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GPT-5 mini: Faster, More Cost-Efficient Performance
Released on August 7, 2025 as part of the GPT-5 lineup, GPT-5 mini sits alongside GPT-5 and GPT-5 nano as the family's streamlined, efficiency-focused option.
Designed for well-defined and lighter-weight reasoning tasks, it delivers faster responses and lower operational costs while maintaining strong precision for clear, structured prompts. These qualities make it a practical choice for teams building reliable, prompt-driven workflows such as classification, summarization, and other tightly scoped automation tasks. It's well-suited for developers who need speed and affordability without sacrificing accuracy on predictable task patterns.
GPT-5 mini: Key Specs
Below are GPT-5 mini's main specs and how they translate into real-world behavior.
- Context Window - Up to 400,000 tokens: This generous context capacity helps the model keep track of lengthy discussions or documents, allowing it to stay consistent even when working through extended exchanges.
- Maximum Output Length - Up to 128,000 tokens: It can deliver long-form answers in one go, which is helpful for generating full documents, comprehensive explanations, or multi-part content without needing to break it up.
- Speed and Efficiency - Delivers solid, steady performance: The model responds quickly enough to maintain a smooth conversational flow, making it well-suited for interactive tools and real-time applications.
- Cost Efficiency - Economical at $0.25 / $2 per 1M tokens: Its low pricing makes it well suited for large-scale usage, especially in systems that handle many requests throughout the day.
- Reasoning and Accuracy - Reliable mid-level reasoning: It offers consistent logic and clear understanding for everyday tasks, providing solid results for summaries, analyses, and general problem-solving.
- Multimodal Capabilities - Works with text and images as input, returns text: The model can interpret mixed content, allowing you to combine visual information with written prompts for more flexible queries.
Compare GPT-5 mini, GPT-5, and GPT-5 nano
A brief overview of how each model differs in power, speed, and use cases.
| Feature | GPT-5 mini | GPT-5 | GPT-5 nano |
|---|---|---|---|
| Knowledge Cutoff | May 31, 2024 | Sep 30, 2024 | May 31, 2024 |
| Context Window (Tokens) | 400,000 | 400,000 | 400,000 |
| Max Output Tokens | 128,000 | 128,000 | 128,000 |
| Input Modalities | Text, image | Text, image | Text, image |
| Output Modalities | Text | Text | Text |
| Latency (OpenRouter Data) | 4.84s | 7.10s | 2.98s |
| Speed | Faster than GPT-5 | Medium (mid-tier in the GPT-5 series) | Very Fast (faster than GPT-5 mini) |
| Input / Output Cost per 1M Tokens | $0.25 / $2 | $1.25 / $10 | $0.05 / $0.40 |
| Reasoning Performance | High | Very High | Average |
| Coding Performance (on SWE-bench Verified) | 59.80% | 74.90% | 54.60% |
| Best For | well-defined and lighter-weight reasoning tasks | coding, reasoning, and agentic tasks across domains | summarization and classification tasks |
Source: OpenAI GPT-5 mini Documentation
Best Cases to Use GPT-5 mini
GPT-5 mini is best for well-defined and lighter-weight reasoning tasks where you want quick, efficient results.
- For students and learners: Get straightforward explanations, quick concept reviews, and focused study support for clear, well-defined questions, making learning smoother without overwhelming detail.
- For developers: Use GPT-5 mini to handle structured coding tasks, simple debugging, and clear logic checks, helping speed up development work that doesn't require deep, multi-step reasoning.
- For businesses and teams: Generate concise summaries, extract key points, and complete routine document tasks with reliable accuracy, keeping daily workflows efficient and easy to manage.
- For product teams and app builders: Build lightweight features or in-app helpers that need fast, predictable outputs, improving user experience without increasing compute requirements or latency.
- For operations and support workflows: Process well-structured requests, categorize inquiries, and provide quick guidance, helping teams automate repetitive workloads and maintain consistent service.
- For content and marketing helpers: Generate short drafts, refine messaging, and create simple content pieces quickly, making everyday writing tasks faster and easier to manage.
How to Access GPT-5 mini
Accessing GPT-5 mini is straightforward, and you can pick the method that aligns with how you work.
1. OpenAI API
You can access GPT-5 mini through the OpenAI API using an API key and an appropriate billing plan. This method works best for developers building apps, automations, or custom workflows.
2. EssayDone AI Chat
For immediate use with no technical setup, GPT-5 mini is available in EssayDone AI Chat.
It provides identical model output to the API but in an easier, more accessible interface for everyday users.
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FAQ
Here are some frequently asked questions about GPT-5 mini.
Yes. GPT-5 mini provides higher-than-average reasoning ability, with a reasoning level roughly equivalent to a mid-range rating of 3. It handles structured reasoning tasks well but is not as advanced as full GPT-5.
GPT-5 mini costs $0.25 per 1M input tokens and $2.00 per 1M output tokens. It is priced in the mid-range of the GPT-5 family.
GPT-5 Mini is optimized for well-defined, lighter-weight reasoning tasks such as step-by-step logic, structured problem solving, and concise explanations. It is ideal for users who need dependable reasoning without the cost of higher-tier models.
GPT-5 mini accepts text and image inputs and produces text outputs. It handles basic text-and-image tasks effectively, though it is not designed for advanced visual reasoning or detailed image analysis.
GPT-5 mini sits between the two models, offering stronger reasoning performance than GPT-5 nano while remaining lighter and faster than full GPT-5. It delivers a balanced mix of speed and capability.
Using GPT-5 mini in EssayDone AI Chat requires no API key, has no daily message limits, and is available with no geographical restrictions. You can access ChatGPT and many other AI models on a single platform with one payment, at a more affordable price.