OpenAI: GPT-5.4 Mini
The OpenAI GPT-5.4 Mini is a language model that supports multiple input modalities, including text, images, and files, with a maximum context length of 400,000 tokens. It also supports tools and reasoning capabilities, but its structured output is unspecified. This model may be worth shortlisting for those seeking a high-capacity language model that can handle diverse inputs. Its price point is $0.75 per million input tokens and $4.5 per million output tokens, which could be competitive depending on the specific use case. The model's blended benchmark score of 42.0 across one independent benchmark suggests it may perform well in certain tasks.
Benchmark results
Independent, published benchmarks. Blended score 37.7 across 1 benchmark, last refreshed 2026-10-13. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 39.7 |
- Model ID
- openai/gpt-5.4-mini
- Vendor
- openai
- Released
- March 2026
- Tokenizer
- GPT
- Input Modalities
- file, image, text
- 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 $0.75/M input and $4.50/M output rates. Run your own numbers →
| Job | Tokens | Cost |
|---|---|---|
| Summarize a 50-page report | 30k in / 1.5k out | $0.03 |
| Classify 1,000 customer emails | 500k in / 50k out | $0.60 |
| A month of a busy support chatbot | 5M in / 2M out | $12.75 |
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Quick answers
- How much does OpenAI: GPT-5.4 Mini cost?
- $0.75 per million input tokens and $4.50 per million output tokens.
- What is OpenAI: GPT-5.4 Mini's context window?
- 400,000 tokens, roughly 600 pages of text in a single request.
- Does OpenAI: GPT-5.4 Mini support tool calling?
- It supports tool calling, structured output, a reasoning mode.
- Can OpenAI: GPT-5.4 Mini process images?
- Yes, it accepts image input.