GPT-5.4 mini brings the core capabilities of GPT-5.4 to a faster, more efficient model optimized for high-throughput workloads. It supports text and image inputs with strong performance across reasoning, coding, and tool use, while reducing…
Model details →OpenAI: GPT-5.4 Mini vs OpenAI: o3
OpenAI: GPT-5.4 Mini wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
o3 is a well-rounded and powerful model across domains. It sets a new standard for math, science, coding, and visual reasoning tasks. It also excels at technical writing and instruction-following. Use it to think through multi-step problems…
Model details →Side-by-side comparison
| Capability | OpenAI: GPT-5.4 Mini | OpenAI: o3 | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 400K | 200K | 🏆 OpenAI: GPT-5.4 Mini |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.75 | $2.00 | 🏆 OpenAI: GPT-5.4 Mini |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $4.50 | $8.00 | 🏆 OpenAI: GPT-5.4 Mini |
| Tool / function calling First-class support for emitting structured tool calls. | Yes | Yes | Tie |
| Vision input Accepts image inputs alongside text. | Yes | Yes | Tie |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | Yes | Yes | Tie |
Frequently asked questions
Is OpenAI: GPT-5.4 Mini better than OpenAI: o3?
OpenAI: GPT-5.4 Mini wins on 3 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between OpenAI: GPT-5.4 Mini and OpenAI: o3?
Input: $0.75 vs $2.00 per 1M tokens. Output: $4.50 vs $8.00 per 1M tokens.
What context windows do OpenAI: GPT-5.4 Mini and OpenAI: o3 support?
OpenAI: GPT-5.4 Mini supports up to 400K tokens. OpenAI: o3 supports up to 200K tokens.
Do both OpenAI: GPT-5.4 Mini and OpenAI: o3 support tool calling?
OpenAI: GPT-5.4 Mini: yes. OpenAI: o3: yes.