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DeepSeek V4.1 Flash
◆ OPEN
by DeepSeek
OPEN WEIGHTSLOCALFAST RESPONSESWRITING HELPCODING HELP
RANKED #24 OF 313 ASSISTANTS · OVERALL #34 OF 493 RANKED · VIBE SCORE 6.7 · 13,569 VOICES ·
COPY BADGE pastes a README snippet with the rank SVG.
A fast open model for everyday writing, coding assistance, and quick answers.
HAPPY8.6
1.1k mentions
SAD6.4
777 mentions
VIBE TRAJECTORY
26 weeks · 16,053 voices in this window
HOLDING UP
Recent vibe is steady. No clear fade in the crowd.
HOW TO USE IT
Open weights. You can use a hosted service, or download it and run it yourself, free.
RUN IT ON YOUR OWN MACHINE
Open weights: download DeepSeek V4.1 Flash once and it's yours. No subscription, no rate limits, works offline.
552B MoE parameters (16B active per token), a Q4 quantization is approximately 320 GB
- BARE MINIMUM
Too large for single consumer GPUs; minimum setup requires h
512 GB UNIFIED MEMORY / 192 GB VRAM
~$7500 USEDQ4 quant offloaded across system memory, ~4 tok/s, 8k context
- SWEET SPOT
Apple Mac Pro / Studio cluster or 8x RTX 4090 workstation
512 GB UNIFIED MEMORY / 192 GB VRAM
~$14000 NEWQ4 quant fully resident in unified memory/VRAM, ~14 tok/s, 32k context
- FULL POWER
4x NVIDIA H100 80GB SXM server node
320 GB HBM3
~$120000 NEWFP8 native precision with full 1M context support, ~65 tok/s
LEARN HOW TO SET IT UP
WILL MY BOX RUN DEEPSEEK V4.1 FLASH?
The three cards above are researched picks. Search the machine you actually have — we only say yes if it should reply at a usable speed, not just load the weights and crawl.
HARDWARE PICKS & PRICES ARE RESEARCHED FROM THE LIVE WEB AND REFRESHED AUTOMATICALLY. TREAT THEM AS BALLPARK, NOT GOSPEL.
WHAT CAN YOU ACTUALLY DO WITH IT?
Everyday jobs on each of those rigs: how long DeepSeek V4.1 Flash takes, and how good the crowd says it is at that kind of work.
| THE JOB | BARE MINIMUMToo large for single consumer GPUs; minimum setup requires h | SWEET SPOTApple Mac Pro / Studio cluster or 8x RTX 4090 workstation | FULL POWER4x NVIDIA H100 80GB SXM server node |
|---|---|---|---|
| Write an emaila paragraph or two, drafted from a one-line brief | ~2.1 MIN★★★★★ | ~36 S★★★★★ | ~8 S★★★★★ |
| Summarize a documenta long report boiled down to the points that matter | ~6.3 MIN★★★★★ | ~1.8 MIN★★★★★ | ~23 S★★★★★ |
| Build a websitea small landing page, markup and styles together | ~33 MIN★★★★★ | ~9.5 MIN★★★★★ | ~2.1 MIN★★★★★ |
| Build a backendan API with routes, storage and tests | ~1.7 HR★★★★★ | ~30 MIN★★★★★ | ~6.4 MIN★★★★★ |
| Build a gamea playable browser game in one file | ~63 MIN★★★★★ | ~18 MIN★★★★★ | ~3.8 MIN★★★★★ |
STARS ARE THE COMMUNITY SCORE FOR THAT KIND OF WORK, DOCKED FOR HOW SQUASHED THE WEIGHTS GET AT EACH TIER. TIMES ARE COMPUTED FROM RESEARCHED SPEEDS. BALLPARK, NOT GOSPEL.
WHAT THE INTERNET SAYS
Users appreciate DeepSeek V4.1 Flash for its quick speed, solid writing, and coding help at a good price. However, many complain about frequent hallucinations, overly strict refusals, and losing context during long chats.
8988 POSTS · 4581 COMMENTS · REDDIT · GITHUB · HACKER NEWS · BLUESKY · DEV.TO · LEMMY · BLOG · DEV FORUMS
PEOPLE LOVE
- Popular for coding help (63 mentions)
- People feel it is worth the money (59 mentions)
- Answers come back fast (20 mentions)
- Good at writing and wording things (8 mentions)
PEOPLE COMPLAIN ABOUT
- Refuses or lectures more than people like (77 mentions)
- Outages, errors, or limits get in the way (44 mentions)
- Sometimes makes things up (28 mentions)
- Loses the thread in long chats (5 mentions)
TOPIC BY TOPIC
- Help with codeMOSTLY POSITIVE
63 thumbs up · 30 thumbs down
- PriceMOSTLY POSITIVE
59 thumbs up · 33 thumbs down
- Saying no too muchA SORE SPOT
4 thumbs up · 77 thumbs down
- Working when you need itA SORE SPOT
7 thumbs up · 44 thumbs down
- Getting facts rightA SORE SPOT
17 thumbs up · 28 thumbs down
- SpeedMOSTLY POSITIVE
20 thumbs up · 7 thumbs down
- WritingPEOPLE LOVE THIS
8 thumbs up · 2 thumbs down
- Long conversationsA SORE SPOT
3 thumbs up · 5 thumbs down
IN THEIR OWN WORDS
- FROM REDDIT >
“🐳 DeepSeek-V4.1-Flash-1017 released: MIT weights, 1M context, and stronger coding and agent benchmark results.”
- FROM GITHUB >
“[Bug/Perf] DeepSeek-V4.1-Flash on SM120 (RTX PRO 6000 Blackwell, 8xTP): extremely low decode throughput with --enforce-eager; CUDA graphs unusable — please prioritize SM120 graph capture fix.”
- FROM REDDIT >
“Deepseek V4.1 Flash 1017 beats larger rivals in agentic tasks while once again massively cutting per-task costs.”
- FROM REDDIT >
“MiniMax M3.1 not worth it, even on peak DeepSeek v4.1 flash times..”
- FROM REDDIT >
“Xolotl (Strata based) - DeepSeek-V4.1-Flash (552B) on a single 4090 at ~27 tok/s, Uncensored 1017 quant coming in a couple of days.”
- FROM BLUESKY >
“DeepSeek V4.1 Flash : Bug fixing wins vs terminal & reasoning losses teardown 🎬 At $0.60/M tokens, DeepSeek hits 77 vs.”
- FROM REDDIT >
“Deepseek V4.1 Flash broken?.”
- FROM REDDIT >
“DeepSeek-v4.1-Flash Kept Hallucinating - Here's What Helped.”
- FROM REDDIT >
“DeepSeek V4.1 Flash: Stronger, Faster, More Accessible.”
LOOKING FOR AN ALTERNATIVE?
Checked picks first: tags say why you would switch, stars say how fully each one stands in for DeepSeek V4.1 Flash.
Gemini 3.7 Flash
Qwen3.8 Flash
Grok 4.6> SOURCES (12)
- HACKER NEWS · 2026-10-20 · 2304 UPVOTESDeepSeek just open-sourced its inference engine
DeepSeek just open-sourced its inference engine
- REDDIT · 2026-10-17 · 985 UPVOTESDeepSeek V4.1-Flash-1017 Released: Better Performance, Faster Coding, and Public Search & Fetch APIs
DeepSeek V4.1-Flash-1017 Released: Better Performance, Faster Coding, and Public Search & Fetch APIs
- HACKER NEWS · 2026-10-17 · 952 UPVOTESDeepSeek-v4.1-Flash-1017
DeepSeek-v4.1-Flash-1017
- REDDIT · 2026-09-09 · 823 UPVOTESDeepseek v4.1 Flash reaches 98% of Astra’s score at 1.4% of cost on OpenDesign Arena
Deepseek v4.1 Flash reaches 98% of Astra’s score at 1.4% of cost on OpenDesign Arena
- REDDIT · 2026-10-18 · 812 UPVOTES72 hours, four big open weights drops. The only one that fits in 24GB came from NVIDIA, of all companies.
72 hours, four big open weights drops. The only one that fits in 24GB came from NVIDIA, of all companies.
- REDDIT · 2026-10-17 · 752 UPVOTESDeepSeek-V4.1-Flash-1017 just dropped — this pricing could bring the servers to their knees
DeepSeek-V4.1-Flash-1017 just dropped — this pricing could bring the servers to their knees
- REDDIT · 2026-10-17 · 743 UPVOTESDeepSeek V4.1 Flash (1017) Now Leads Open-Weight Models
DeepSeek V4.1 Flash (1017) Now Leads Open-Weight Models
- REDDIT · 2026-10-20 · 703 UPVOTESDeepseek even opensourced their revenue per GPU per hour
Deepseek even opensourced their revenue per GPU per hour
- HACKER NEWS · 2026-10-19 · 573 UPVOTESDeepSeek banned from U.S. federal civilian agencies under new DHS order
DeepSeek banned from U.S. federal civilian agencies under new DHS order
- HACKER NEWS · 2026-10-17 · 520 UPVOTESDeepSeek: DeepSeek v4.1 Flash 1017
DeepSeek: DeepSeek v4.1 Flash 1017
- REDDIT · 2026-10-21 · 454 UPVOTESDeepSeek just revealed what 1M tokens cost at zero profit
DeepSeek just revealed what 1M tokens cost at zero profit
- REDDIT · 2026-09-10 · 436 UPVOTESGPT-6 Sol Appeared on the OpenAI API
GPT-6 Sol Appeared on the OpenAI API