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Prime Intellect Open-Sources Prime Agent, an RLM-based Coding Agent Using Persistent IPython Kernel Open source release
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TLDRocket
22 September 2026
The biggest AI thread today is SpaceX putting its muscle behind an unusual choice of venue: shipping Grok 4.7 as a commercial model with explicit, measurable performance claims and a clearer stance on long-horizon behavior. SpaceX says Grok 4.7 adds long-horizon processing—basically the ability to keep working across extended, multi-step tasks—while also layering in safety upgrades and evaluating the model across multiple benchmarks. The company’s most concrete datapoint is cost: it reports Grok 4.7 completed CursorBench 4.0 tasks at an average $4.69 per task, a reminder that capability is only half the story when customers are pricing every prompt.
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