xAI
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Listed July 2026
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Multimodal Foundation
Grok 4.5
Arena #51 • score 1466 ±4
Proprietary model from xAI, listed July 2026. Arena text score 1466 (#51 of 414 entries). $2.00 input / $6.00 output per 1M tokens. 500K tokens context.
Parameters
Not disclosed
Context Window
500K tokens
Input / 1M tokens
$2.00
Output / 1M tokens
$6.00
Benchmark Results
- Arena Text Elo: 1466 (#51 of 414 on arena.ai · ±4 · 39,953 votes · variant: grok-4.5)
- AA Intelligence Index: 38.8 (Artificial Analysis v4.3 · best setting: Grok 4.5 (High) · checked 2026-10-11)
- AA Coding Index: 72.4 (Artificial Analysis v4.3 · best setting: Grok 4.5 (High) · checked 2026-10-11)
- AA Agentic Index: 41.2 (Artificial Analysis v4.3 · best setting: Grok 4.5 (High) · checked 2026-10-11)