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GPT-5.2 vs o4 mini
Comprehensive side-by-side LLM comparison
GPT-5.2 leads with 40.4% 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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OpenAI
OpenAI o4 mini, released by OpenAI in April 2025, is a compact reasoning model from the o4 family that combines multimodal understanding with efficient chain-of-thought processing. It features a 200K token context window and native image understanding, with strong performance on mathematics and coding benchmarks relative to its inference cost. o4 mini targets cost-sensitive applications requiring both visual reasoning and mathematical accuracy.
7 months newer
o4 mini
OpenAI
2025-04-16
GPT-5.2
OpenAI
2025-12-11
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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GPT-5.2
Average Score:54.7%(+40.4%)
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o4 mini
Average Score:14.3%
Performance comparison across key benchmark categories
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GPT-5.2
Agents63.8%(+49.5%)
Reasoning36.6%(+22.3%)
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o4 mini
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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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o4 mini
1 providers
OpenAI
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GPT-5.2
Avg Score:54.7%(+40.4%)
Providers:0
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o4 mini
Avg Score:14.3%
Providers:1