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GPT-5 Image Mini vs Mercury (Comparative Analysis)

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Comparative Analysis: GPT-5 Image Mini vs. Mercury
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Overview

Mercury was released 3 months before GPT-5 Image Mini.
GPT-5 Image MiniGPT-5 Image Mini
MercuryMercury
Model Provider
The organization behind this AI's development
OpenAI logoOpenAI
Inception logoInception
Input Context Window
Maximum input tokens this model can process at once
400K
tokens
128K
tokens
Output Token Limit
Maximum output tokens this model can generate at once
128K
tokens
16.4K
tokens
Release Date
When this model first became publicly available
October 16th, 2025
June 26th, 2025

Capabilities & Features

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

Pricing

GPT-5 Image Mini is roughly 10.0x more expensive compared to Mercury for input tokens and roughly 2.0x more expensive for output tokens.
GPT-5 Image MiniGPT-5 Image Mini
MercuryMercury
Input Token Cost
Cost per million input tokens
$2.50
per million tokens
$0.25
per million tokens
Output Token Cost
Cost per million outut tokens
$2.00
per million tokens
$1.00
per million tokens

Benchmarks

Compare relevant benchmarks between GPT-5 Image Mini and Mercury.
GPT-5 Image MiniGPT-5 Image Mini
MercuryMercury
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 GPT-5 Image Mini and Mercury unique.
OpenAI logoGPT-5 Image 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 $2.50/M input and $2.00/M output tokens. Includes built-in content moderation for safer outputs. Released October 16th, 2025.
Inception logoMercury by Inception can use external tools and APIs, generates structured data. It can handle standard conversations with its 128K token context window. Very affordable at $0.25/M input and $1.00/M output tokens. Released June 26th, 2025.

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