WhichAI / Models / Nemotron 3 Ultra

Nemotron 3 Ultra

· verified October 14, 2026

public free open-weights api in Generator speed value reasoning

Provider

Statuspublic

AA Intelligence Index22.9 (official, read October 14, 2026)

Released2026-06-04

Context window1M

Modalitiesn/a

API price $/1M (in / out)$0.6 / $2.4 (OpenRouter)

Speed400+ tok/s on some hosts

AccessFREE on OpenRouter (nvidia/nemotron-3-ultra-550b-a55b:free, rate-limited) · open weights · Perplexity Pro

In one line

Strongest US open model and extremely fast (400+ tokens/second on some hosts) - and genuinely free via OpenRouter.

Coding68

Reasoning68

Writing58

Agents & tools62

Category scores (0-100) are WhichAI blended ratings: public category leaderboards plus editorial judgment. Guidance, not official measurements.

Alternatives worth a look

Qwen3.5-27B (Alibaba) · AA 22.9API $0.26/$2.6 per 1M tokens on OpenRouter · open weights · listed February 25, 2026
MiniMax M2.7 (MiniMax) · AA 22.8Open weights · API hosts
MiniMax M2.5 (MiniMax) · AA 22.8API $0.27/$1.08 per 1M tokens on OpenRouter · open weights · listed February 12, 2026

Head-to-head: Nemotron 3 Ultra vs Inkling

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Artificial Analysis Intelligence Index, official scale (the number published on artificialanalysis.ai), relayed by OpenRouter and refreshed automatically: last read October 14, 2026. 209 models carry a current official measurement. A value marked ~ is converted from an earlier snapshot because no current measurement is published; an unmeasured model is never ranked. Context, price, modality and listing dates come from the public OpenRouter model list (refreshed automatically on the live site; static copy retrieved October 3, 2026) and vendor pages. Missing values are not published or not yet verified - shown as -. Sources are linked inside the app (the Ranking chapter and About > Methodology).