WhichAI / Compare / Inkling vs Nemotron 3 Ultra

InklingvsNemotron 3 Ultra

Inkling scores higher on the July 16 index. Full context below: price, context window, strengths and honest limits. Verified July 26, 2026.

Provider
Thinking Machines Lab
NVIDIA
AA index
40.7
37.8
Released
2026-07-15
n/a
Context
1M
1M
Price $/1M
n/a
n/a
Access
Open weights (Apache 2.0) on Hugging Face · Tinker API (256K ctx)
FREE on OpenRouter (nvidia/nemotron-3-ultra-550b-a55b:free - WhichAI default runner) · open weights · Perplexity Pro

n/a = not published or not yet verified. Scores marked ~ are WhichAI estimates and should not be compared 1:1 with measured scores.

In one line each

Inkling: Thinking Machines' first open release: 975B-parameter MoE (41B active) reasoning natively over text, images and audio, with controllable thinking effort - the new leading US open-weights base for customization.

Nemotron 3 Ultra: Strongest US open model and extremely fast (400+ tokens/second on some hosts) - and genuinely free via OpenRouter.