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Synthesia has launched version 3.0 of its video avatar platform, adding several new features focused on interaction and realism. The main change is the introduction of "video agents" that can appear in videos, hold real-time conversations with viewers, answer or ask questions, and access company-specific information.

Other updates include more customizable avatars with natural movement, faster and more flexible voice cloning, interactive video features, and automatic translation. An AI-driven video editor and a new course format for interactive learning with avatars and video agents are also in development.

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OpenAI has reportedly reached a $500 billion valuation following a major secondary share sale, according to Reuters. Current and former OpenAI employees sold roughly $6.6 billion worth of shares to investors like SoftBank, Thrive Capital, Dragoneer, MGX, and T. Rowe Price. The deal marks a sharp jump from the previous $300 billion estimate. The report notes that OpenAI has approved more than $10 billion in secondary share sales so far.

The Information recently reported that OpenAI generated about $4.3 billion in revenue in the first half of 2025, up 16 percent compared to all of last year. However, the company is projected to spend another $80 billion by 2029.

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Perplexity is now making its AI browser "Comet" available for free. Comet includes a built-in AI assistant that helps with research, scheduling, and online shopping every time you open a new tab. Paid subscribers also get access to an email assistant and new background assistants that handle tasks automatically, but Perplexity hasn't shared details yet. A mobile version is in the works.

Video: Perplexity

As part of the Comet Plus partner program, Perplexity works with media companies like CNN, Conde Nast, Fortune, and the Washington Post. This is meant to avoid more lawsuits, since Perplexity uses content from other websites to power its answer engine without permission. Comet Plus costs $5 a month on its own, but it's included with Perplexity Pro and Max subscriptions.

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Samsung and SK are teaming up with OpenAI to boost South Korea's AI infrastructure as part of the Stargate initiative. The plan includes ramping up DRAM chip production through Samsung Electronics and SK hynix, along with building new data centers. OpenAI has signed several agreements to support the effort, including one with the Ministry of Science to scout potential data center sites outside Seoul.

The new agreements also include a separate partnership with SK Telecom to explore building an AI data center in South Korea. OpenAI has also signed deals with Samsung C&T, Samsung Heavy Industries, and Samsung SDS to evaluate options for expanding data center capacity in the country.

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