All StepFun models
S

Step 3.7 Flash

StepFun · released 2 months ago

Step 3.7 Flash is a StepFun model with a 256K token context window — about 370 pages of text. It reads Text, Images, and Video and replies in Text. It can show its reasoning before it answers.

$0.230

input / 1M tokens

$1.32

output / 1M tokens

256K

context — about 370 pages

0.22¢

a client proposal

Pricing

Input
$0.230 per million tokens
Output
$1.32 per million tokens
Cached input
$0.046 per million tokens

Billed from your Alyph wallet. Prices can change when the provider changes theirs — last checked August 9, 2026.

The numbers

Provider
StepFun
Released
2 months ago (2026-05-28)
Context window
256K tokens — about 370 pages
Max output
256K tokens per reply
Input
Text, Images, and Video
Output
Text
Reasoning
Shows its thinking before answering

Cost vs Token Amount

Drag the slider to adjust the split between input and output workload.

80% Input20% Output
free$0.22$0.450 tokens250k500k750k1000k
Step 3.7 Flash

Adjust the ratio slider to change how output tokens influence the final price for equivalent workloads.

What a task costs

2K tokens in · 500 tokens out.

Step 3.7 Flash

StepFun

0.11¢

for this task

41% input · 59% output

Full pricing →

Your $5 welcome credit covers about 4,459 of these.

Compare Step 3.7 Flash

Closest in price on a typical task:

Step 3.7 Flash vs Qwen Plus 0728 →Step 3.7 Flash vs Qwen-Plus →Step 3.7 Flash vs Cydonia 24B V4.1 →Step 3.7 Flash vs GLM 5.2 →Any other combination →

Questions, answered

How much does Step 3.7 Flash cost on Alyph?

Step 3.7 Flash costs $0.230 per million input tokens and $1.32 per million output tokens on Alyph. A typical task — 5K tokens in, 800 out — works out to about 0.22¢. Billed from your Alyph wallet, with hard spending limits. Prices can change when the provider changes theirs; this page was last checked on August 9, 2026.

What is Step 3.7 Flash's context window?

256K tokens — about 370 pages. Replies can be up to 256K tokens long.

Can Step 3.7 Flash read images and files?

Step 3.7 Flash reads Text, Images, and Video. Drop a file onto the canvas and it becomes part of the context — the only limit is the context window.

Does Step 3.7 Flash show its reasoning?

Yes. Step 3.7 Flash can expose its thinking before the final answer, so you can watch how it got there.

Test Step 3.7 Flash against Qwen Plus 0728

One prompt, both models at the same time, the better answer wins. Free to start, with $5 of credit.

Sign up free Try the demo