Elon Musk's xAI — operating as 'SpaceXAI' since SpaceX's February acquisition — launched Grok 4.7 on September 21, ending a delay saga that once had Musk rebranding the effort as Grok 4.8. The model uses a larger base model than Grok 4.6, a longer reinforcement-learning run weighted toward multi-hour tasks, trained self-verification and better long-context handling, plus native understanding of the Grok Bot harness.

Pricing is unchanged from Grok 4.6 at $2 per million input and $6 per million output tokens (doubling past 200K input), with a fast variant at 2x speed for 2x price. Context is 500K tokens, cutoff May 2026. Live on day one in Cursor, Grok Build, the Grok API, routers and cloud platforms.

Benchmarks are self-reported: 71.0% on DeepSWE v1.1, 46.3% on CursorBench 4.0, 64.0% on EEBench and 19.6% on Harvey's Legal Agent Benchmark. Independent Artificial Analysis numbers trail xAI's framing: its Intelligence Index scores Grok 4.7 at 46 vs 53 each for Claude Fable 5.1 and GPT-6 Astra. Note the earlier site rumor that Grok 4.7 would land 'next week' (marked debunked September 13) referred to that missed window — the model has now shipped.