DeepSeek V3.5

Name: DeepSeek V3.5
Rating: 4.5 (1 reviews)
Author: DeepSeek

Open Source

By DeepSeekReleased 2026-01-20128K context700B (MoE, 37B active) parameters

Open SourceAPI Available

Benchmark Scores

89.4/100

MMLU90.5

HumanEval91

Math86.5

Reasoning89

Coding90

About DeepSeek V3.5

DeepSeek V3.5 improves on V3 with better general knowledge, instruction following, and coding. It remains one of the most cost-efficient models available while delivering near-frontier performance.

Strengths

+Incredible cost efficiency
+Strong general performance
+Open source
+Fast inference with MoE

Weaknesses

-Below frontier on hardest tasks
-Weaker creative writing
-Limited multimodal

Pricing

Per 1M tokens

Input$0.27

Output$1.10

Quick Facts

Context Window: 128K
Parameters: 700B (MoE, 37B active)
Release Date: 2026-01-20
Category: Open Source

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