A new feature in WhatsApp will let you hide your IP address from whoever you call using the app. Knowing someone’s IP address can reveal a lot of personal information such as their location and internet service provider, so having the option to hide it is a major privacy win. “This new feature provides an additional layer of privacy and security geared towards our most privacy-conscious users,” WhatsApp wrote in a blog post.

WhatsApp currently relays calls either through its own servers or by establishing a direct connection called peer-to-peer with whoever you are calling depending on network conditions. Peer-to-peer calls often provide better voice quality, but require both devices to know each other’s IP addresses.

Once you turn the new feature, known simply as "Protect IP address in calls" on, however, WhatsApp will always relay your calls through its own servers rather than establishing a peer-to-peer connection, even if it means a slight hit to sound quality. All calls will continue to remain end-to-end encrypted, even if they go through WhatsApp’s servers, the company said.

WhatsApp has been adding more privacy features over the last few months. In June, the company added a feature that let people automatically silence unknown callers. It also introduced a “Privacy Checkup” section to allow users to tune up a host of privacy settings from a single place in the app, and earlier this year, added a feature that lets people lock certain chats with a fingerprint or facial recognition.

During its first-ever developer conference on Monday, OpenAI previewed GPT-4 Turbo, a brand new version of the large language model that powers its flagship product, ChatGPT. The newest model is capable of accepting much longer inputs than previous versions — up to 300 pages of text, compared to the current limit of 50. This means that theoretically, prompts can be a lot longer and more complex, and responses might be more meaningful.

OpenAI has also updated the data that GPT-4 Turbo is trained on. The company claims that the newest model now has knowledge about the world until April 2023. The previous version was only caught up until September 2021, although recent updates to the non-Turbo GPT-4 did include the ability to browse the internet to get the latest information.

GPT-4 Turbo will also accept images as prompts directly in the chat box, wherein it can generate captions or provide a description of what the image depicts. It will also handle text-to-speech requests. And users will now be able to upload documents directly and ask the service to analyze them — a capability that other AI chatbots like Anthropic’s Claude have included for months.

For developers, using the newest model will effectively be three times cheaper. OpenAI said that it was slashing costs for input and output tokens — a unit used by large language models to understand instructions and respond with answers.

In addition to announcing its newest large language model, OpenAI revealed that ChatGPT now has more than 100 million weekly active users around the world and is used by more than 92 percent of Fortune 500 companies. The company also said that it would defend customers, including enterprises, not only against legal claims around copyright infringement that might arise as a result of using its products, but it would also pay for costs incurred as a result.

OpenAI Dev Day also saw the reveal of single-application "mini-ChatGPTs" today, small tools that are focused on a single task that can be built without even knowing how to code. GPTs created by the community can be immediately shared, and OpenAI will open a "store" where verified builders can make their creation available to anyone. 

The company didn’t announce when GPT-4 Turbo would come out of preview and be available more generally. Accessing GPT-4 currently costs $20 a month.