DeepSeek V3.1 API
Run DeepSeek-V3.1 through FastInfra's OpenAI-compatible API.
Pay per token, no subscription, routed to the cheapest available provider.
DeepSeek V3.1 pricing
Billed per token used. Prices sync automatically from wholesale providers.
| Direction | Price per 1M tokens |
|---|---|
| Input | $0.26 |
| Output | $1.00 |
Served by 4 providers
Requests route to DeepInfra by default (cheapest).
Pin a specific provider with the :provider suffix.
| Provider | Upstream model ID |
|---|---|
| together | deepseek-ai/DeepSeek-V3.1 |
| deepinfra | deepseek-ai/DeepSeek-V3.1 |
| sambanova | DeepSeek-V3.1 |
| siliconflow | deepseek-ai/DeepSeek-V3.1 |
Call DeepSeek V3.1 in 30 seconds
Works with any OpenAI SDK — change the base URL and API key only.
Python
from openai import OpenAI
client = OpenAI(api_key="YOUR_API_KEY", base_url="https://api.fastinfra.ai/v1")
response = client.chat.completions.create(
model="DeepSeek-V3.1",
messages=[{"role": "user", "content": "Hello!"}]
)
print(response.choices[0].message.content)curl
curl https://api.fastinfra.ai/v1/chat/completions \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "DeepSeek-V3.1",
"messages": [{"role": "user", "content": "Hello!"}]
}'DeepSeek V3.1 — common questions
How much does the DeepSeek-V3.1 API cost?
On FastInfra, DeepSeek-V3.1 costs $0.2625/1M input, $0.9975/1M output tokens. Billing is per token used, with no subscription.
Is DeepSeek-V3.1 compatible with the OpenAI SDK?
Yes. FastInfra exposes DeepSeek-V3.1 through an OpenAI-compatible endpoint at https://api.fastinfra.ai/v1 — point any OpenAI SDK at that base URL with a FastInfra API key and keep your existing code.
Which providers serve DeepSeek-V3.1?
DeepSeek-V3.1 is available from 4 provider(s): together, deepinfra, sambanova, siliconflow. Requests route to DeepInfra by default (cheapest); append ":provider" to the model ID to pin one.
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