MODELS / DEEPSEEK

DeepSeek V3.1 Terminus

DeepSeek-V3.1-Terminus delivers more stable & reliable outputs across benchmarks compared to the previous version and addresses user feedback (i.e. language consistency and agent upgrades).

TEXTREASONINGIMPLICIT-CACHINGREASONINGTOOL-USE
131.1K
CONTEXT WINDOW
65.5K
MAX OUTPUT TOKENS
$0.27
INPUT PRICE / 1M TOKENS
$1
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-terminus",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS

The full spec sheet.

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

MODEL ID
blackboxai/deepseek/deepseek-v3.1-terminus
DEVELOPED BY
DeepSeek
MODEL TYPE
Text
RELEASED
Sep 22, 2025
CONTEXT WINDOW
131.1K
MAX OUTPUT TOKENS
65.5K
INPUT MODALITIES
text
OUTPUT MODALITIES
text
INPUT PRICE
$0.27 / 1M tokens
OUTPUT PRICE
$1 / 1M tokens
CACHE READ
$0.135 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Enterprise · single-tenant
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning