Fast version of Grok 4 with SOTA cost-efficiency and 2M-token context.
Meta's multimodal reasoning model built for agentic work and real-world coding.
No shared agent demos for these models yet.
No captured outputs for these models yet.
Both Grok 4 Fast and Muse Spark 1.1 are capable AI models. The best choice depends on your specific use case: consider pricing, context window, speed, and which capabilities (vision, reasoning, audio) you need.
Muse Spark 1.1 supports vision/image input, but Grok 4 Fast does not.
Key differences: only Muse Spark 1.1 supports vision input; only Muse Spark 1.1 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 4 Fast and Muse Spark 1.1 for free on idapt.app to see which performs better for your specific needs.