Step 5 Preview API

CN StepFun | publié 2026-10

Essayer dans le bac à sable → Obtenir une clé API

Step 5 Preview is StepFun’s new-generation flagship base model for real-world tasks, focused on programming and professional knowledge work. It natively accepts text, image and video input, making it a versatile single model for multimodal understanding at frontier quality.

cap.visionCodeRaisonnementPremium

Tarifs (officiel, par 1M tokens)

Entrée

$1.04/M

Sortie

$2.98/M

Spécifications

Fenêtre de contexte256K tokens Modalités d'entréeTexte StreamingOui APICompatible OpenAI

Comment utiliser Step 5 Preview

Remplacement direct d'OpenAI. Changez base_url et modèle.

# Python - pip install openai
from openai import OpenAI

client = OpenAI(
    base_url="https://meshtok.com/v1",
    api_key="sk-your-MeshTok-key",
)

resp = client.chat.completions.create(
    model="stepfun/step-5-preview",
    messages=[{"role":"user","content":"Hello!"}],
)
print(resp.choices[0].message.content)

# cURL
curl https://meshtok.com/v1/chat/completions \
  -H "Authorization: Bearer sk-your-MeshTok-key" \
  -H "Content-Type: application/json" \
  -d '{"model":"stepfun/step-5-preview","messages":[{"role":"user","content":"Hello!"}]}'