stepfunVision
StepFun: Step 5 Preview
Try in chat →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...
Context
1M tokens
Input / 1M tokens
$1.10
Output / 1M tokens
$2.97
Benchmark
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Uptime & performance
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Pricing
Input tokens$1.10 per 1M tokens
Output tokens$2.97 per 1M tokens
Cache read$0.11 per 1M tokens
Apps and activity
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Technical details
Model IDstepfun/step-5-preview
Context window1M tokens
Input modalitiestext, image, video
Output modalitiestext
TokenizerOther
Max output tokens64,000
Use with MegaBrain
import OpenAI from 'openai'
const client = new OpenAI({
baseURL: 'https://getmegabrain.com/api/gateway/v1',
apiKey: process.env.MEGABRAIN_API_KEY,
})
const response = await client.chat.completions.create({
model: 'stepfun/step-5-preview',
messages: [{ role: 'user', content: 'Hello!' }],
})Ready to use StepFun: Step 5 Preview?
Try it in the browser first, then get an API key and start making requests in minutes.