DeepSeek V3.1 Terminus
Pick up to 3 models · pricing, context and capabilities · simulate your product cost
Data updated on September 30, 2026· 217 models
DeepSeek-V3.1 Terminus is an update to DeepSeek 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...
- Reasoning estimated
- Speed estimated
- Input
- Output
- Context
- 164 K tokens
- Max output
- 66 K
- Input, $ per 1M tokens
- $0.300
- Output, $ per 1M tokens
- $1.00
- Cache read, $ per 1M
- $0.135
- Batch (input / output)
- —
- Tool calling
- Yes
- Released
- 09/22/2025
- Knowledge cutoff
- 2025-09
- API id
- deepseek/deepseek-v3.1-terminus
Summary from the data
DeepSeek V3.1 Terminus is a DeepSeek model available by API since 09/22/2025. It costs $0.300 per million input tokens and $1.00 per million output tokens, accepts 164 K tokens of context and generates up to 66 K tokens per response. Input: text; output: text. It has a reasoning mode. It supports tool calling. With 10,000 requests a month of 1,500 input and 400 output tokens it would cost about $8.50 a month.
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What would your product cost?
Estimate the monthly cost with your app's real volume. List prices, no cache or batch discounts.
The 6 cheapest for this scenario (chat, last 12 months)
- 1Lyria 3 Pro Preview Google$0.00
- 2Lyria 3 Clip Preview Google$0.00
- 3Qwen3.7 Flash Qwen$0.97
- 4DeepSeek V4 Flash 0731 DeepSeek$1.55
- 5Ministral 3 3B 2512 Mistral$1.90
- 6Qwen3.5-Flash Qwen$2.02
Frequently asked questions
How much does DeepSeek V3.1 Terminus cost per million tokens?
DeepSeek V3.1 Terminus costs $0.300 per million input tokens and $1.00 per million output tokens (USD, list price). Cache read: $0.135. Batch tier: not published.
What context window does DeepSeek V3.1 Terminus have?
DeepSeek V3.1 Terminus accepts 164 K tokens of context per request and generates up to 66 K tokens per response.
Does DeepSeek V3.1 Terminus accept images, audio or files?
Input: text. Output: text.
Does DeepSeek V3.1 Terminus have a reasoning mode and tool calling?
It has a reasoning mode. It supports tool calling.
When was DeepSeek V3.1 Terminus released and what is its knowledge cutoff?
DeepSeek V3.1 Terminus has been available by API since 09/22/2025. Knowledge cutoff: 2025-09.
What would an app built on DeepSeek V3.1 Terminus cost?
With 10,000 requests a month of 1,500 input and 400 output tokens, DeepSeek V3.1 Terminus would cost about $8.50 a month at list price, without cache or batch discounts.
What is the API id of DeepSeek V3.1 Terminus?
The id is deepseek/deepseek-v3.1-terminus. It is the name passed in the model parameter of the API (or on OpenRouter).
Where do the prices come from and how often are they updated?
From the public catalogs of OpenRouter, models.dev and LiteLLM, which publish each provider's list prices. They sync once a day and the last update date is shown above the comparison.
What does price per million tokens mean?
It is what the provider charges per million tokens you send (input) or the model generates (output). A token is roughly 4 characters. Output almost always costs more than input.
Sources: OpenRouter, models.dev and LiteLLM. Prices in USD per million tokens, list price, no volume discounts. Prompt tokens are an estimate; each provider's tokenizer may differ.