Grok 4.7 keeps Grok 4.6 pricing and speed; demos raise the task-cost question

Why it matters

• Official claim — SpaceXAI says Grok 4.7 is a notable improvement over Grok 4.6 at the same price and speed
• its official launch page lists $2 per million input tokens and $6 per million output tokens below 200k prompt tokens, and Elon Musk describes it as third behind Anthropic and OpenAI in agentic coding but significantly faster and lower-cost.
• Community evidence — collected X demos show positive one-off results for an open-world city, Blender, and an interactive SVG, while another author reports a poor Three.js rocket result at $1.59 versus about $6 for Kimi and unusually high token use in 3D/frontend work.
• These are attributed anecdotes, not comparable benchmarks: prompts, harnesses, reasoning settings, retries, environments, and selection are not controlled.
• Independent conclusion — low token price does not imply low task cost.
• Reproduce with a frozen public task set and identical harness, permissions, runtime, model settings, and acceptance tests
• run at least five randomized trials per task and model
• report first-pass success, attempts and retries, input/output/reasoning/cache tokens, wall time, tool and infrastructure spend, human rework minutes, final success, and total cost per accepted task.
• Publish prompts, container or lockfiles, seeds, and raw traces, and compare the community examples only after rerunning them under this protocol.