AI Model Catalog: 4 Models Compared — Pricing, Context & Benchmarks

StepFun: Step 3.5 Flash T

Open weights 40.4

StepFun flash lane for quick multimodal reasoning and coding assistance

stepfun/step-3.5-flash 2026-01-29 256K context $0.1/M input $0.3/M output

14 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 $0.185/M input $1.11/M output

17 providers

StepFun: Step 3.5 Flash 2603 T

Reasoning Open weights 38.5

StepFun flash model for efficient multimodal reasoning, coding, and tool use

stepfun/step-3.5-flash-2603 2026-04-02 256K context $0.1/M input $0.3/M output

6 providers

Mistral AI: Mistral Small 4 T

Reasoning Tools Open weights 38.0

Fast Mistral production model for chat, extraction, and cost-sensitive agents

mistral/mistral-small-2603 2026-03-16 256K context $0.15/M input $0.6/M output

12 providers

Filterable model directory
Model	Creator	Score	Inputs	Context	Input	Output	Released
Step 3.5 Flashstepfun/step-3.5-flash	StepFun	40.4	T	256K	$0.1	$0.3	2026-01-29
Step 3.7 Flashstepfun/step-3.7-flash	StepFun	40.0	T	256K	$0.185	$1.11	2026-05-29
Step 3.5 Flash 2603stepfun/step-3.5-flash-2603	StepFun	38.5	T	256K	$0.1	$0.3	2026-04-02
Mistral Small 4mistral/mistral-small-2603	Mistral AI	38.0	T	256K	$0.15	$0.6	2026-03-16