SpaceX Unveils Grok 4.5: AI Model change Coding and Enterprise Workflows

SpaceX Corp shipped Grok 4.5 this week — a 1.5 trillion parameter model trained on tens of thousands of GB300 GPUs, and the first model built in direct collaboration with the Cursor IDE. Two numbers carry the headline: Grok 4.5 finishes a SWE-Bench Pro task on roughly 16,000 tokens where Claude Opus 4.8 burns about 67,000, and it lists input at $2 per million tokens versus $5 for Opus 4.8 and $5 for OpenAI's GPT 5.5. That's not a benchmark delta — it's a budget line item.

For the past year, the agentic coding loop has been priced per turn. Every patch, diff, tool trace, and re-feed compounds into the context window. Token cost is the silent tax on leaving a coding agent running.

---

This is an excerpt. Read the full post at otf-kit.dev/blog/spacex-grok-4-5-release — full-stack kits your AI coding agent can actually ship to production. Browse the kits →