modelgrep

Google: Gemini 3.1 Pro Preview vs xAI: Grok 4.5

Google: Gemini 3.1 Pro Preview and xAI: Grok 4.5 are evenly matched; the right pick depends on your priorities.

MetricGoogle: Gemini 3.1 Pro PreviewxAI: Grok 4.5
Intelligence Index46.553.8
Coding Index68.872.4
GPQA Diamond94%93%
Design Arena Elo1347
Speed (tokens/sec)10174
Latency2.9s655ms
Input price /M$2.00$2.00
Output price /M$12.00$6.00
Context window1.0M500K
CapabilitiesReasoningToolsJSONVisionAudioReasoningToolsJSONVision