NVIDIA Nemotron 3 Ultra 550B A55B BF16 vs GLM 5.3
GLM 5.3 leads llmrun Score 130.1 to 109.9; neither fits 24 GB.
Model A · NVIDIA
NVIDIA Nemotron 3 Ultra 550B A55B BF16560.5B · 57B active · 256K context · Other · Jun 2026
Model B · Z.ai
GLM 5.3753.3B · 41.8B active · 1M context · Other · Aug 2026
Choose NVIDIA Nemotron 3 Ultra 550B A55B BF16 if you want…
Lighter on memory
370.0 vs 456.2 GB at Q4_K_M
Choose GLM 5.3 if you want…
Higher llmrun Score
130.1 vs 109.9
Stronger at agents
133.4 vs 102.1
Stronger at coding
130.1 vs 104.0
Ahead on the benchmarks
15 of 17 shared boards
Longer context window
1M vs 256K tokens
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
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
12 GB
RTX 3060 12GB · 12 GB tier
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
16 GB
RTX 5060 Ti 16GB · 16 GB tier
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
24 GBreference
RTX 4090 · 24 GB tier
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
32 GB
RTX 5090 · 32 GB tier
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
48 GB
RTX A6000 · 48 GB tier
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
Mac 32 GB
Mac Mini M4 · Macs
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
Mac 64 GB
Mac Studio M4 Max · Macs
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
Mac 128 GB
Mac Studio M4 Max · Macs
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Doesn't fit
smallest quant needs 178 GB
GLM 5.3
Doesn't fit
smallest quant needs 256 GB
Reference GPU: RTX 4090. Tinted cell = the better pick on that machine (fits, more headroom, or at least 10% faster).
Overall
NVIDIA Nemotron 3 Ultra 550B A55B BF16
GLM 5.3
Coding
NVIDIA Nemotron 3 Ultra 550B A55B BF16
GLM 5.3
Agents
NVIDIA Nemotron 3 Ultra 550B A55B BF16
GLM 5.3
Math
NVIDIA Nemotron 3 Ultra 550B A55B BF16
GLM 5.3
Science
NVIDIA Nemotron 3 Ultra 550B A55B BF16
GLM 5.3
Reasoning
NVIDIA Nemotron 3 Ultra 550B A55B BF16
GLM 5.3
NVIDIA Nemotron 3 Ultra 550B A55B BF16 · #26 of 100 open models · #23 of 96 that fit ≤512 GB
GLM 5.3 · #4 of 100 open models · #3 of 96 that fit ≤512 GB
Benchmarks
17 shared boards: NVIDIA Nemotron 3 Ultra 550B A55B BF16 leads 2, GLM 5.3 leads 15 · Benchmarks imported Oct 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
85.4%#20/98 open
IndependentEpoch AI · Jun 2026
GLM 5.3
90.9%#7/98 open
IndependentEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
70.7#15/19 open
IndependentLiveBench · Jun 2026
GLM 5.3
79.0#4/19 open
IndependentLiveBench · Jun 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
74.7#16/19 open
IndependentLiveBench · Jun 2026
GLM 5.3
85.8#7/19 open
IndependentLiveBench · Jun 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
86.7%#18/86 open
IndependentEpoch AI · Jun 2026
GLM 5.3
91.1%#13/86 open
IndependentEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
88.7#6/19 open
IndependentLiveBench · Jun 2026
GLM 5.3
87.9#8/19 open
IndependentLiveBench · Jun 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
40.3%#29/66 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
59.0%#3/66 open
Lab-reportedEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
43.5%#16/46 open
IndependentEpoch AI · Jun 2026
GLM 5.3
75.4%#2/46 open
IndependentEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
13.6%#12/12 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
40.1%#3/12 open
Lab-reportedEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
22.7%#14/16 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
56.6%#2/16 open
Lab-reportedEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
3.1%#24/66 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
19.1%#4/66 open
Lab-reportedEpoch AI · Aug 2026
22 more boards (other shared and single-model boards)
NVIDIA Nemotron 3 Ultra 550B A55B BF16
90.1%#7/68 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
87.7%#11/68 open
Lab-reportedEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
43.6#13/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
82.8#3/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
11.2#14/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
35.9#5/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
74.7#11/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
85.8#4/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
36.9%#13/54 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
55.5%#1/54 open
Lab-reportedEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
20.0%#7/18 open
IndependentEpoch AI · Jun 2026
GLM 5.3
33.0%#4/18 open
IndependentEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
2.0%#23/26 open
Lab-reportedEpoch AI · Jun 2026
GLM 5.3
49.0%#8/26 open
Lab-reportedEpoch AI · Aug 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
1426.0#27/187 open
ArenaLMArena · Oct 2026
GLM 5.3
1478.5#3/187 open
ArenaLMArena · Oct 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
0.0#14/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
0.0#15/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
54.5#13/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
70.2#10/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
58.6#12/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
77.3#2/15 open
IndependentLiveBench · Sep 2026
NVIDIA Nemotron 3 Ultra 550B A55B BF16
43.2#14/15 open
IndependentLiveBench · Sep 2026
GLM 5.3
73.2#6/15 open
IndependentLiveBench · Sep 2026
Only GLM 5.3 (10)
- FrontierMath68.8%
- LMArena WebDev1621.1
- SimpleQA41.0%
- FrontierMath Tier 429.3%
- DeepSWE69.0%
- Chess Puzzles37.0%
- Vending-Bench 28163.6
- ALE-Bench1317.4
- CursorBench42.6%
- FrontierSWE30.2%
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
NVIDIA Nemotron 3 Ultra 550B A55B BF16
262 GB~238.2 GB file
32K 280 GB · 128K 338 GB
GLM 5.3
324 GB~320.2 GB file
32K 323 GB · 128K 332 GB
Q3_K_M
NVIDIA Nemotron 3 Ultra 550B A55B BF16
301 GB274.0 GB file
32K 319 GB · 128K 376 GB
GLM 5.3
371 GB~367.3 GB file
32K 370 GB · 128K 379 GB
Q4_K_M
NVIDIA Nemotron 3 Ultra 550B A55B BF16
370 GB359.2 GB file
32K 388 GB · 128K 446 GB
GLM 5.3
456 GB~452.0 GB file
32K 455 GB · 128K 464 GB
Q5_K_M
NVIDIA Nemotron 3 Ultra 550B A55B BF16
439 GB426.5 GB file
32K 457 GB · 128K 515 GB
GLM 5.3
541 GB~536.8 GB file
32K 540 GB · 128K 549 GB
Q6_K
NVIDIA Nemotron 3 Ultra 550B A55B BF16
509 GB460.7 GB file
32K 527 GB · 128K 585 GB
GLM 5.3
626 GB~621.5 GB file
32K 625 GB · 128K 634 GB
Q8_0
NVIDIA Nemotron 3 Ultra 550B A55B BF16
617 GB584.3 GB file
32K 635 GB · 128K 692 GB
GLM 5.3
758 GB801.4 GB file
32K 757 GB · 128K 765 GB
10 more quants
IQ2_XXS
NVIDIA Nemotron 3 Ultra 550B A55B BF16
170 GB193.8 GB file
32K 188 GB · 128K 245 GB
GLM 5.3
not listed
IQ2_XS
NVIDIA Nemotron 3 Ultra 550B A55B BF16
185 GB169.5 GB file
32K 203 GB · 128K 261 GB
GLM 5.3
not listed
IQ2_M
NVIDIA Nemotron 3 Ultra 550B A55B BF16
208 GB194.0 GB file
32K 226 GB · 128K 284 GB
GLM 5.3
258 GB238.6 GB file
32K 257 GB · 128K 266 GB
IQ3_XXS
NVIDIA Nemotron 3 Ultra 550B A55B BF16
239 GB223.3 GB file
32K 257 GB · 128K 315 GB
GLM 5.3
296 GB281.7 GB file
32K 295 GB · 128K 304 GB
IQ3_S
NVIDIA Nemotron 3 Ultra 550B A55B BF16
262 GB250.5 GB file
32K 280 GB · 128K 338 GB
GLM 5.3
not listed
IQ4_XS
NVIDIA Nemotron 3 Ultra 550B A55B BF16
331 GB286.1 GB file
32K 349 GB · 128K 407 GB
GLM 5.3
409 GB365.3 GB file
32K 408 GB · 128K 417 GB
IQ4_NL
NVIDIA Nemotron 3 Ultra 550B A55B BF16
347 GB294.2 GB file
32K 365 GB · 128K 423 GB
GLM 5.3
not listed
Q4_K_S
NVIDIA Nemotron 3 Ultra 550B A55B BF16
347 GB327.7 GB file
32K 365 GB · 128K 423 GB
GLM 5.3
not listed
Q5_K_S
NVIDIA Nemotron 3 Ultra 550B A55B BF16
424 GB391.7 GB file
32K 442 GB · 128K 500 GB
GLM 5.3
not listed
BF16
NVIDIA Nemotron 3 Ultra 550B A55B BF16
1233 GB1099.0 GB file
32K 1251 GB · 128K 1309 GB
GLM 5.3
1511 GB1508.0 GB file
32K 1510 GB · 128K 1519 GB
NVIDIA Nemotron 3 Ultra 550B A55B BF16
Ollama · Q4_K_M
ollama run hf.co/unsloth/NVIDIA-Nemotron-3-Ultra-550B-A55B-GGUF:Q4_K_MGLM 5.3
Ollama · Q4_K_M
ollama run hf.co/unsloth/GLM-5.3-GGUF| Spec | NVIDIA Nemotron 3 Ultra 550B A55B BF16 | GLM 5.3 |
|---|---|---|
| Publisher | NVIDIA | Z.ai |
| Parameters | 560.5B | 753.3B |
| Active parameters | 57B per token | 42B per token |
| Architecture | NemotronHForCausalLM | GlmMoeDsaForCausalLM |
| Context | 256K tokens | 1M tokens |
| Modalities | Chat, Function-calling | Chat, Function-calling |
| License | Other | Other |
| Released | Jun 2026 | Aug 2026 |
Frequently Asked Questions
Which is better, NVIDIA Nemotron 3 Ultra 550B A55B BF16 or GLM 5.3?
GLM 5.3 leads llmrun Score 130.1 to 109.9; neither fits 24 GB. Choose NVIDIA Nemotron 3 Ultra 550B A55B BF16 for lighter on memory; choose GLM 5.3 for higher llmrun Score and stronger at agents.
Which needs less VRAM, NVIDIA Nemotron 3 Ultra 550B A55B BF16 or GLM 5.3?
At Q4_K_M, NVIDIA Nemotron 3 Ultra 550B A55B BF16 requires 370.0 GB while GLM 5.3 needs 456.2 GB, making NVIDIA Nemotron 3 Ultra 550B A55B BF16 the easier model to run on your local setup.
Can I run NVIDIA Nemotron 3 Ultra 550B A55B BF16 or GLM 5.3 on a 16 GB GPU?
NVIDIA Nemotron 3 Ultra 550B A55B BF16 does not fit (smallest quant needs 178 GB); GLM 5.3 does not fit (smallest quant needs 256 GB).
Which has a longer context window, NVIDIA Nemotron 3 Ultra 550B A55B BF16 or GLM 5.3?
NVIDIA Nemotron 3 Ultra 550B A55B BF16 supports 262,144 tokens and GLM 5.3 supports 1,048,576 tokens.