Microsoft Copilot, formerly known as Bing Chat, is an chatbot developed by Microsoft and released in 2023. Copilot utilizes the Microsoft Prometheus model, built upon OpenAI's GPT-4 foundational large language model, which in turn has been fine-tuned using both supervised and reinforcement learning techniques. Copilot can serve as a chat tool, write different types of content from poems to songs to stories to reports, provide the user with information and insights on the website page open in the browser, and use its Microsoft Designer feature to design a logo, drawing, artwork, or other image based on text. Microsoft Designer supports over a hundred languages.

Copilot can also cite its sources, similarly to Google's Bard after its Gemini integration, xAI's Grok, and OpenAI's ChatGPT, which Copilot's conversational interface style appears to mimic. Copilot is capable of understanding and communicating in major languages including English, French, Italian, Chinese, Japanese, and Portuguese, but also dialects such as Bavarian. The chatbot is designed to function primarily in Microsoft Edge, Skype, or the Bing app, through a dedicated webpage or internally using built-in app features.
Facebook users have the option to share their searches with their Facebook friends using Facebook Connect.

On June 10, 2013, Apple announced that it would be dropping Google as its web search engine in favor of Bing. This feature is only integrated with iOS 7 and higher and for users with an iPhone 4S or higher as the feature is only integrated with Siri, Apple's personal assistant.
Windows 8.1 includes Bing "Smart Search" integration, which processes all queries submitted through the Windows Start Screen.
Bing Translator is a user facing translation portal provided by Microsoft to translate texts or entire web pages into different languages. All translation pairs are powered by the Microsoft Translator, a statistical machine translation platform and web service, developed by Microsoft Research, as its backend translation software. Two transliteration pairs (between Chinese (Simplified) and Chinese (Traditional)) are provided by Microsoft's Windows International team. As of September 2020, Bing Translator offers translations in 70 different language systems.
In 2015 Microsoft announced its knowledge and action API to correspond with Google's Knowledge graph with 1 billion instances and 20 billion related facts.
The idea for a prediction engine was suggested by Walter Sun, Development Manager for the Core Ranking team at Bing, when he noticed that school districts were more frequently searched before a major weather event in the area was forecasted, because searchers wanted to find out if a closing …

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Bing is available in many languages and has been localized for many countries. Even if the language of the search and of the results are the same, Bing delivers substantially different results for different parts of the world.
Bing allows webmasters to manage the web crawling status of their own websites through Bing Webmaster Center. Users may also submit contents to Bing via the Bing Local Listing Center, which allows businesses to add business listings onto Bing Maps and Bing Local.
Bing Mobile allows users to conduct search queries on their mobile devices, either via the mobile browser or a downloadable mobile application.
Bing News (previously Live Search News) is a news aggregator powered by artificial intelligence.

In August 2015 Microsoft announced that Bing News for mobile devices added algorithmic-deduced "smart labels" that essentially act as topic tags, allowing users to click through and explore possible relationships between different news stories. The feature emerged as a result from Microsoft research that found out about 60% of the people consume news by only reading headlines, rather than read the articles. Other labels that have been deployed since then include publisher logos and fact-check tags.

The Bing Bar, a browser extension toolbar that replaced the MSN Toolbar, provides users with links to Bing and MSN content from within their web browser without needing to navigate away from a web page they are already on. The user can customize the theme and color scheme of the Bing Bar and choose which MSN content buttons to display. Bing Bar also has the local weather forecast and stock market positions.

The Bing Bar integrates with the Bing search engine. It allows searches on other Bing services such as Images, Video, News and Maps. When users perform a search on a different search engine, the Bing Bar's search box automatically populates itself, allowing the user to view the results from Bing, should it be desired.

Bing Bar also links to Outlook.com, Skype and Facebook.
Microsoft released a beta version of Bing Desktop, a program developed to allow users to search Bing from the desktop, on April 4, 2012. The production release followed on April 24, supporting Windows 7 only. Upon the release of version 1.1 in December 2012 it supported Windows XP and higher.

Bing Desktop allows users to initiate a web search from the desktop, view news headlines, automatically set their background to the Bing homepage image, or choose a background from the previous nine background images.

A similar program, the Bing Search gadget, was a Windows Sidebar Gadget that used Bing to fetch the user's search results and render them directly in the gadget. Another gadget, the Bing Maps gadget, displayed real-time traffic conditions using Bing Maps. The gadget provided shortcuts to driving directions, local search and full-screen traffic view of major US and Canadian cities, including Atlanta, Boston, Chicago, Denver, Detroit, Houston, Los Angeles, Milwaukee, Montreal, New York City, Oklahoma City, Ottawa, Philadelphia, Phoenix, Pittsburgh, Portland, Providence, Sacramento, Salt Lake City, San Diego, San Francisco, Seattle, St. Louis, Tampa, Toronto, Vancouver, and Washington, D.C.

Prior to October 30, 2007, the gadgets were known as Live Search gadget and Live Search Maps gadget; both gadgets were removed from Windows Live Gallery due to possible security concerns. The Live Search Maps gadget was made available for download again on January 24, 2008 with the security concern addressed. However, around the introduction of Bing in June 2009 both gadgets were removed again.