GPT-4.5
ECI#126
137GPT-4.5 is a closed-weights model from OpenAI, released February 27, 2025. It has an ECI score of 137 and ranks 126th of 249 tracked models. At the time of its release, it ranked 6th of 113 tracked models. At $75/Mtok for input tokens and $150/Mtok for output tokens, it is more expensive per token than similarly-capable models.
Input price$75 / 1M tokens
Output price$150 / 1M tokens
ParametersUnknown
Training compute3.8e26 FLOP
GPT-4.5 vs select alternatives
Reasoning
| Domain | Benchmark | GPT-4.5 | |||
|---|---|---|---|---|---|
ECI scoreBest score 166 | 137 | 136 | 140 | 136 | |
| Ranking | #126 | #130 | #107 | #129 | |
| Conceptual reasoning | SimpleBenchBest score 81.9% | ||||
ARC-AGI-2Best score 95.0% | |||||
ARC-AGI-1Best score 98.5% | |||||
| Mathematics | MATH Level 5Best score 98.1% | ||||
OTIS Mock AIME 2024-2025Best score 100.0% | |||||
| Science | GPQA DiamondBest score 95.8% | ||||
| Software engineering | Aider PolyglotBest score 88.0% | ||||
CybenchBest score 93.0% | |||||
| Other | LiveBenchBest score 82.3% |
