Run gpt-oss-20b on an RTX 4080
15 GiB needed. 16 GiB on the card. It fits.
Deploy picks the cheapest GPU that fits. 10% platform fee included, shown before you start.
Versions that fit
OpenAI's open-weight 20B reasoning model.
| Version | Needs | |
|---|---|---|
| llama.cpp · MXFP4 | 15 GiB | Deploy |
Other GPUs for gpt-oss-20b
Questions
Does gpt-oss-20b fit on an RTX 4080?
Yes. It needs 15 GiB of VRAM and the RTX 4080 has 16 GiB.
What does it cost to run gpt-oss-20b on an RTX 4080?
Hosts set the hourly price. You see it, with our 10% platform fee included, before anything starts. See live RTX 4080 offers.
How do I use gpt-oss-20b once it runs?
It serves an OpenAI-compatible API. The rental page gives you the URL and a key.