xAI launches Grok 4.7 after weeks of delays

xAI released Grok 4.7 on Monday, ending weeks of delays for a model Elon Musk first targeted for September 12. The company calls it "our most capable model for coding and knowledge work," built on a new, larger base model with extended reinforcement learning training on harder tasks.x

Performance and Pricing

Grok 4.7 arrives at the same price point as its predecessor — $2 per million input tokens and $6 per million output tokens — undercutting rivals on cost. On CursorBench 4.0, which tests longer-running coding tasks, the model scored 46.3%, compared with 40.4% for Grok 4.6 and 41.7% for GPT-5.6 Solmax. It also posted strong results on Terminal-Bench 4.0 and the Harvey Legal Agent Benchmark, where it scored 19.6% against GPT-5.6 Solmax's 2.5%.x

xAI says the model "works longer on difficult tasks, checks its own work more carefully," and was trained with reinforcement learning weighted toward problems that take many hours to complete. Grok 4.7 is available through Cursor, Grok Build, the Grok API, and third-party coding platforms and cloud model routers.x

Safety and Security

The release includes what xAI describes as an entirely new safeguard stack. Grok 4.7 topped LatchBio's biosafety benchmark at 62.4% and allowed only 3.3% of risky dual-use prompts through on HackerBench v0.3, a benchmark for malicious cyber tasks. The company has begun offering select cybersecurity partners invite-only access to Grok 4.7's red-team capabilities for defense research.x

Road to Release

The launch caps a drawn-out rollout. Musk posted on September 2 that Grok 4.7 would arrive "in 10 days," then acknowledged on September 11 that it needed "a few more days to cook". Grok 4.6 shipped on August 12, and Musk had initially suggested Grok 4.7 would follow within four weeks. Reports from Bloomberg indicate that SpaceX is also in talks to acquire data from defunct startups to feed future Grok training, with Musk saying on a recent earnings call that Grok 5, due later this year, will incorporate "the entire corpus of SpaceX data".breitbart+1