SpaceXAI dropped Grok 4.5 and it's actually good enough to pay attention to now.
Coding and engineering: hangs with GPT 5.5 and Claude Opus 4.8. SWE Bench Pro hit 64.7%, first time beating GPT 5.5 on this one. In practice I'd put it around GLM-5.2 level.
$2/M input, $6/M output. Cheap relative to the rest of the frontier.