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DeepSeek: DeepSeek V3.1 Terminus

Deepseek · deepseek/deepseek-v3.1-terminus

Runs in the cloud, on our API — not on your own machine.

open weights tools reasoning optional retires 2026-09-28

DeepSeek-V3.1 Terminus is an update to [DeepSeek V3.1](/deepseek/deepseek-chat-v3.1) that maintains the model's original capabilities while addressing issues reported by users, including language consistency and agent capabilities, further optimizing the model's...

Install on 00

Get the 00 app

Free · macOS

Your agents, your models, your machine — this model installs with one click once the app is on board.

Download free →

Scheduled to retire on 2026-09-28 — worth choosing what replaces it before then.

What it costs

Input / 1M
$0.54
Output / 1M
$2
1M in + 1M out
$2.54
Cache read / 1M
$0.27

Final AI-token prices, per million tokens. Bring your own provider key in the app to pay provider rates directly.

What it can do

Takes
text
Returns
text
Tools
yes
Reasoning
optional
Context window
164K tokens
Max output
33K tokens
Open weights
yes

Dates

Released
2025-09-22
Knowledge cutoff
2025-03-31
Retires
2026-09-28

Using it

In the 00 app — pick it per agent, and per tier, then build your own agents on it. Get 00.

As a drop-in API — the same model at an OpenAI-compatible endpoint. Two settings:

  1. Create a workspace API key in the Overblast console — usage bills that workspace's AI tokens, at the prices on this page.
  2. Point your base URL at https://brain.deployd.network/ai/v1. Chat completions with streaming, embeddings, /images, /audio/transcriptions and /videos.
curl https://brain.deployd.network/ai/v1/chat/completions \
  -H "Authorization: Bearer ob_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "deepseek/deepseek-v3.1-terminus",
    "messages": [{ "role": "user", "content": "Hello" }]
  }'

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