"We're back to direct, open, clear contacts," he declared on Wednesday after their uncommon encounter with Chinese President Xi Jinping in California.
The conversation marked the first time the two had spoken face-to-face in almost a year.
Additionally, Mr. Biden stated that the two leaders had decided to have direct communication with one another.
Following the summit, which was held at a historic country house close to San Francisco, Mr. Biden said both presidents could now "pick up the phone and be directly heard quickly" and that a lack of contact was "how accidents happen."
Following the visit to Taiwan last year by US House Speaker Nancy Pelosi, China cut down military-to-military communications. Taiwan, although is self-governing, is considered Chinese territory, and Beijing has vowed to use force to conquer it if needed.
Even if there were still a lot of differences between the two, Mr. Biden claimed that Mr. Xi had "just been straight." "Some of the most helpful and fruitful discussions we've had," he added of the conversations.
Later, over a luncheon with US business executives, Mr. Xi expressed candidly his desire to work toward improving ties with the US.
He claimed that he and President Biden decided to keep up their diplomatic and cooperative efforts.
"Now that the door is open, it cannot be closed again in the China-US relationship," he declared. "More roads and bridges need to be paved between each other."
However, there remained indications of conflict between the two; Mr. Biden reiterated his belief that Mr. Xi is a despot.
Although the comments were later criticized by China's foreign ministry, it doesn't seem like they dimmed the light on what both parties are characterizing as a generally positive encounter.However, Mr. Biden said he thought Mr. Xi was a tyrant in response to a reporter's query as he was leaving the platform, indicating how tense things still are between them.
He described himself as a "dictator in the sense that he is a man who governs a nation... founded on a form of government that is very different from ours." Chinese authorities responded violently and denounced Mr. Biden's June remarks as "very foolish and reckless" after he made a similar statement.
China's foreign ministry denounced Mr. Biden's statement on Thursday, calling it "irresponsible political manipulation" and "absolutely incorrect."
Despite the fact that the two leaders' meeting was generally viewed as favorable, there was one unpleasant note.
The summary of the meeting provided by state news outlet Xinhua conspicuously lacked the reference to the "dictator." The readout, which occasionally serves as a barometer of how well or poorly the Chinese leadership views relations, mentioned significant advancements in bilateral ties.
The two sides announced many other agreements in locations that have recently become points of tension in addition to starting military communications again.
Among these were actions to stop the fentanyl supply entering the US, which has led to an increase in overdose deaths there.
Chinese manufacturing companies supply precursor chemicals that can be used to manufacture synthetic opioids, in addition to the opioid itself. Mr. Biden declared, "We're taking efforts to severely curtail the flow of pill presses and precursor chemicals from China to the Western Hemisphere."
China will specifically target businesses that produce such precursor chemicals as per the agreement. "It will prevent deaths," Mr. Biden stated to the press.
The two leaders also spoke about the situation in Gaza and Israel. Reporters were informed by a senior US source that Mr. Biden had requested China to use its clout with Iran to persuade it to refrain from taking actions that might be interpreted as confrontational.
In addition, the two giants decided to work together on research on artificial intelligence (AI) and spoke extensively on Taiwan, which Mr. Xi described as "the largest, most hazardous issue in US-China ties," according to a US official.
China announced after the discussions that the two forces' communications were reestablished "on the basis of equality and respect."
Despite the great anticipation for the meeting held in conjunction with the Asia-Pacific Economic Co-operation (Apec) summit, representatives from both parties downplayed the likelihood of significant progress being made.
According to a senior US administration official, "the aims here really are about controlling the competition, limiting the downside of risk - of violence, and ensuring channels of communication are available."
When a suspected Chinese surveillance balloon was shot down above US airspace in February, relations worsened.
The highest-ranking Washington official to visit Beijing in nearly five years was US Secretary of State Antony Blinken, who paid the Chinese capital a visit in June. He first met Foreign Minister Qin Gang, and later President Xi.
Even though there were still significant problems between the two nations, Mr. Blinken expressed his expectation that there would be "better conversations [and] better engagement going forward" as he concluded his tour.