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Gemini 2.5 Pro Experimental vs Gemini 1.5 Flash (Comparative Analysis)

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Comparative Analysis: Gemini 2.5 Pro Experimental vs. Gemini 1.5 Flash
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Overview

Gemini 1.5 Flash was released 10 months before Gemini 2.5 Pro Experimental.
Gemini 2.5 Pro ExperimentalGemini 2.5 Pro Experimental
Gemini 1.5 FlashGemini 1.5 Flash
Model Provider
The organization behind this AI's development
Google logoGoogle
Google logoGoogle
Input Context Window
Maximum input tokens this model can process at once
1M
tokens
1M
tokens
Output Token Limit
Maximum output tokens this model can generate at once
65.5K
tokens
8.2K
tokens
Release Date
When this model first became publicly available
March 25th, 2025
May 14th, 2024

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Gemini 2.5 Pro Experimental
Gemini 1.5 Flash
Input Types
Supported input formats
📝Text🖼️Image📁File
📝Text🖼️Image
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
GeminiGemini
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation

Pricing

Gemini 2.5 Pro ExperimentalGemini 2.5 Pro Experimental
Gemini 1.5 FlashGemini 1.5 Flash
Input Token Cost
Cost per million input tokens
Not specified
$0.07
per million tokens
Output Token Cost
Cost per million outut tokens
Not specified
$0.30
per million tokens

Benchmarks

Compare relevant benchmarks between Gemini 2.5 Pro Experimental and Gemini 1.5 Flash.
Gemini 2.5 Pro ExperimentalGemini 2.5 Pro Experimental
Gemini 1.5 FlashGemini 1.5 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 Gemini 2.5 Pro Experimental and Gemini 1.5 Flash unique.
Google logoGemini 2.5 Pro Experimental by Google understands both text and images, can use external tools and APIs, generates structured data. It can handle standard conversations with its 1M token context window. Released March 25th, 2025.
Google logoGemini 1.5 Flash by Google understands both text and images, can use external tools and APIs, generates structured data. It can handle standard conversations with its 1M token context window. Very affordable at $0.07/M input and $0.30/M output tokens. Released May 14th, 2024.

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