Step 3.5 Flash 2603

Apr 2026
Step 3.5 Flash 2603
Compare in
—per task?
$0.10 / $0.30per 1M in / outcache $0.02
—output speed?
256Kcontext

Benchmarks

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No benchmark results yet.

FAQ

How much does Step 3.5 Flash 2603 cost?›

$0.10 per 1M input tokens and $0.30 per 1M output tokens; cached input $0.02 per 1M.

Is Step 3.5 Flash 2603 free to use?›

There is no free API; the cheapest paid price is $0.10 per 1M input tokens.

How can I use Step 3.5 Flash 2603?›

Through the StepFun API.

What is the context window of Step 3.5 Flash 2603?›

256K tokens.

When was Step 3.5 Flash 2603 released? Is there a newer version?›

Released 2026-04-02. It is the current version in its line.

Can Step 3.5 Flash 2603 read images?›

No, it accepts text only.

What is Step 3.5 Flash 2603?›

Step 3.5 Flash 2603 is a language model from StepFun, released Apr 2026.