gpt-oss-20b vs L3-8B-Lunaris-v1

Specs, VRAM requirements and download trends — updated 25 October 2026.

openai · A · Open weights
Params
21.5 B
Context
131,072
30d
5.8 M
apache-2.0 · commercial OK
Sao10K · B · Open weights
Params
8.0 B
Context
8,192
30d
2 K
llama3 licence · conditional

Specification comparison

Differences are highlighted; identical values are muted.

Specification gpt-oss-20b L3-8B-Lunaris-v1
Deployment Open weights · also via API Open weights · also via API
Parameters 21.5 B 8.0 B
Architecture GptOssForCausalLM LlamaForCausalLM
Context length 131,072 8,192
Licence apache-2.0 llama3
Commercial use Allowed Conditional
Languages — 1
Downloads 30d 5,764,154 1,682
Downloads all time 105.3 M 459 K
Quantizations on the Hub SAFETENSORS SAFETENSORS
Gated No No
First seen on the Hub 2025-08-04 2024-06-26
API input price / 1M tokens $0.018 $0.04
API output price / 1M tokens $0.09 $0.05
Est. cost per 1M input + 1M output tokens $0.11 $0.09
Cached input / 1M tokens $0.009 —
AA Intelligence Index 10 —
AA Coding Index — —
AA Agentic Index — —
Max output tokens 32,768 7,372
API providers 10 2
Tool calling Yes No
Reasoning mode Yes No

API cost

Estimated cost of 1M input + 1M output tokens via OpenRouter

gpt-oss-20b $0.11
L3-8B-Lunaris-v1 $0.09

L3-8B-Lunaris-v1 is 1.2× cheaper at list price.

Download trend

Daily snapshots, last 90 days (28 Jul – 25 Oct)

8.6 M2 K
gpt-oss-20b L3-8B-Lunaris-v1

VRAM side by side

On RTX 4090 · 24 GB · 8K context unless noted

L3-8B-Lunaris-v1 · fp16 19.4 GB / 24 GB
✅ Runs comfortably
gpt-oss-20b · fp16 @ 128K ctx 82.4 GB / 24 GB
❌ Won’t fit

Adjacent comparisons