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DeepSeek: DeepSeek V3.1 Terminus

deepseek/deepseek-v3.1-terminus

DeepSeek: DeepSeek V3.1 Terminus is a 163,840-token model served on Composite at $0.338 per million tokens in and $1.25 per million tokens out. Ranked #66 of 194 models by traffic on Composite over the last 30 days, taking 0.1% of tokens and 0.12% of requests. Measured on Composite, 98.0% of its last 100 requests on Composite succeeded, the typical first token arrives in 6928 ms, output runs at about 29.4 tokens per second.

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Specifications

Specifications and pricing as served by Composite
Model IDdeepseek/deepseek-v3.1-terminus
Providercv11
Context window163,840 tokens
Acceptstext
Returnstext
Input price$0.338 per million tokens
Output price$1.25 per million tokens
Prompt cachingNot offered for this model
ModeratedNo
Cost on a monthly planAbout 3.2 plan credits per typical call (8k in, 1k out)
Routing endpoints2 (base plus 1 routing variant)

Traffic rank on Composite

#66 of 194

0.1% of tokens and 0.12% of requests over 30 days.

Success rate

98.0%

Across the last 100 requests Composite served for this model.

Time to first token

6928 ms

Median across the same sample.

Output speed

29.4 tok/s

Median generation rate after the first token.

Prompt cache hits

58.1%

Share of prompt tokens served from the provider's cache over 7 days.

Routing variants

The same model behind 1 alternative endpoint. Call the id directly to pin a route; the base id above picks for you.

RouteModel IDProviderPrice
cheapThink deepseek/deepseek-v3.1-terminus:cheapThink cv11 $0.338 per million tokens input · $1.25 per million tokens output

Pricing

$0.338 per million tokens input · $1.25 per million tokens output

Credits pay the provider’s price plus 25%; cache hits cost less.

On a monthly plan, a typical call (8k tokens in, 1k out) uses about 3.2 plan credits, at the provider's own price.

Provider

cv11

Roleplay fit

DeepSeek models are known for strong reasoning and coding ability at aggressive pricing, which makes them a common pick for roleplay accounts that send a high volume of messages.

Context behavior

With a 163,840-token context window, it can hold a long-running roleplay or a full lorebook in memory without losing earlier plot details, so it suits multi-session campaigns and character cards with heavy backstory.

Cost for regular use

It is priced low enough for high-volume daily roleplay without the per-message cost adding up quickly.

From the provider

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...

Supplied by cv11, not written by Composite.