OpenAI: GPT-5 Mini
The OpenAI GPT-5 Mini is a language model that supports input through multiple modalities: text, image, and file. It has a high context length of 400,000 tokens, allowing for complex conversations and in-depth processing. Additionally, it can perform reasoning tasks and supports the use of tools. This model may be worth considering for those who require robust input handling and advanced reasoning capabilities at a relatively high price point. With a blended benchmark score of 23.8 across three independent benchmarks, the GPT-5 Mini demonstrates strong performance in certain areas. However, its cost per million tokens ($2.0 output) may be prohibitively expensive for some users. It is essential to weigh these factors against other models on this site before making an informed decision.
Benchmark results
Independent, published benchmarks. Blended score 23.8 across 3 benchmarks, last refreshed 2026-09-07. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 30.4 |
| AI Index Coding | software engineering tasks | 25.7 |
| AI Index Agentic | multi-step tool-using tasks | 14.8 |
- Model ID
- openai/gpt-5-mini
- Vendor
- openai
- Released
- August 2025
- Tokenizer
- GPT
- Input Modalities
- text, image, file
- Output Modalities
- text
- Max Output
- 128,000 tokens
- Tool Calling
- ✓ supported
- Structured Output
- ✓ supported
- Reasoning Mode
- ✓ supported
- Vision
- ✓ accepts images
- Audio
- no
- Moderated
- yes
What it costs in practice
Computed from the current $0.25/M input and $2.00/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.01 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.23 |
| A month of a busy support chatbot | 5M in / 2M out | $5.25 |
Similar models
OpenAI: GPT-5.6 Luna Pro
OpenAI: GPT-5.6 Luna Pro (batch)
OpenAI: GPT-5.6 Luna
OpenAI: GPT-5.6 Luna (batch)
OpenAI: GPT-5.6 Terra Pro
OpenAI: GPT-5.6 Terra Pro (batch)
Quick answers
- How much does OpenAI: GPT-5 Mini cost?
- $0.25 per million input tokens and $2.00 per million output tokens.
- What is OpenAI: GPT-5 Mini's context window?
- 400,000 tokens, roughly 600 pages of text in a single request.
- Does OpenAI: GPT-5 Mini support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: GPT-5 Mini process images?
- Yes, it accepts image input.