https://x.ai/news/grok-4-5 Quick numbers from the launch page: $2/M input, $6/M output. Closed weights. No EU until mid-July. SWE Bench Pro: Fable 80.4% > Opus 4.8 69.2% > Grok 4.5 64.7% > GLM-5.2 62.1% > GPT 5.5 58.6% Token efficiency is their headline: ~16k output tokens per SWE Bench Pro task vs
