step-5-preview API
Call step-5-preview through a single OpenAI-compatible endpoint — one key, no separate vendor account, no multi-provider wiring.
ChatReasoningCodingVision43.7
Intelligence index
Pricing
Input$0.50 / 1M tokens (¥3.25)
Output$1.35 / 1M tokens (¥8.78)
Output multiplier×2.70
Context window1M tokens
Max output64K tokens
Prices are per 1M tokens in USD · ¥6.5 = $1 · Billed in CNY
When to use it
At $0.50 per 1M input tokens it sits above the catalogue median of $0.38 — a capability-first choice. Best for coding agents and repository-scale edits. Every model here is reachable with the same API key, so trialling it against a stronger sibling costs one line of code.
Code
from openai import OpenAI
client = OpenAI(
base_url="https://starseaapi.com/v1",
api_key="sk-your-key"
)
r = client.chat.completions.create(
model="step-5-preview",
messages=[{"role": "user", "content": "Explain prefix caching in one paragraph"}]
)
print(r.choices[0].message.content)