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DeepSeek

Every DeepSeek model on Synthorai: one endpoint, live prices.

2 models · chat / code / tools / reasoning · from $0.138/M input

Why DeepSeek via Synthorai

  • Pay-as-you-go, no subscription. One key, every model; no DeepSeek account required.
  • Zero prompt retention. Zero prompt retention at the gateway by default; upstream provider data policies apply. Details →
  • Prompt caching. Automatic disk KV-prefix caching: cache hits bill at the discounted cache-read rate with no opt-in and no write fee. Cache reads from $0.0028/M.

DeepSeek models & pricing

ModelInput /MOutput /MCache read /MContext
DeepSeek V4 Pro $1.608$3.216$0.0134131K
DeepSeek V4 Flash $0.138$0.275$0.00281M

Provider list prices: no platform markup. Prices refresh live on each model's page. These are official list prices. Logged-in customers may see effective prices including workspace discounts on /console/pricing.

Use DeepSeek models in 30 seconds

from openai import OpenAI

client = OpenAI(
    base_url="https://synthorai.io/v1",
    api_key="sk-syn-...",
)

resp = client.chat.completions.create(
    model="deepseek-v4-pro",
    messages=[{"role": "user", "content": "Summarize this diff"}],
    reasoning_effort="medium",
)
print(resp.choices[0].message.content)

About DeepSeek

DeepSeek's chat and reasoner models deliver near-frontier quality at some of the lowest token prices in the industry. On Synthorai, DeepSeek sits behind the same OpenAI-compatible endpoint as the rest of the catalogue, with no direct DeepSeek account needed and live prices below.

FAQ

How do I get a DeepSeek API key without a subscription?

You don't need a DeepSeek account: sign up on Synthorai, create one API key, and every DeepSeek model on this page works through the OpenAI-compatible endpoint: pay-as-you-go, no subscription (models marked "invited beta" additionally need an approved application).

What does the DeepSeek API cost?

Token-billed models start at $0.138/M input tokens; every model's live per-unit price is in the table above. These are provider list prices with no platform markup.

Can I use my own DeepSeek key (BYOK)?

BYOK isn't available for DeepSeek yet; requests run on Synthorai's managed channels at the listed rates.

What is DeepSeek's data-retention policy via API?

Zero prompt retention at the gateway by default; upstream provider data policies apply.

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