xAI's recent release of Grok 4.7 on September 21, 2026, as a coding-focused large language model with improved long-horizon task handling and competitive price-performance, sets the stage for the next iteration. Elon Musk stated mid-September that Grok 4.8, a larger 2.5-trillion-parameter model using a new C++ stack, would finish training that week and enter reinforcement learning, with Grok 4.9 and Grok 5 positioned as subsequent frontier steps toward AGI-level performance. The merged SpaceXAI entity continues rapid shipping cadence amid competition from models like GPT-6 variants and Claude Fable, while expanding availability through platforms such as Amazon Bedrock. Traders are watching for confirmation of 4.8's RL progress and any multimodal or agentic upgrades that could accelerate release, though exact timelines remain subject to typical AI development slippage.
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