OpenAI acknowledges that GPT-4.5 is not a replacement for GPT-4o and is exploring its capabilities through this release. The model performs well on creative tasks and understanding human intent, but its limitations suggest that traditional pre-training scaling laws may no longer hold. OpenAI plans to integrate its GPT series with its reasoning models, starting with GPT-5, to improve AI capabilities. GPT-4.5, despite its challenges and high training costs, is seen as a stepping stone towards more advanced AI models.
Key takeaways:
- OpenAI has launched GPT-4.5, its largest AI model to date, but it is not considered a frontier model and is available to ChatGPT Pro subscribers and developers on paid API tiers.
- GPT-4.5 shows mixed performance, excelling in factual accuracy and creative tasks but falling short on some AI benchmarks compared to newer reasoning models.
- Despite its increased size and capabilities, GPT-4.5 is expensive to run, and OpenAI is evaluating its long-term viability in the API.
- GPT-4.5 challenges the notion of pre-training scaling laws, with OpenAI planning to combine its GPT and reasoning series in future models like GPT-5.