GPT-5.4 mini is OpenAI's mid-tier workhorse: close to flagship quality on most tasks at a fraction of the price. It is the default choice for high-volume API applications that still need good reasoning and full multimodal support.
Pricing Breakdown
| Volume | Input Cost | Output Cost | Combined (50/50) |
|---|---|---|---|
| 1,000 tokens | $0.0008 | $0.0045 | $0.0026 |
| 10,000 tokens | $0.0075 | $0.0450 | $0.0262 |
| 100,000 tokens | $0.0750 | $0.4500 | $0.2625 |
| 1,000,000 tokens | $0.7500 | $4.5000 | $2.6250 |
Strengths
- ✓Strong mid-tier quality close to GPT-5.4 at 1/3 the price
- ✓Fast inference and low latency
- ✓Same 272K context window as flagship
- ✓Supports prompt caching and batch discounts
Weaknesses
- ✗Weaker on the most demanding reasoning tasks vs. GPT-5.4
- ✗Slightly pricier than Gemini 2.5 Flash for similar use cases
Compare GPT-5.4 mini With
Frequently Asked Questions
How much does GPT-5.4 mini cost?
GPT-5.4 mini costs $0.75/1M per 1M input tokens and $4.50/1M per 1M output tokens.
What is GPT-5.4 mini's context window?
GPT-5.4 mini has a context window of 272K tokens, which means it can process up to 272,000 tokens in a single request.
Is GPT-5.4 mini open source?
No, GPT-5.4 mini is a proprietary model by OpenAI and is not open source.
What is GPT-5.4 mini best used for?
GPT-5.4 mini is best suited for: customer-support, data-extraction, fast-response, function-calling, summarization. Strong mid-tier quality close to GPT-5.4 at 1/3 the price.
What is GPT-5.4 mini's ELO score?
GPT-5.4 mini has an ELO score of 1360 on the LMSYS Chatbot Arena leaderboard, placing it among top-tier models.