+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Gemini 1.5 Flash vs Grok-4 Heavy
Comprehensive side-by-side LLM comparison
Gemini 1.5 Flash leads with 36.7% higher average benchmark score. Overall, Gemini 1.5 Flash is the stronger choice for coding tasks.
+
+
+
+
Gemini 1.5 Flash is a multimodal language model developed by Google. It achieves strong performance with an average score of 66.8% across 22 benchmarks. It excels particularly in XSTest (97.0%), HellaSwag (86.5%), GSM8k (86.2%). With a 1.1M token context window, it can handle extensive documents and complex multi-turn conversations. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents Google's latest advancement in AI technology.
+
+
+
+
xAI
Grok-4 Heavy is a multimodal language model developed by xAI. It achieves strong performance with an average score of 79.5% across 6 benchmarks. It excels particularly in AIME 2025 (100.0%), HMMT25 (96.7%), GPQA (88.4%). As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2025, it represents xAI's latest advancement in AI technology.
1 year newer
Gemini 1.5 Flash
2024-05-01
Grok-4 Heavy
xAI
2025-07-09
Performance Metrics
Context window and performance specifications
Average performance across 27 common benchmarks
+
+
+
+
Gemini 1.5 Flash
Average Score:54.4%(+36.7%)
+
+
+
+
Grok-4 Heavy
Average Score:17.7%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Flash
2023-11-01
Grok-4 Heavy
2024-12-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Gemini 1.5 Flash
1 providers
Throughput: 150 tok/s
Latency: 0.3ms
+
+
+
+
Grok-4 Heavy
+
+
+
+
Gemini 1.5 Flash
Avg Score:54.4%(+36.7%)
Providers:1
+
+
+
+
Grok-4 Heavy
Avg Score:17.7%
Providers:0