DeepSeek V3.1

Name: DeepSeek V3.1
Price: 0.15 USD
Availability: InStock
Author: DeepSeek

deepseek/deepseek-chat-v3.1

DeepSeek-V3.1 is a large hybrid reasoning model (671B parameters, 37B active) that supports both thinking and non-thinking modes via prompt templates. It extends the DeepSeek-V3 base with a two-phase long-context training process, reaching up to 128K tokens, and uses FP8 microscaling for efficient inference. Users can control the reasoning behaviour with the `reasoning` `enabled` boolean. Learn more in our docs

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Input price: $0.15USD / 1M tokens
Output price: $0.75USD / 1M tokens
Context window: N/A
Max output: 7.2K

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Playground

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Input⌘ / Ctrl + Enter

Try a prompt

Prompt

7.2K max output

Input$0.15/MOutput$0.75/M

OutputReady

Your response will appear here

Choose an example or write a prompt, then click Run.

Model card

Specifications

Pricing

Input: $0.15 / 1M tokens
Output: $0.75 / 1M tokens

Context & modalities

Max output: 7,168 tokens
Input: Text
Output: Text

Capabilities

Chat: Supported
Vision: Not supported
Reasoning: Supported
Structured output: Supported
Function calling: Supported
Audio input: Not supported

Access

Provider: DeepSeek
Model ID: deepseek/deepseek-chat-v3.1
Execution: sync
Base URL: https://api.sandbase.ai
API: Chat Completions API
Endpoint: /v1/chat/completions

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Send your first request

OpenAI-compatible endpoint with unified authentication and usage tracking.

Production API

Chat Completions API endpoint

https://api.sandbase.ai/v1/chat/completions

Model ID

deepseek/deepseek-chat-v3.1

# The quoted heredoc keeps Unicode and shell metacharacters unchanged.
result=$(curl --fail-with-body --silent \
  -X POST "https://api.sandbase.ai/v1/chat/completions" \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  --data-binary @- <<'SANDBASE_JSON'
{
  "model": "deepseek/deepseek-chat-v3.1",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 2048
}
SANDBASE_JSON
)
printf '%s\n' "$result"

Choose your model

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Questions

FAQ

How do I call DeepSeek V3.1 through SandBase?

Create a SandBase API key, then send requests with the model ID "deepseek/deepseek-chat-v3.1" to Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.

How much does DeepSeek V3.1 cost?

$0.15 per 1M input tokens and $0.75 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.

Which features does DeepSeek V3.1 support?

DeepSeek V3.1 supports reasoning, function calling, structured output. See Specifications above for the full list.

Do I need a separate DeepSeek account?

No. One SandBase API key and balance gives you access to DeepSeek V3.1 and the other models in the catalog; you do not need to sign up with DeepSeek separately.