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DeepSeek V3 vs Gemini 2.5 Flash (Comparative Analysis)

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Comparative Analysis: DeepSeek V3 vs. Gemini 2.5 Flash
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Overview

DeepSeek V3 was released 5 months before Gemini 2.5 Flash.
DeepSeek V3DeepSeek V3
Gemini 2.5 FlashGemini 2.5 Flash
Model Provider
The organization behind this AI's development
DeepSeek logoDeepSeek
Google logoGoogle
Input Context Window
Maximum input tokens this model can process at once
163.8K
tokens
1M
tokens
Output Token Limit
Maximum output tokens this model can generate at once
Not specified
tokens
65.5K
tokens
Release Date
When this model first became publicly available
December 26th, 2024
June 17th, 2025

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
DeepSeek V3
Gemini 2.5 Flash
Input Types
Supported input formats
📝Text
📁File🖼️Image📝Text🎵Audio
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
DeepSeekGemini
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation
Open Source
Model availability
Available on HuggingFace →Proprietary

Pricing

DeepSeek V3 is roughly 0.7x less expensive compared to Gemini 2.5 Flash for input tokens and roughly 0.3x less expensive for output tokens.
DeepSeek V3DeepSeek V3
Gemini 2.5 FlashGemini 2.5 Flash
Input Token Cost
Cost per million input tokens
$0.20
per million tokens
$0.30
per million tokens
Output Token Cost
Cost per million outut tokens
$0.80
per million tokens
$2.50
per million tokens

Benchmarks

Compare relevant benchmarks between DeepSeek V3 and Gemini 2.5 Flash.
DeepSeek V3DeepSeek V3
Gemini 2.5 FlashGemini 2.5 Flash
MMLU
Measures knowledge across 57 subjects like law, math, history, and science
Benchmark not available.
Benchmark not available.
MMMU
Measures understanding of combined text and images across various domains
Benchmark not available.
Benchmark not available.
HellaSwag
Measures common sense reasoning by having models complete sentences about everyday situations
Benchmark not available.
Benchmark not available.

At a Glance

Quick overview of what makes DeepSeek V3 and Gemini 2.5 Flash unique.
DeepSeek logoDeepSeek V3 by DeepSeek can use external tools and APIs, generates structured data. It can handle standard conversations with its 163.8K token context window. Very affordable at $0.20/M input and $0.80/M output tokens. Released December 26th, 2024.
Google logoGemini 2.5 Flash by Google understands both text and images, handles audio, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 1M token context window. Reasonably priced at $0.30/M input and $2.50/M output tokens. Released June 17th, 2025.

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