DeepSeek-V3.1 Terminus overview
DeepSeek-V3.1 Terminus specs
- Model ID
deepseek/deepseek-non-reasoner-v3.1-terminus- Developer
- DeepSeek
- Context window
- 128,000 tokens
- Max output
- 8,000 tokens
- Input
- Text
- Output
- Text
- API
- OpenAI-compatible, base URL
https://api.aimlapi.com/v1
DeepSeek-V3.1 is the latest advanced LLM with improved architecture and performance across various natural language tasks.
Coding and code review
Generate, debug, and review code across languages, reading whole files or repos in a single prompt.
Agentic and multi-step workflows
Reliable tool-calling and instruction-following suit agent loops that plan, call tools, and iterate.
Long-document analysis
Summarize and extract from contracts, papers, and reports without aggressive chunking.
Use cases
- Fast customer support and chatbot responses
- Multilingual marketing copy and content generation
- Automated coding assistance and script execution
- Knowledge base querying with long context
- Tool-assisted task automation workflows
- Quick summarization of long documents without deep explanation
Capabilities
- Streaming
- Structured outputs
- Function calling
DeepSeek-V3.1 Terminus benchmarks by
Artificial Analysis
See how DeepSeek-V3.1 Terminus scores on independent evaluations. Data retrieved Nov 3, 2026.
Benchmark results
Compare 7 models available on AI/ML API across 5 independent benchmarks.
Humanity's Last Exam
Expert-written questions across academic subjects.
GPQA Diamond
Graduate-level science questions written to resist web search.
Terminal-Bench 4.0
Agentic tasks completed in a command-line environment.
AA-LCR
Reasoning across long documents of about 100k tokens.
SciCode
Python coding tasks drawn from scientific research.
DeepSeek-V3.1 Terminus API pricing
| Usage | Price | Unit |
|---|---|---|
| Input | $0.2857 | 1M tokens |
| Output | $1.06 | 1M tokens |
| Cached input | $0.2857 | 1M tokens |
Prices from the AI/ML API price list, checked on Nov 4, 2026.
DeepSeek-V3.1 Terminus vs other models: token prices
AI/ML API input and output rates for 5 models, per million tokens.
| Model | Input | Output |
|---|---|---|
| $0.2857 | $1.06 | |
| $0.3 | $1.2 | |
| $0.3 | $1.2 | |
| $0.44 | $1.32 | |
| $0.39 | $1.56 |
How to use the DeepSeek-V3.1 Terminus API
View docsBuild with your agent
Give your agent the model details, code and documentation.
1Get your API key
Create API keyexport AIMLAPI_KEY="8f2b4c7d9a1e6b3f…"2Make your first request
curl 'https://api.aimlapi.com/v1/chat/completions' \
-H "Authorization: Bearer $AIMLAPI_KEY" \
-H 'Content-Type: application/json' \
-d '{
"model": "deepseek/deepseek-non-reasoner-v3.1-terminus",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}'import os
import requests
headers = {
"Authorization": f"Bearer {os.environ['AIMLAPI_KEY']}",
"Content-Type": "application/json",
}
payload = {
"model": "deepseek/deepseek-non-reasoner-v3.1-terminus",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}
response = requests.post("https://api.aimlapi.com/v1/chat/completions", headers=headers, json=payload, timeout=120)
response.raise_for_status()
print(response.json())const response = await fetch("https://api.aimlapi.com/v1/chat/completions", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
"Content-Type": "application/json",
},
body: JSON.stringify({
"model": "deepseek/deepseek-non-reasoner-v3.1-terminus",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}),
});
if (!response.ok) throw new Error(`HTTP ${response.status}`);
console.log(await response.json());Related articles
DeepSeek-V3.1 Terminus FAQ
What is the context window of DeepSeek-V3.1 Terminus?
DeepSeek-V3.1 Terminus has a 128,000 tokens context window and can return up to 8,000 tokens.
What inputs and outputs does DeepSeek-V3.1 Terminus support?
DeepSeek-V3.1 Terminus takes text as input and returns text.
What is the model ID for DeepSeek-V3.1 Terminus?
Use deepseek/deepseek-non-reasoner-v3.1-terminus as the model id. Requests go to https://api.aimlapi.com/v1/chat/completions.
How much does DeepSeek-V3.1 Terminus cost?
DeepSeek-V3.1 Terminus costs $0.2857 input and $1.06 output per 1M tokens on AI/ML API, billed as you go with no subscription.
Does DeepSeek-V3.1 Terminus support streaming?
Yes, DeepSeek-V3.1 Terminus can stream responses as they are generated.
Who created DeepSeek-V3.1 Terminus?
DeepSeek-V3.1 Terminus was built by DeepSeek.

