OpenAI: GPT-5 Mini
The OpenAI GPT-5 Mini is designed to handle text, images, and file inputs within a vast context length of 400,000 tokens, making it suitable for complex tasks that require extensive data processing. It supports reasoning and integrates tools, allowing for more dynamic interactions. However, the model does not offer structured output or open weights. For those prioritizing cost-effectiveness and broad capability across multiple input modalities, GPT-5 Mini might be worth considering. With a blended benchmark score of 33.2 across three independent benchmarks, it performs adequately but may not excel in specialized tasks. The pricing at $0.25 per million input tokens and $2.0 per million output tokens makes it relatively expensive compared to other models.
Benchmark results
Independent, published benchmarks. Blended score 33.2 across 3 benchmarks, last refreshed 2026-08-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 42.6 |
| AI Index Coding | software engineering tasks | 25.7 |
| AI Index Agentic | multi-step tool-using tasks | 32.4 |
- 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 |
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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.