Compare, 2 models
Side by side.
GPT-5.4 Pro and GPT-5.5 on every board at least two of them share. Blue marks the best in each row.
Specs
List prices, context and published output speed. Blue marks the best in each row.
| Spec | GPT-5.4 ProOpenAI | GPT-5.5OpenAI |
|---|---|---|
| Lab | OpenAI | OpenAI |
| Type | Language | Language |
| Released | Mar 5, 2026 | Apr 23, 2026 |
| Input price$ per 1M tokens | $30.00 | $5.00 |
| Output price$ per 1M tokens | $180.00 | $30.00 |
| Blended price3 input tokens per output | $67.50 | $11.25 |
| Contexttokens | 1.05M | 1.05M |
| Open weights | No | No |
Benchmarks
Every board where at least two of these models have a published score. Each score links to its source.
| Board | GPT-5.4 ProOpenAI | GPT-5.5OpenAI |
|---|---|---|
| Epoch Capabilities IndexOverall, higher is better | 160 | 160 |
| ARC-AGI-2Reasoning and knowledge, higher is better | 83.3%xhigh setting | 85.0%xhigh setting |
| FrontierMath Tiers 1-3Reasoning and knowledge, higher is better | 82.5%xhigh setting | 85.3%xhigh setting |
| GPQA DiamondReasoning and knowledge, higher is better | 94.6%xhigh setting | 94.0%xhigh setting |
n/a means the board has not published a score for that model.