4 models
Ranked by Artificial Analysis Coding Index
Reasoning Tools Open weights 37.1

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
Reasoning Tools JSON Open weights 34.6

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

stepfun/step-3.5-flash-2603 2026-04-02 256K context $0.105/M input $0.314/M output
6 providers
Reasoning Tools Open weights 31.6

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
Reasoning Tools Open weights 24.3

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
17 providers