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Codex Mini vs Gemini 1.5 Flash (Comparative Analysis)

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Comparative Analysis: Codex Mini vs. Gemini 1.5 Flash
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Overview

Gemini 1.5 Flash was released 1 year before Codex Mini.
Codex MiniCodex Mini
Gemini 1.5 FlashGemini 1.5 Flash
Model Provider
The organization behind this AI's development
OpenAI logoOpenAI
Google logoGoogle
Input Context Window
Maximum input tokens this model can process at once
200K
tokens
1M
tokens
Output Token Limit
Maximum output tokens this model can generate at once
100K
tokens
8.2K
tokens
Release Date
When this model first became publicly available
May 16th, 2025
May 14th, 2024

Capabilities & Features

Compare supported features, modalities, and advanced capabilities
Codex Mini
Gemini 1.5 Flash
Input Types
Supported input formats
🖼️Image📝Text
📝Text🖼️Image
Output Types
Supported output formats
📝Text
📝Text
Tokenizer
Text encoding system
GPTGemini
Key Features
Advanced capabilities
Function CallingStructured OutputReasoning ModeContent Moderation
Function CallingStructured OutputReasoning ModeContent Moderation

Pricing

Codex Mini is roughly 21.4x more expensive compared to Gemini 1.5 Flash for input tokens and roughly 20.0x more expensive for output tokens.
Codex MiniCodex Mini
Gemini 1.5 FlashGemini 1.5 Flash
Input Token Cost
Cost per million input tokens
$1.50
per million tokens
$0.07
per million tokens
Output Token Cost
Cost per million outut tokens
$6.00
per million tokens
$0.30
per million tokens

Benchmarks

Compare relevant benchmarks between Codex Mini and Gemini 1.5 Flash.
Codex MiniCodex Mini
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 Codex Mini and Gemini 1.5 Flash unique.
OpenAI logoCodex 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 200K token context window. Reasonably priced at $1.50/M input and $6.00/M output tokens. Includes built-in content moderation for safer outputs. Released May 16th, 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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