The Financial Times reported on July 31 that Amazon has finalized its full $50 billion investment in OpenAI, securing approximately a 5% stake. This move was enabled after Microsoft revised its OpenAI agreement on April 27, lifting the exclusivity that had previously restricted rival cloud providers. Amazon's investment also includes a broader partnership, making AWS the exclusive third-party cloud distributor for OpenAI Frontier and committing OpenAI to consume roughly 2 gigawatts of Trainium capacity. Additionally, an existing $38 billion AWS agreement was expanded by $100 billion over eight years. Microsoft, while relinquishing exclusivity, remains OpenAI's primary cloud partner and retains a non-exclusive license to OpenAI models and products through 2032.