Open source alternatives to Nemotron 3 Super

Mistral Small 4 is listed first. Choose Mistral Small 4 when you need image input and an Apache 2.0 licence at the same size; it is a 119B mixture of experts with 6B active and a 256K context, at $0.15 / $0.6 per million tokens on Mistral's API.

Yes. The code of all 3 is public under Apache 2.0 or OpenMDW 1.1, so you can use them with no licence fee. Running one yourself costs the server and your time to look after it, and some makers also sell a hosted plan.

Start from the job you use Nemotron 3 Super for. Choose NVIDIA Nemotron 3 Ultra when accuracy on the hardest planning steps matters more than hardware; it has 55B active parameters out of 550B and needs at least 4 B200 or 8 H100 GPUs. Choose Qwen3.6-27B when you want a smaller Apache 2.0 model that reads images and video; several local users rated it smarter in their own tests, and Alibaba's API serves it at $0.60 / $3.60 per million tokens.

All 3: Mistral Small 4, NVIDIA Nemotron 3 Ultra and Qwen3.6-27B. Each tool's page says what it needs to run.

Apache 2.0 (2), OpenMDW 1.1 (1). MIT, BSD and Apache let you change and reuse the code freely.

The hosting. Nemotron 3 Super's maker runs the servers for you; with an open source tool the updates, backups, security fixes and support are yours, unless you take the maker's hosted plan. Features differ too, so check what each one imports and exports before you move your data.