AI Model Catalog: 2 Models Compared — Pricing, Context & Benchmarks

NVIDIA: Nemotron 3 Ultra 550B A55B T

Reasoning Tools Open weights 46.7

Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy

nvidia/nemotron-3-ultra-550b-a55b 2026-06-04 1M context $0.5/M input $2.5/M output

15 providers

StepFun: Step 3.7 Flash T

Reasoning Tools JSON Open weights 45.8

Newer StepFun flash model for faster agents, coding, and multimodal prompts

stepfun/step-3.7-flash 2026-05-29 256K context $0.185/M input $1.11/M output

17 providers

Filterable model directory
Model	Creator	Score	Inputs	Context	Input	Output	Released	Compare
Nemotron 3 Ultra 550B A55Bnvidia/nemotron-3-ultra-550b-a55b	NVIDIA	46.7	T	1M	$0.5	$2.5	2026-06-04
Step 3.7 Flashstepfun/step-3.7-flash	StepFun	45.8	T	256K	$0.185	$1.11	2026-05-29