GPT-5.4 is OpenAI's current flagship, offering state-of-the-art general reasoning, native computer use, and a 272K standard context window expandable to 1M tokens. It leads most closed-model benchmarks as of April 2026 and serves as the default choice for production multimodal applications.
Pricing Breakdown
| Volume | Input Cost | Output Cost | Combined (50/50) |
|---|---|---|---|
| 1,000 tokens | $0.0025 | $0.0150 | $0.0087 |
| 10,000 tokens | $0.0250 | $0.1500 | $0.0875 |
| 100,000 tokens | $0.2500 | $1.5000 | $0.8750 |
| 1,000,000 tokens | $2.5000 | $15.0000 | $8.7500 |
Strengths
- ✓OpenAI flagship — top-tier reasoning, coding, and multimodal
- ✓Native computer use and tool search
- ✓272K standard context (expandable to 1M)
- ✓128K max output tokens
- ✓90% prompt caching discount on cached input
Weaknesses
- ✗Prompts above 272K input are billed at 2x input / 1.5x output
- ✗Premium pricing vs. GPT-5.4 mini for simple tasks
Compare GPT-5.4 With
Frequently Asked Questions
How much does GPT-5.4 cost?
GPT-5.4 costs $2.50/1M per 1M input tokens and $15.00/1M per 1M output tokens.
What is GPT-5.4's context window?
GPT-5.4 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 open source?
No, GPT-5.4 is a proprietary model by OpenAI and is not open source.
What is GPT-5.4 best used for?
GPT-5.4 is best suited for: coding, reasoning, function-calling, research, image-understanding. OpenAI flagship — top-tier reasoning, coding, and multimodal.
What is GPT-5.4's ELO score?
GPT-5.4 has an ELO score of 1420 on the LMSYS Chatbot Arena leaderboard, placing it among top-tier models.