xAI
SpaceXAI's frontier model for coding, agentic tasks, knowledge work, and configurable reasoning.
48.1
Quality Score
1282
Arena ELO
Undisclosed
Parameters
500K
Context
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
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Jul 2026
Released
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
Introducing Grok 4.5
xAI reports that Grok 4.5 scored 83.3% on Terminal-Bench 2.1 and resolved 64.7% of SWE-Bench Pro tasks.
View source1282
ELO Score
1273 - 1291
95% Confidence
+/-9 points
5.7K
Battles
Aug 23, 2026
Last Updated