+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Grok-4 Heavy vs o3-mini
Comprehensive side-by-side LLM comparison
o3-mini leads with 32.4% higher average benchmark score. Grok-4 Heavy supports multimodal inputs. o3-mini is available on 2 providers. Overall, o3-mini is the stronger choice for coding tasks.
+
+
+
+
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.
+
+
+
+
OpenAI
o3-mini is a language model developed by OpenAI. The model shows competitive results across 26 benchmarks. It excels particularly in COLLIE (98.7%), MATH (97.9%), IFEval (93.9%). It supports a 300K token context window for handling large documents. The model is available through 2 API providers. Released in 2025, it represents OpenAI's latest advancement in AI technology.
5 months newer
o3-mini
OpenAI
2025-01-30
Grok-4 Heavy
xAI
2025-07-09
Performance Metrics
Context window and performance specifications
Average performance across 31 common benchmarks
+
+
+
+
Grok-4 Heavy
Average Score:15.4%
+
+
+
+
o3-mini
Average Score:47.8%(+32.4%)
+
+
+
+
Knowledge Cutoff
Training data recency comparison
o3-mini
2023-09-30
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
+
+
+
+
Grok-4 Heavy
0 providers
+
+
+
+
o3-mini
2 providers
Azure
Throughput:
+
+
+
+
Grok-4 Heavy
Avg Score:15.4%
Providers:0
+
+
+
+
o3-mini
Avg Score:47.8%(+32.4%)
Providers:2