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StepFun: Step 5 Preview API Pricing

StepFun: Step 5 Preview is an API model from stepfun. It costs $1 per 1M input tokens and $2.7 per 1M output tokens, with cached input at $0.1. Its context window is 1,048,576 tokens with up to 64,000 output tokens. A workload of 10M input + 2M output tokens costs about $15.4 per month.
Input
$1
per 1M tokens
Output
$2.7
per 1M tokens
Cached input
$0.1
per 1M tokens
Context window
1.04858M
1,048,576 tokens
Blended (80/20)
$1.34
per 1M tokens

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 performs strongly in software engineering and professional...

How much does StepFun: Step 5 Preview cost for a real workload?

At 10M input + 2M output tokens per month, StepFun: Step 5 Preview costs about $15.4 ($10 input + $5.4 output). Try your own volumes in the cost calculator.

What are cheaper alternatives to StepFun: Step 5 Preview?

Where to run StepFun: Step 5 Preview

AI/ML API: one API key for 400+ models, including most models tracked here · Novita AI: pay-as-you-go APIs for open models (DeepSeek, Qwen, Llama and more) plus GPU cloud. Prices there follow each platform's own catalog and can differ from the list prices tracked here.

Run it on AI/ML API →Run it on Novita AI →

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Compare StepFun: Step 5 Preview with other models

StepFun: Step 5 Preview vs StepFun: Step 3.5 FlashStepFun: Step 5 Preview vs StepFun: Step 3.7 Flash

Frequently asked questions

How much does StepFun: Step 5 Preview cost?

StepFun: Step 5 Preview costs $1 per 1M input tokens and $2.7 per 1M output tokens (list price, snapshot October 22, 2026). At 10M input + 2M output tokens per month that is about $15.4.

What is the context window of StepFun: Step 5 Preview?

StepFun: Step 5 Preview has a context window of 1,048,576 tokens and can return up to 64,000 output tokens per response.

What are cheaper alternatives to StepFun: Step 5 Preview?

Cheaper models include Elorian: Glimpse ($0.6 in / $3 out), ByteDance Seed: Seed-2.0-Code ($0.5 in / $3 out), Google: Nano Banana 2 (Gemini 3.1 Flash Image) ($0.5 in / $3 out). See the full list on this page.

Is StepFun: Step 5 Preview free to use?

No. StepFun: Step 5 Preview is a paid model at $1 input / $2.7 output per 1M tokens. 21 free models are listed on the free models page.

Provider: stepfun · Model ID: stepfun/step-5-preview · Modality: text+image+video->text · Price snapshot October 22, 2026, refreshed daily. How we collect prices