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GPT-5.2 vs Grok 3
Comprehensive side-by-side LLM comparison
GPT-5.2 leads with 76.6% higher average benchmark score. Overall, GPT-5.2 is the stronger choice for coding tasks.
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OpenAI
GPT-5.2, released by OpenAI on December 11, 2025, is a large language model from the GPT-5 family that improves on GPT-5 in general intelligence, long-context understanding, agentic tool-calling, and vision. It features a 400K token context window, 128K maximum output tokens, and a knowledge cutoff of August 2025. GPT-5.2 targets long-context coding tasks, extended document analysis, and complex agentic workflows requiring reliable instruction following.
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xAI
Grok 3, released by xAI in February 2025, is a large language model trained on xAI's Colossus supercluster with substantially increased compute over previous generations. It features a 1M token context window, RL-enhanced Think mode for extended reasoning, and demonstrated strong results on mathematics, coding, and scientific benchmarks. Grok 3 targets complex reasoning, real-time information tasks via X platform integration, and agentic workflows via the xAI API.
9 months newer
Grok 3
xAI
2025-02-17
GPT-5.2
OpenAI
2025-12-11
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-5.2
Average Score:77.9%(+76.6%)
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Grok 3
Average Score:1.3%
Performance comparison across key benchmark categories
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GPT-5.2
Agents77.9%(+76.6%)
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Grok 3
Agents1.3%
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Knowledge Cutoff
Training data recency comparison
GPT-5.2
2025-08
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.2
0 providers
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Grok 3
1 providers
xAI
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GPT-5.2
Avg Score:77.9%(+76.6%)
Providers:0
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Grok 3
Avg Score:1.3%
Providers:1