AI Model Catalog: 3 Models Compared — Pricing, Context & Benchmarks

Sakana: Fugu Ultra T

Reasoning Tools JSON 58.7

Quality-first multi-agent model for hard research, analysis, and competitions

sakana/fugu-ultra 2026-06-15 1M context $5/M input $30/M output

14 providers

StepFun: Step 3.5 Flash T

Reasoning Tools Open weights 40.4

StepFun flash lane for quick multimodal reasoning and coding assistance

stepfun/step-3.5-flash 2026-01-29 256K context $0.105/M input $0.314/M output

15 providers

StepFun: Step 3.7 Flash T

Reasoning Tools JSON Open weights 40.0

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

stepfun/step-3.7-flash 2026-05-29 256K context $0.202/M input $1.211/M output

21 providers

Filterable model directory
Model	Creator	Score	Inputs	Context	Input	Output	Released
Fugu Ultrasakana/fugu-ultra	Sakana	58.7	T	1M	$5	$30	2026-06-15
Step 3.5 Flashstepfun/step-3.5-flash	StepFun	40.4	T	256K	$0.105	$0.314	2026-01-29
Step 3.7 Flashstepfun/step-3.7-flash	StepFun	40.0	T	256K	$0.202	$1.211	2026-05-29