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DeepSeek

DeepSeek V3.5

DeepSeek V3.5 is a mixture-of-experts model with 685B total parameters and 37B activated per token. Notable for delivering frontier performance at a fraction of the training cost of competing models.

Released

March 24, 2026

Type

llm

License

open-weight

Context

128,000 tokens

Pricing

Input

$0.27 / 1M tokens

Output

$1.10 / 1M tokens

Capabilities

textcodereasoning

Architecture

Parameters: 685B MoE (37B active)

Links

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