+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Gemini 2.5 Flash vs Grok 4 Fast
Comprehensive side-by-side LLM comparison
Grok 4 Fast leads with 30.3% higher average benchmark score. Grok 4 Fast offers 915.9K more tokens in context window than Gemini 2.5 Flash. Grok 4 Fast is $2.10 cheaper per million tokens. Overall, Grok 4 Fast is the stronger choice for coding tasks.
+
+
+
+
Gemini 2.5 Flash represents a continued evolution of Google's efficient multimodal models, designed to deliver enhanced capabilities while maintaining the performance characteristics valued in the Flash series. Built to serve high-throughput applications with improved quality, it advances the balance between speed and intelligence.
+
+
+
+
xAI
Grok 4 Fast is a multimodal language model developed by xAI. It achieves strong performance with an average score of 73.0% across 7 benchmarks. It excels particularly in SimpleQA (95.0%), HMMT 2025 (93.3%), AIME 2025 (92.0%). With a 2.0M 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 2025, it represents xAI's latest advancement in AI technology.
3 months newer
Gemini 2.5 Flash
2025-05-20
Grok 4 Fast
xAI
2025-08-28
+
+
+
+
+
+
+
+
+
+
+
+
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Gemini 2.5 Flash
Input:$0.30
Output:$2.50
+
+
+
+
Grok 4 Fast
Input:$0.20
Output:$0.50($2.10 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
+
+
+
+
Gemini 2.5 Flash
Average Score:60.6%
+
+
+
+
Grok 4 Fast
Average Score:90.9%(+30.3%)
+
+
+
+
Knowledge Cutoff
Training data recency comparison
Gemini 2.5 Flash
2025-01-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Gemini 2.5 Flash
2 providers
Throughput: 85 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
+
+
+
+
+
+
+
+
Gemini 2.5 Flash
Avg Score:60.6%
Providers:2
+
+
+
+
Grok 4 Fast
Avg Score:90.9%(+30.3%)
Providers:1