Cheapest StepFun Models

Quick answer · Updated June 2026

The cheapest StepFun model is Step 3.5 Flash at $0.090 per million input tokens. Step 3.7 Flash ($0.200) is next.

$0.090Input /M

37.8Intelligence

47 t/sSpeed

262KContext

AI models ranked by input token price. The most affordable large language model APIs, from budget open-weight models to discounted frontier models.

1S
step-3.5-flash
ReasoningToolsJSON37.8 intel · 47 t/s · 450ms ttft
$0.090
Input /M
2S
step-3.7-flash
ReasoningToolsJSON+142.6 intel · 92 t/s · 1.4s ttft
$0.200
Input /M

Frequently asked

What is the cheapest StepFun model?

The cheapest StepFun model is Step 3.5 Flash at $0.090 per million input tokens. Step 3.7 Flash ($0.200) is next.

What's a good alternative to Step 3.5 Flash?

Step 3.7 Flash ($0.200) is the closest alternative on this metric. See the full ranking above for the tradeoffs.

How many StepFun models are there?

modelgrep tracks 2 StepFun models with live benchmarks, speed, latency and per-provider pricing, led on intelligence by Step 3.7 Flash. 2 of them qualify for this ranking.

More StepFun rankings

StepFun: Smartest LLMs StepFun: Best LLMs for Coding StepFun: Best LLMs for Design & Frontend StepFun: Fastest LLMs StepFun: Lowest-Latency LLMs StepFun: Best Free LLMs StepFun: Best Reasoning LLMs StepFun: Best Vision LLMs StepFun: Best LLMs for Agents StepFun: Best Open-Source LLMs StepFun: Longest-Context LLMs

All rankings

Small & Fast LLMs Smartest LLMs Best LLMs for Coding Best LLMs for Design & Frontend Fastest LLMs Lowest-Latency LLMs Best Free LLMs Best Reasoning LLMs Best Vision LLMs Best LLMs for Agents Best Open-Source LLMs Longest-Context LLMs