Diary / field note
Nex N2 Pro is free on OpenRouter, for now
When a 397B total parameter agentic model is free to test, the sensible move is not to worship the benchmark. It is to throw real work at it before the pricing changes.
Nex just dropped Nex-N2-Pro on OpenRouter, and the free route is live for now.
The spec is the kind of thing that would have sounded absurd a year ago: 397B total parameters, 17B active per token, mixture-of-experts, built on the Qwen3.5 architecture, text and image input, text output, reasoning, function calling and structured outputs.
That matters because this is not being positioned as another chat model.
It is being aimed at the work loop: planning, coding, debugging, tool use, research and iteration. The boring middle where most agent systems either prove themselves or collapse into a pile of half-finished tasks.
The practical question is simple: can it hold the loop?
Not “does it sound smart?”
Can it take a repo, inspect the problem, plan the fix, write code, call tools, notice the mistake, correct itself and keep going without becoming expensive nonsense?
That is what I care about.
Free model routes do not stay free forever. Sometimes they slow down. Sometimes they disappear. Sometimes the quality changes when providers alter the serving stack.
So the window is now.
Throw real work at it:
- one coding fix with tests
- one long research task with citations
- one tool-calling workflow
- one structured-output extraction job
- one messy agent loop that usually exposes weak models
If it handles those, it earns a place in the stack.
If it only wins on model-card adjectives, it goes in the same bucket as every other “almost useful” release.
Try it here: Nex-N2-Pro on OpenRouter
Source: OpenRouter model card