OpenAI: GPT-5.4 Mini
The OpenAI GPT-5.4 Mini is a language model that accepts text, image, and file input and can handle long context lengths of up to 400,000 tokens. It also supports tools, reasoning capabilities, but does not provide structured output. This model may be worth considering for those who need to process large amounts of data or integrate with other tools, given its price point of $0.75 per million input tokens and $4.5 per million output tokens. Its benchmark scores are respectable, with a blended score of 54.6 across three independent benchmarks; however, its coverage is limited to just three benchmarks, which may limit its comprehensive evaluation.
Benchmark results
Independent, published benchmarks. Blended score 54.6 across 3 benchmarks, last refreshed 2026-09-08. How scoring works →
| Benchmark | Measures | Score |
|---|---|---|
| AI Index | broad capability composite | 40.6 |
| AI Index Coding | software engineering tasks | 92.5 |
| AI Index Agentic | multi-step tool-using tasks | 32.4 |
- 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 |
Category rankings
Where OpenAI: GPT-5.4 Mini places across the 1 category it ranks in. How we rank →
| # | Category | Score |
|---|---|---|
| #23 | Image CaptioningVision · of 25 ranked | 120 |
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-5.4 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.