MODELS / DEEPSEEK

DeepSeek V3.1

DeepSeek-V3.1 is post-trained on the top of DeepSeek-V3.1-Base, which is built upon the original V3 base checkpoint through a two-phase long context extension approach, following the methodology outlined in the original DeepSeek-V3 report. We have expanded our dataset by…

TEXTREASONINGIMPLICIT-CACHINGREASONINGTOOL-USE
163.8K
CONTEXT WINDOW
128K
MAX OUTPUT TOKENS
$0.25
INPUT PRICE / 1M TOKENS
$0.95
OUTPUT PRICE / 1M TOKENS
QUICKSTART

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/deepseek/deepseek-v3.1",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything DeepSeek V3.1 supports, in one table.

MODEL ID
blackboxai/deepseek/deepseek-v3.1
DEVELOPED BY
DeepSeek
MODEL TYPE
Text
RELEASED
Aug 21, 2025
CONTEXT WINDOW
163.8K
MAX OUTPUT TOKENS
128K
INPUT MODALITIES
text
OUTPUT MODALITIES
text
INPUT PRICE
$0.25 / 1M tokens
OUTPUT PRICE
$0.95 / 1M tokens
CACHE READ
$0.13 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Enterprise · single-tenant
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning