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Gemini 1.5 Flash 8B vs GPT-5 Mini (Comparative Analysis)

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Comparative Analysis: Gemini 1.5 Flash 8B vs. GPT-5 Mini
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Overview

Gemini 1.5 Flash 8B was released 10 months before GPT-5 Mini.
Gemini 1.5 Flash 8BGemini 1.5 Flash 8B
GPT-5 MiniGPT-5 Mini
Model Provider
The organization behind this AI's development
Google logoGoogle
OpenAI logoOpenAI
Input Context Window
Maximum input tokens this model can process at once
1M
tokens
400K
tokens
Output Token Limit
Maximum output tokens this model can generate at once
8.2K
tokens
128K
tokens
Release Date
When this model first became publicly available
October 3rd, 2024
August 7th, 2025

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Gemini 1.5 Flash 8B
GPT-5 Mini
Input Types
Supported input formats
📝Text🖼️Image
📝Text🖼️Image📁File
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
GeminiGPT
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation

Pricing

Gemini 1.5 Flash 8B is roughly 0.2x less expensive compared to GPT-5 Mini for input tokens and roughly 0.07x less expensive for output tokens.
Gemini 1.5 Flash 8BGemini 1.5 Flash 8B
GPT-5 MiniGPT-5 Mini
Input Token Cost
Cost per million input tokens
$0.04
per million tokens
$0.25
per million tokens
Output Token Cost
Cost per million outut tokens
$0.15
per million tokens
$2.00
per million tokens

Benchmarks

Compare relevant benchmarks between Gemini 1.5 Flash 8B and GPT-5 Mini.
Gemini 1.5 Flash 8BGemini 1.5 Flash 8B
GPT-5 MiniGPT-5 Mini
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 1.5 Flash 8B and GPT-5 Mini unique.
Google logoGemini 1.5 Flash 8B 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 $0.04/M input and $0.15/M output tokens. Released October 3rd, 2024.
OpenAI logoGPT-5 Mini by OpenAI understands both text and images, can use external tools and APIs, offers advanced reasoning, generates structured data. It can handle standard conversations with its 400K token context window. Reasonably priced at $0.25/M input and $2.00/M output tokens. Includes built-in content moderation for safer outputs. Released August 7th, 2025.

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