+438 more.

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25:04DeepSeek-V4.1 Flash: The Most Insane Optimization So Far
Frontier models