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Moonshot AI releases Kimi K3, a 2.8 trillion parameter open-weight model achieving frontier-class performance Open source release
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TLDRocket
22 September 2026
SpaceX’s latest AI move centers on something more practical than flash: long-horizon processing wrapped around Grok 4.7, plus a tighter set of safety safeguards. The company says it evaluated the model on multiple benchmarks and then focused on what matters for real tasks—keeping track of intent over longer sequences, where most assistants start to forget why you asked in the first place. The cost numbers are the tell. SpaceX reports Grok 4.7 clearing CursorBench 4.0 tasks at an average $4.69 per task, which frames “capability” in the one unit finance teams can actually compare.
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