DeepSeek V4.1 Flash vs NVIDIA Nemotron 3 Ultra 550B A55B BF16
DeepSeek V4.1 Flash leads llmrun Score 129.5 to 109.9; neither fits 24 GB.
Model A · DeepSeek
DeepSeek V4.1 Flash763.2B · 188B active · 1M context · MIT · Sep 2026
Model B · NVIDIA
NVIDIA Nemotron 3 Ultra 550B A55B BF16560.5B · 57B active · 256K context · Other · Jun 2026
Choose DeepSeek V4.1 Flash if you want…
Higher llmrun Score
129.5 vs 109.9
Stronger at agents
127.9 vs 102.1
Stronger at coding
122.2 vs 104.0
Ahead on the benchmarks
15 of 16 shared boards
Longer context window
1M vs 256K tokens
Also does vision
NVIDIA Nemotron 3 Ultra 550B A55B BF16 doesn't list it
Choose NVIDIA Nemotron 3 Ultra 550B A55B BF16 if you want…
Lighter on memory
370.0 vs 458.3 GB at Q4_K_M
Also does chat
DeepSeek V4.1 Flash doesn't list it
On your hardware
Each model at its default quant (Q4_K_M), a smaller one when it must. Estimates, ±20%.
8 GB
RTX 4060 · 8 GB tier
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
12 GB
RTX 3060 12GB · 12 GB tier
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
16 GB
RTX 5060 Ti 16GB · 16 GB tier
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
24 GBreference
RTX 4090 · 24 GB tier
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
32 GB
RTX 5090 · 32 GB tier
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
48 GB
RTX A6000 · 48 GB tier
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
Mac 32 GB
Mac Mini M4 · Macs
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
Mac 64 GB
Mac Studio M4 Max · Macs
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
Mac 128 GB
Mac Studio M4 Max · Macs
DeepSeek V4.1 Flash
Doesn't fit
smallest quant needs 210.4 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
Reference GPU: RTX 4090. Tinted cell = the better pick on that machine (fits, more headroom, or at least 10% faster).
Overall
DeepSeek V4.1 Flash
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Coding
DeepSeek V4.1 Flash
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Agents
DeepSeek V4.1 Flash
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Math
DeepSeek V4.1 Flash
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Science
DeepSeek V4.1 Flash
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Reasoning
DeepSeek V4.1 Flash
NVIDIA Nemotron 3 Ultra 550B A55B BF16
DeepSeek V4.1 Flash · #5 of 100 open models · #4 of 96 that fit ≤512 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16 · #26 of 100 open models · #23 of 96 that fit ≤512 GB
Benchmarks
16 shared boards: DeepSeek V4.1 Flash leads 15, NVIDIA Nemotron 3 Ultra 550B A55B BF16 leads 0 · Benchmarks imported Oct 2026
DeepSeek V4.1 Flash
89.8%#11/98 open
IndependentEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
85.4%#20/98 open
IndependentEpoch AI · Jun 2026
DeepSeek V4.1 Flash
80.0#2/19 open
IndependentLiveBench · Jun 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
70.7#15/19 open
IndependentLiveBench · Jun 2026
DeepSeek V4.1 Flash
86.7#3/19 open
IndependentLiveBench · Jun 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
74.7#16/19 open
IndependentLiveBench · Jun 2026
DeepSeek V4.1 Flash
98.3%#2/86 open
IndependentEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
86.7%#18/86 open
IndependentEpoch AI · Jun 2026
DeepSeek V4.1 Flash
93.3#2/19 open
IndependentLiveBench · Jun 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
88.7#6/19 open
IndependentLiveBench · Jun 2026
DeepSeek V4.1 Flash
51.8%#5/66 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
40.3%#29/66 open
Lab-reportedEpoch AI · Jun 2026
DeepSeek V4.1 Flash
43.9%#2/12 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
13.6%#12/12 open
Lab-reportedEpoch AI · Jun 2026
DeepSeek V4.1 Flash
39.5%#9/16 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
22.7%#14/16 open
Lab-reportedEpoch AI · Jun 2026
DeepSeek V4.1 Flash
14.3%#8/66 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
3.1%#24/66 open
Lab-reportedEpoch AI · Jun 2026
DeepSeek V4.1 Flash
89.9%#8/68 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
90.1%#7/68 open
Lab-reportedEpoch AI · Jun 2026
22 more boards (other shared and single-model boards)
DeepSeek V4.1 Flash
85.4#2/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
43.6#13/15 open
IndependentLiveBench · Sep 2026
DeepSeek V4.1 Flash
43.8#2/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
11.2#14/15 open
IndependentLiveBench · Sep 2026
DeepSeek V4.1 Flash
86.7#2/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
74.7#11/15 open
IndependentLiveBench · Sep 2026
DeepSeek V4.1 Flash
47.0%#3/54 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
36.9%#13/54 open
Lab-reportedEpoch AI · Jun 2026
DeepSeek V4.1 Flash
43.0%#1/18 open
IndependentEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
20.0%#7/18 open
IndependentEpoch AI · Jun 2026
DeepSeek V4.1 Flash
54.0%#6/26 open
Lab-reportedEpoch AI · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
2.0%#23/26 open
Lab-reportedEpoch AI · Jun 2026
DeepSeek V4.1 Flash
1474.6#5/187 open
ArenaLMArena · Oct 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
1426.0#27/187 open
ArenaLMArena · Oct 2026
DeepSeek V4.1 Flash
80.0#3/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
0.0#14/15 open
IndependentLiveBench · Sep 2026
DeepSeek V4.1 Flash
79.3#2/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
54.5#13/15 open
IndependentLiveBench · Sep 2026
DeepSeek V4.1 Flash
77.0#5/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
58.6#12/15 open
IndependentLiveBench · Sep 2026
DeepSeek V4.1 Flash
85.3#1/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
43.2#14/15 open
IndependentLiveBench · Sep 2026
Only DeepSeek V4.1 Flash (10)
- FrontierMath67.4%
- LMArena WebDev1618.4
- ARC-AGI-272.9%
- ARC-AGI94.5%
- SimpleQA42.9%
- FrontierMath Tier 426.8%
- Chess Puzzles48.0%
- Furniture Assembly34.2%
- ALE-Bench1092.3
- Surface Evolver Bench46.3%
Only NVIDIA Nemotron 3 Ultra 550B A55B BF16 (1)
- WeirdML43.5%
VRAM by quantization
Memory to load the model and 2K context; below it, the total at 32K and 128K context. Lighter side in bold.
Q2_K
DeepSeek V4.1 Flash
325 GB264.5 GB file
32K 325 GB · 128K 326 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
262 GB~238.2 GB file
32K 280 GB · 128K 338 GB
Q3_K_M
DeepSeek V4.1 Flash
372 GB347.3 GB file
32K 373 GB · 128K 374 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
301 GB274.0 GB file
32K 319 GB · 128K 376 GB
Q4_K_M
DeepSeek V4.1 Flash
458 GB444.7 GB file
32K 459 GB · 128K 460 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
370 GB359.2 GB file
32K 388 GB · 128K 446 GB
Q5_K_M
DeepSeek V4.1 Flash
544 GB~543.8 GB file
32K 545 GB · 128K 546 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
439 GB426.5 GB file
32K 457 GB · 128K 515 GB
Q6_K
DeepSeek V4.1 Flash
630 GB~629.6 GB file
32K 630 GB · 128K 632 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
509 GB460.7 GB file
32K 527 GB · 128K 585 GB
Q8_0
DeepSeek V4.1 Flash
764 GB508.0 GB file
32K 764 GB · 128K 765 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
617 GB584.3 GB file
32K 635 GB · 128K 692 GB
11 more quants
IQ2_XXS
DeepSeek V4.1 Flash
210 GB~209.9 GB file
32K 211 GB · 128K 212 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
170 GB193.8 GB file
32K 188 GB · 128K 245 GB
IQ2_XS
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
185 GB169.5 GB file
32K 203 GB · 128K 261 GB
IQ2_M
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
208 GB194.0 GB file
32K 226 GB · 128K 284 GB
IQ3_XXS
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
239 GB223.3 GB file
32K 257 GB · 128K 315 GB
IQ3_XS
DeepSeek V4.1 Flash
315 GB434.0 GB file
32K 316 GB · 128K 317 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
not listed
IQ3_S
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
262 GB250.5 GB file
32K 280 GB · 128K 338 GB
IQ4_XS
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
331 GB286.1 GB file
32K 349 GB · 128K 407 GB
IQ4_NL
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
347 GB294.2 GB file
32K 365 GB · 128K 423 GB
Q4_K_S
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
347 GB327.7 GB file
32K 365 GB · 128K 423 GB
Q5_K_S
DeepSeek V4.1 Flash
not listed
NVIDIA Nemotron 3 Ultra 550B A55B BF16
424 GB391.7 GB file
32K 442 GB · 128K 500 GB
BF16
DeepSeek V4.1 Flash
1527 GB~1526.4 GB file
32K 1527 GB · 128K 1528 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
1233 GB1099.0 GB file
32K 1251 GB · 128K 1309 GB
DeepSeek V4.1 Flash
Ollama · Q4_K_M
ollama run hf.co/vcruz305/DeepSeek-V4.1-Flash-GGUF:Q4_K_MNVIDIA Nemotron 3 Ultra 550B A55B BF16
Ollama · Q4_K_M
ollama run hf.co/unsloth/NVIDIA-Nemotron-3-Ultra-550B-A55B-GGUF:Q4_K_M| Spec | DeepSeek V4.1 Flash | NVIDIA Nemotron 3 Ultra 550B A55B BF16 |
|---|---|---|
| Publisher | DeepSeek | NVIDIA |
| Parameters | 763.2B | 560.5B |
| Active parameters | 188B per token | 57B per token |
| Architecture | DeepseekV41ForCausalLM | NemotronHForCausalLM |
| Context | 1M tokens | 256K tokens |
| Modalities | Vision, Function-calling | Chat, Function-calling |
| License | MIT | Other |
| Released | Sep 2026 | Jun 2026 |
Frequently Asked Questions
Which is better, DeepSeek V4.1 Flash or NVIDIA Nemotron 3 Ultra 550B A55B BF16?
DeepSeek V4.1 Flash leads llmrun Score 129.5 to 109.9; neither fits 24 GB. Choose DeepSeek V4.1 Flash for higher llmrun Score and stronger at agents; choose NVIDIA Nemotron 3 Ultra 550B A55B BF16 for lighter on memory and also does chat.
Which needs less VRAM, DeepSeek V4.1 Flash or NVIDIA Nemotron 3 Ultra 550B A55B BF16?
At Q4_K_M, DeepSeek V4.1 Flash requires 458.3 GB while NVIDIA Nemotron 3 Ultra 550B A55B BF16 needs 370.0 GB, making NVIDIA Nemotron 3 Ultra 550B A55B BF16 the easier model to run on your local setup.
Can I run DeepSeek V4.1 Flash or NVIDIA Nemotron 3 Ultra 550B A55B BF16 on a 16 GB GPU?
DeepSeek V4.1 Flash does not fit (smallest quant needs 210.4 GB); NVIDIA Nemotron 3 Ultra 550B A55B BF16 does not fit (smallest quant needs 178 GB).
Which has a longer context window, DeepSeek V4.1 Flash or NVIDIA Nemotron 3 Ultra 550B A55B BF16?
DeepSeek V4.1 Flash supports 1,048,576 tokens and NVIDIA Nemotron 3 Ultra 550B A55B BF16 supports 262,144 tokens.