gpt-oss-20b vs NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16
Specs, VRAM requirements and download trends — updated 21 September 2026.
Specification comparison
Differences are highlighted; identical values are muted.
| Specification | gpt-oss-20b | NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16 |
|---|---|---|
| Parameters | 21.5 B | 31.6 B |
| Architecture | GptOssForCausalLM | NemotronHForCausalLM |
| Context length | 131,072 | 262,144 |
| Licence | apache-2.0 | other |
| Commercial use | Allowed | Unknown |
| Languages | — | 6 |
| Downloads 30d | 6,658,531 | 569,990 |
| Downloads all time | 98.5 M | 698 K |
| Quantizations on the Hub | SAFETENSORS | SAFETENSORS |
| Gated | No | No |
| First seen on the Hub | 2025-08-04 | 2026-08-01 |
Download trend
Daily snapshots, last 56 days (28 Jul – 21 Sep)
8.6 M376 K
gpt-oss-20b
NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16
VRAM side by side
On RTX 4090 · 24 GB · 8K context unless noted
gpt-oss-20b · fp16 @ 128K ctx
82.4 GB / 24 GB
NVIDIA-Nemotron-3.5-Lightning-30B-A3B-BF16 · fp16 @ 256K ctx
224.5 GB / 24 GB