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Grok 4 Fast vs Grok-1.5V
Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
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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.
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xAI
Grok 1.5V was introduced as a vision-enabled variant of Grok 1.5, designed to understand and reason about both images and text. Built to extend Grok's capabilities into multimodal applications, it enables visual question answering and image analysis alongside textual understanding.
1 year newer
Grok-1.5V
xAI
2024-04-12
Grok 4 Fast
xAI
2025-08-28
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Performance Metrics
Context window and performance specifications
Provider Availability & Performance
Available providers and their performance metrics
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Grok 4 Fast
1 providers
xAI
Throughput: 90 tok/s
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Grok-1.5V
0 providers
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Grok 4 Fast
Avg Score:0.0%
Providers:1
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Grok-1.5V
Avg Score:0.0%
Providers:0