DeepSeek V4.1 Flash vs Muse Spark Open 816B A42B

DeepSeek V4.1 Flash and Muse Spark Open 816B A42B match in llmrun Score, with values of 129.1 versus 128.7; neither fits 24 GB.

Model A · DeepSeek

DeepSeek V4.1 Flash

129.1llmrun Score

763.2B · 188B active · 1M context · MIT · Sep 2026

VisionFunctions

Model B · Meta

Muse Spark Open 816B A42B

128.7llmrun Score

822.0B · 42B active · Other · Sep 2026

Vision

Which should you choose?

Choose DeepSeek V4.1 Flash if you want…

Lighter on memory
458.3 vs 542.5 GB at Q4_K_M
Also does function-calling
Muse Spark Open 816B A42B doesn't list it
More permissive license
MIT vs Other

Muse Spark Open 816B A42B: no clear edge over DeepSeek V4.1 Flash in the data we have.

On your hardware

Each model at its default quant (Q4_K_M), a smaller one when it must. Estimates, ±20%.

MemoryDeepSeek V4.1 FlashMuse Spark Open 816B A42B

8 GB

RTX 4060 · 8 GB tier

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

12 GB

RTX 3060 12GB · 12 GB tier

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

16 GB

RTX 5060 Ti 16GB · 16 GB tier

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

24 GBreference

RTX 4090 · 24 GB tier

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

32 GB

RTX 5090 · 32 GB tier

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

48 GB

RTX A6000 · 48 GB tier

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

Mac 32 GB

Mac Mini M4 · Macs

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

Mac 64 GB

Mac Studio M4 Max · Macs

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

Mac 128 GB

Mac Studio M4 Max · Macs

DeepSeek V4.1 Flash

Doesn't fit

smallest quant needs 210.4 GB

Muse Spark Open 816B A42B

Doesn't fit

smallest quant needs 258.1 GB

Reference GPU: RTX 4090. Tinted cell = the better pick on that machine (fits, more headroom, or at least 10% faster).

llmrun Score

with its 90% range · bars share one scale

DeepSeek V4.1 Flash Muse Spark Open 816B A42B

Overall

DeepSeek V4.1 Flash

129.1127–131

Muse Spark Open 816B A42B

128.7125–132

Coding

DeepSeek V4.1 Flash

119.0113–125

Muse Spark Open 816B A42B

no data

Math

DeepSeek V4.1 Flash

129.0127–132

Muse Spark Open 816B A42B

128.4125–132

Science

DeepSeek V4.1 Flash

122.9111–135

Muse Spark Open 816B A42B

no data

Reasoning

DeepSeek V4.1 Flash

133.0129–137

Muse Spark Open 816B A42B

no data

DeepSeek V4.1 Flash · #6 of 94 open models · #4 of 90 that fit ≤512 GB

Muse Spark Open 816B A42B · #7 of 94 open models · #5 of 90 that fit ≤640 GB

Benchmarks

6 shared boards: DeepSeek V4.1 Flash leads 2, Muse Spark Open 816B A42B leads 3 · Benchmarks imported Oct 2026

BoardDeepSeek V4.1 FlashMuse Spark Open 816B A42B

GPQA Diamond

DeepSeek V4.1 Flash

89.8%#11/98 open

IndependentEpoch AI · Sep 2026

Muse Spark Open 816B A42B

88.6%#12/98 open

IndependentEpoch AI · Oct 2026

AIME 2024/2025

DeepSeek V4.1 Flash

98.3%#2/86 open

IndependentEpoch AI · Sep 2026

Muse Spark Open 816B A42B

98.1%#3/86 open

IndependentEpoch AI · Oct 2026

FrontierMath

DeepSeek V4.1 Flash

67.4%#4/17 open

IndependentEpoch AI · Sep 2026

Muse Spark Open 816B A42B

69.8%#2/17 open

IndependentEpoch AI · Oct 2026

LMArena WebDev

DeepSeek V4.1 Flash

1618.4#7/52 open

ArenaLMArena · Oct 2026

Muse Spark Open 816B A42B

1511.3#13/52 open

ArenaLMArena · Oct 2026

SimpleQA

DeepSeek V4.1 Flash

42.9%#5/17 open

IndependentEpoch AI · Sep 2026

Muse Spark Open 816B A42B

56.6%#1/17 open

IndependentEpoch AI · Oct 2026

FrontierMath Tier 4

DeepSeek V4.1 Flash

26.8%#5/13 open

IndependentEpoch AI · Sep 2026

Muse Spark Open 816B A42B

31.7%#2/13 open

IndependentEpoch AI · Oct 2026

17 more boards (other shared and single-model boards)

Only DeepSeek V4.1 Flash (17)

VRAM by quantization

Memory to load the model and 2K context; below it, the total at 32K and 128K context. Lighter side in bold.

QuantDeepSeek V4.1 FlashMuse Spark Open 816B A42B

Q2_K

DeepSeek V4.1 Flash

325 GB264.5 GB file

32K 325 GB · 128K 326 GB

Muse Spark Open 816B A42B

384 GB304.1 GB file

32K 404 GB · 128K 469 GB

Q3_K_M

DeepSeek V4.1 Flash

372 GB347.3 GB file

32K 373 GB · 128K 374 GB

Muse Spark Open 816B A42B

441 GB~400.7 GB file

32K 461 GB · 128K 525 GB

Q4_0

DeepSeek V4.1 Flash

not listed

Muse Spark Open 816B A42B

452 GB466.3 GB file

32K 472 GB · 128K 537 GB

Q4_K_M

DeepSeek V4.1 Flash

458 GB444.7 GB file

32K 459 GB · 128K 460 GB

Muse Spark Open 816B A42B

543 GB~493.2 GB file

32K 563 GB · 128K 627 GB

Q5_K_M

DeepSeek V4.1 Flash

544 GB~543.8 GB file

32K 545 GB · 128K 546 GB

Muse Spark Open 816B A42B

644 GB~585.7 GB file

32K 664 GB · 128K 729 GB

Q6_K

DeepSeek V4.1 Flash

630 GB~629.6 GB file

32K 630 GB · 128K 632 GB

Muse Spark Open 816B A42B

746 GB~678.2 GB file

32K 766 GB · 128K 831 GB

Q8_0

DeepSeek V4.1 Flash

764 GB508.0 GB file

32K 764 GB · 128K 765 GB

Muse Spark Open 816B A42B

904 GB871.6 GB file

32K 924 GB · 128K 989 GB

6 more quants

IQ2_XXS

DeepSeek V4.1 Flash

210 GB~209.9 GB file

32K 211 GB · 128K 212 GB

Muse Spark Open 816B A42B

249 GB225.6 GB file

32K 269 GB · 128K 333 GB

IQ2_S

DeepSeek V4.1 Flash

not listed

Muse Spark Open 816B A42B

283 GB275.5 GB file

32K 303 GB · 128K 367 GB

IQ3_XXS

DeepSeek V4.1 Flash

not listed

Muse Spark Open 816B A42B

350 GB340.4 GB file

32K 371 GB · 128K 435 GB

IQ3_XS

DeepSeek V4.1 Flash

315 GB434.0 GB file

32K 316 GB · 128K 317 GB

Muse Spark Open 816B A42B

not listed

Q4_K_S

DeepSeek V4.1 Flash

not listed

Muse Spark Open 816B A42B

509 GB470.1 GB file

32K 529 GB · 128K 593 GB

BF16

DeepSeek V4.1 Flash

1527 GB~1526.4 GB file

32K 1527 GB · 128K 1528 GB

Muse Spark Open 816B A42B

1808 GB1640.3 GB file

32K 1829 GB · 128K 1893 GB

How to run each

DeepSeek V4.1 Flash

Ollama · Q4_K_M

$ollama run hf.co/vcruz305/DeepSeek-V4.1-Flash-GGUF:Q4_K_M

All ways to run DeepSeek V4.1 Flash →

Muse Spark Open 816B A42B

Ollama · Q4_K_M

$ollama run hf.co/unsloth/Muse-Spark-Open-816B-A42B-GGUF

All ways to run Muse Spark Open 816B A42B →

Specifications

Specifications of DeepSeek V4.1 Flash and Muse Spark Open 816B A42B
Spec	DeepSeek V4.1 Flash	Muse Spark Open 816B A42B
Publisher	DeepSeek	Meta
Parameters	763.2B	822.0B
Active parameters	188B per token	42B per token
Architecture	DeepseekV41ForCausalLM	—
Context	1M tokens	—
Modalities	Vision, Function-calling	Vision
License	MIT	Other
Released	Sep 2026	Sep 2026

Frequently Asked Questions

Which is better, DeepSeek V4.1 Flash or Muse Spark Open 816B A42B?

DeepSeek V4.1 Flash and Muse Spark Open 816B A42B match in llmrun Score, with values of 129.1 versus 128.7; neither fits 24 GB. Choose DeepSeek V4.1 Flash for lighter on memory and also does function-calling.

Which needs less VRAM, DeepSeek V4.1 Flash or Muse Spark Open 816B A42B?

At Q4_K_M, DeepSeek V4.1 Flash requires 458.3 GB while Muse Spark Open 816B A42B needs 542.5 GB, making DeepSeek V4.1 Flash the easier model to run on your local setup.

Can I run DeepSeek V4.1 Flash or Muse Spark Open 816B A42B on a 16 GB GPU?

DeepSeek V4.1 Flash does not fit (smallest quant needs 210.4 GB); Muse Spark Open 816B A42B does not fit (smallest quant needs 258.1 GB).