How much does Step 5 Preview cost on Zeplik?

Input tokens cost 12.0 credits per million and output tokens 32.4 credits per million (1 credit = $0.10; the raw provider rates are $1.00 and $2.70 per million). New accounts start with free credits.

How long can a conversation with Step 5 Preview be?

Step 5 Preview has a 1M-token context window (1,000,000 tokens), which covers the conversation plus any documents you attach.

Does Step 5 Preview support images and tools?

Step 5 Preview accepts image input and supports tool calling.

Step 5 Preview

General purposeVisionTools

StepFun · Released October 2026

Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters).

It belongs to StepFun's Step series, carried here in its Flash speed tiers.

Facts and pricing

Provider: StepFun
Context window: 1M tokens
Input price: 12.0 credits / 1M tokens ($1.00 raw)
Output price: 32.4 credits / 1M tokens ($2.70 raw)
Vision (image input): Yes
Tool calling: Yes
Extended reasoning: No

Credits are what Zeplik bills: 1 credit = $0.10, computed from the raw provider rate with a 1.20x margin. Raw prices shown per 1M tokens.

Try Step 5 Preview now

Or open Zeplik with Step 5 Preview already selected

What Step 5 Preview is best for

Balanced everyday work: writing, questions, brainstorming and summarization
Very long documents and codebases: a 1M-token window fits entire books or repositories in one conversation
Working with images: screenshots, charts, photos and scanned documents alongside text
Tool use and agents: reliably calls functions, so it can search, run skills and drive workflows

Example prompts

Prompts that suit a general purpose model like Step 5 Preview:

Help me outline a talk about what I learned this year
Compare these two paragraphs and tell me which is clearer and why
Draft a polite reply declining this invitation
Explain this concept with a concrete everyday analogy

StepFun family

Model	Context	Input cr/M	Output cr/M	Released
Step 5 Preview	1M	12.0	32.4	October 2026
Step 3.7 Flash	256K	2.4	13.8	May 2026
Step 3.5 Flash	262K	1.2	3.6	January 2026

Model comparisons

Frequently asked questions

What is Step 5 Preview?: Step 5 Preview is an AI model by StepFun. Step 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters).
How much does Step 5 Preview cost on Zeplik?: Input tokens cost 12.0 credits per million and output tokens 32.4 credits per million (1 credit = $0.10; the raw provider rates are $1.00 and $2.70 per million). New accounts start with free credits.
How long can a conversation with Step 5 Preview be?: Step 5 Preview has a 1M-token context window (1,000,000 tokens), which covers the conversation plus any documents you attach.
Does Step 5 Preview support images and tools?: Step 5 Preview accepts image input and supports tool calling.

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