xAI's previous flagship excelling at enterprise tasks.
Google's high-speed thinking model for agentic workflows, chat, and coding.
No shared agent demos for these models yet.
No captured outputs for these models yet.
Based on the Capability Index, Gemini 3.5 Flash scores higher (86.2 vs 71.8). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Gemini 3.5 Flash supports vision/image input, but Grok 3 does not.
Key differences: Gemini 3.5 Flash has a notably higher capability index (14.4 point gap); only Gemini 3.5 Flash supports vision input; only Gemini 3.5 Flash offers extended reasoning mode. Compare full specs on this page.
If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Grok 3 and Gemini 3.5 Flash for free on idapt.app to see which performs better for your specific needs.