deepseek-v4.1-flash-fast API

Call deepseek-v4.1-flash-fast through a single OpenAI-compatible endpoint — one key, no separate vendor account, no multi-provider wiring.

Pricing

Prices are per 1M tokens in USD · ¥6.5 = $1 · Billed in CNY

When to use it

At $0.15 per 1M input tokens it sits below the catalogue median of $0.62 — a cost-first choice. Best for general-purpose text workloads. 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="deepseek-v4.1-flash-fast",
  messages=[{"role": "user", "content": "Explain prefix caching in one paragraph"}]
)
print(r.choices[0].message.content)

Integrations · Quickstart

Capabilities