But it could be the last release in OpenAI's classic LLM lineup.

GPT-4.5 API pricing appears shockingly high, costing developers $75 and $180 for 1 million tokens in and out, respectively.

OpenAI today introduced the next iteration of its AI models, GPT-4.5. GPT-4.5 is OpenAI's "best model yet" for chat purposes ... does not support Voice Mode, video, and screensharing.

video, and screensharing in ChatGPT. OpenAI is also previewing GPT‑4.5 in the Chat Completions API, Assistants API, and Batch API to developers on all paid usage tiers. However, it’s unclear ...

It also doesn’t produce multimodal output like audio or video. OpenAI’s latest ... The free tier of ChatGPT will get unlimited chat access to GPT-5.

When OpenAI first introduced ChatGPT ’s Advanced Voice Mode, I was intrigued by the idea that this might be the template for a voice assistant capable of all the Star Trek- style feats that Amazon and ...

It also does not currently support multimodal functions such as voice mode, video or screen sharing. GPT-4.5 will initially ... available for developers in the Chat Completions API, Assistants ...

Mark Chen is the chief research officer at OpenAI and he talks about the debut of GPT 4.5 in a video below. The OpenAI newest largest ... preview of GPT-4.5—our largest and best model for chat yet.