Read the letter: Twitter accuses Microsoft of using its data in unauthorized ways

Twitter is accusing Microsoft of utilizing the societal media company's information successful ways that were unauthorized and ne'er disclosed.

Alex Spiro, a spouse astatine Quinn Emanuel Urquhart & Sullivan and lawyer for Twitter proprietor Elon Musk, sent a missive to Microsoft connected Thursday laying retired the claims, including that the bundle institution "may person been successful usurpation of aggregate provisions" of its statement with Twitter implicit information use.

It's the latest rift among tech companies successful the increasing statement implicit who owns information that tin beryllium utilized to bid artificial quality and instrumentality learning software. The New York Times first reported connected the letter, a transcript of which was obtained by CNBC.

After Musk led a buyout of Twitter successful October and appointed himself CEO, the institution started charging for usage of its exertion programming interface, which enables developers to embed tweets into their bundle and services and entree Twitter data.

The API was antecedently escaped to usage for immoderate researchers, partners and developers who agreed to Twitter's terms. Twitter API-driven apps see Hootsuite, Sprout Social and Sprinklr.

According to the missive from Spiro to Microsoft CEO Satya Nadella and the company's board, past period Microsoft "declined to wage adjacent a discounted complaint for continued entree to Twitter's APIs and content."

As of April, Microsoft had astatine slightest 5 products that utilized the Twitter API, including the Azure cloud, Bing hunt motor and Power Platform low-code exertion improvement tools, Spiro wrote.

The statement restricts excessive usage of Twitter's programming interfaces. However, for 1 of the Microsoft services utilizing Twitter data, "account accusation outright states that it intends to let its customers to 'go astir throttling limits,'" Spiro wrote.

A Microsoft spokesperson acknowledged receipt of the missive and told CNBC the institution volition reappraisal it and "respond appropriately."

"Today we heard from a instrumentality steadfast representing Twitter with immoderate questions astir our erstwhile usage of the escaped Twitter API," the spokesperson said successful an email. "We look guardant to continuing our semipermanent concern with the company."

Musk has been openly captious of Microsoft's choky narration with OpenAI, the creator of the chatbot ChatGPT. Musk was an aboriginal backer of OpenAI, but the institution has since raised billions of dollars from Microsoft, which is embedding its AI exertion into galore halfway products.

"Microsoft has a precise beardown say, if not straight controls, OpenAI astatine this point," Musk told CNBC successful an interrogation this week. Nadella recently challenged Musk's claim successful an interrogation with CNBC's Andrew Ross Sorkin, saying Microsoft has "a noncontrolling interest" successful the startup.

Spiro did not sanction OpenAI oregon notation its ChatGPT and DALL-E applications oregon ample connection models successful the letter. He did property Microsoft for immoderate details about, "a statement of immoderate token pooling implemented successful immoderate of the Microsoft Apps, including the clip period(s) erstwhile immoderate specified token pooling occurred and the fig of tokens that were pooled."

Musk and Nadella person had different interactions of late.

Last year, Musk approached Nadella arsenic helium was raising wealth for his Twitter buyout, according to substance messages that became nationalist via tribunal filings. Nadella wrote successful 1 substance to Musk, "will for definite follow-up connected Teams feedback!" Teams is Microsoft's chat app.

Read the afloat missive from Twitter to Microsoft, here.