DeepSeek V4.1 Flash

By DeepSeek. 3 results on 3 boards, copied as published. Different boards, different metrics: don't add them up.

License (as listed)MIT

Hosting regionNot confirmed

Boards3

Code

No result on the boards we captured

Agentic / terminal

No result on the boards we captured

Websites

1619LMArena WebDev Arena
deepseek-v4.1-flash-max · Arena score · board #27
LMArena WebDev (agentic front-end tasks) · as of 2026-10-22 ↗
84.74%Vals AI Vibe Code Bench v1.1
DeepSeek V4.1 Flash · Score % · board #17
OpenHands · as of 2026-10-20 ↗

Design

1318Design Arena (All categories)
deepseek-v4-1-flash · Elo · board #14
Design Arena · as of 2026-10-24 ↗

Android

No result on the boards we captured

iOS

No mature public leaderboard

Available in

No plan row in our pricing data names this model version.

Use cases with this model

OpenCodeDeepSeek V4.1 Flash

"I built a 3D BMW M5 with AI for $0.00 … Model: DeepSeek V4.1 Flash - Tool: OpenCode - Total tokens: 76K - Cost: $0.00"

Builder: @zazzy_stardust
Posted: Oct 15, 2026
Plan: —
Cost: In tool range

DesignRead the post

x.com · link re-checked 2026-10-16

Kimi K3GLM-5.3Qwen 3.8 Max+2Model test

Test: "Qwen 3.8 Max (max): 25.7 - DeepSeek V4.1 Flash (max): 21.7 - Kimi K3 (default): 23 - GLM-5.3 (max): 19 - Mistral Large 4 (high, its max): 15"

Builder: @PawelHuryn
Posted: Oct 7, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

Claude CodeClaude Opus 5.5DeepSeek V4.1 Flash

Pointed Claude Code at self-hosted DeepSeek V4.1 Flash on 4x H200 to replace Opus; measured speed and cost

Builder: Jason Shouldice
Posted: Sep 27, 2026
Plan: Claude Code plans; 4x H200
Cost: Stated: $9.19/h" box; Claude "about $1 per merged change"; DeepSeek "$1.15-$4" per shipped change

CodeRead the post

dev.to · web source · link re-checked 2026-10-16

DeepSeek V4.1 FlashGemini 3.8 FlashMuse Spark 1.3

Counter-datapoint: "Muse Spark 1.3 and Gemini 3.8 Flash completely failed on this same exact prompt" (Minecraft one-shot)

Builder: @bridgemindai
Posted: Sep 10, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

Same family: DeepSeek 13

DeepSeek family

An inventor's attic workshop as a full three.js scene, "all one-shot"

Builder: @ItsmeAjayKV
Posted: Oct 13, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

x.com · link re-checked 2026-10-16

DeepSeek V4 ProGLM 5.3GPT-6 Astra+5

Same 3D prompt one-shot across 8 models incl. Mistral Large 4

Builder: @domsilvestre
Posted: Oct 6, 2026
Plan: —
Cost: Not disclosed

DesignRead the post

x.com · link re-checked 2026-10-16

DeepSeek family

"$460 in tokens → ~$22K in bounties" from multi-model hackbots on open-weight models, #1 on a HackerOne leaderboard

Builder: @_jensec
Posted: Oct 3, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

DeepSeek family

"I built a working AI agent in 1.5 hours for $0.49" (Pieni; DeepSeek among supported backends)

Builder: @KuittinenPetri
Posted: Oct 2, 2026
Plan: —
Cost: Not disclosed

CodeRead the post

x.com · link re-checked 2026-10-16

DeepSeek V4 Flash

25 engineers used self-hosted DeepSeek V4 Flash for a month (~12.9B tokens) through their usual coding tools

Builder: Karim Jedda
Posted: Sep 23, 2026
Plan: DeepSeek V4 Flash
Cost: Stated: ~$1200 in GPU compute over a month

CodeRead the post

parity.io · web source · link re-checked 2026-10-16

All 13 DeepSeek use cases →

Sources

lmarena.ai/leaderboard/webdev vals.ai/benchmarks/vibe-code designarena.ai/leaderboard

DeepSeek V4.1 Flash

Available in

Use cases with this model

"I built a 3D BMW M5 with AI for $0.00 … Model: DeepSeek V4.1 Flash - Tool: OpenCode - Total tokens: 76K - Cost: $0.00"

Test: "Qwen 3.8 Max (max): 25.7 - DeepSeek V4.1 Flash (max): 21.7 - Kimi K3 (default): 23 - GLM-5.3 (max): 19 - Mistral Large 4 (high, its max): 15"

Pointed Claude Code at self-hosted DeepSeek V4.1 Flash on 4x H200 to replace Opus; measured speed and cost

Counter-datapoint: "Muse Spark 1.3 and Gemini 3.8 Flash completely failed on this same exact prompt" (Minecraft one-shot)

Same family: DeepSeek 13

An inventor's attic workshop as a full three.js scene, "all one-shot"

Same 3D prompt one-shot across 8 models incl. Mistral Large 4

Self-playing Flappy Bird and Missile Command games, each one-shot in a single HTML file, comparing 4 open models

"$460 in tokens → ~$22K in bounties" from multi-model hackbots on open-weight models, #1 on a HackerOne leaderboard

"I built a working AI agent in 1.5 hours for $0.49" (Pieni; DeepSeek among supported backends)

25 engineers used self-hosted DeepSeek V4 Flash for a month (~12.9B tokens) through their usual coding tools

Sources

The weekly diff