OpenAI: gpt-oss-20b

Made by openai. Open weights

Input price
$0.018
per 1M tokens
Output price
$0.09
per 1M tokens
Context window
131K
tokens
Quality
1,288
#257 on LMArena
Size
21B
parameters
Downloads
6.1M
on Hugging Face, last 30 days

Can I run it locally?

Estimate for the Q4_K_M version with an 8K context. Pick your own card and settings in the calculator.

  • NVIDIA GeForce RTX 40608 GBRuns, but slowly5.2 to 7.3 tokens/s
  • NVIDIA GeForce RTX 306012 GBRuns, but slowly10 to 15 tokens/s
  • NVIDIA GeForce RTX 4060 Ti 16 GB16 GBRuns14 to 19 tokens/s
  • NVIDIA GeForce RTX 409024 GBRuns47 to 67 tokens/s
  • NVIDIA GeForce RTX 509032 GBRuns84 to 119 tokens/s
  • Apple M1 Pro 32 GB32 GBRuns9.4 to 13 tokens/s
Check my computer

Prices: OpenRouter, refreshed 8 Oct 2026. Quality: LMArena (CC BY 4.0), leaderboard of 2 Oct 2026. Model page on Hugging Face