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GPT-5 Mini vs o4 mini
Comprehensive side-by-side LLM comparison
GPT-5 Mini leads with 5.2% higher average benchmark score. GPT-5 Mini offers 132.8K more tokens in context window than o4 mini. o4 mini is $19.50 cheaper per million tokens. Overall, GPT-5 Mini is the stronger choice for coding tasks.
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OpenAI
GPT-5 mini, released by OpenAI in August 2025, is a smaller variant from the GPT-5 family that inherits GPT-5's unified reasoning architecture and multimodal capabilities at a reduced inference cost. It targets high-volume production use cases requiring a balance of intelligence and response speed, offering GPT-5 capabilities for applications where full GPT-5 inference costs are a concern.
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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.
3 months newer
o4 mini
OpenAI
2025-04-16
GPT-5 Mini
OpenAI
2025-08
Pricing Comparison
Cost per million tokens (USD)
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GPT-5 Mini
Input:$5.00
Output:$20.00
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o4 mini
Input:$1.10
Output:$4.40($19.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-5 Mini
Average Score:19.4%(+5.2%)
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o4 mini
Average Score:14.3%
Performance comparison across key benchmark categories
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GPT-5 Mini
Reasoning19.4%(+5.2%)
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o4 mini
Reasoning14.3%
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5 Mini
1 providers
OpenAI
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o4 mini
1 providers
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GPT-5 Mini
Avg Score:19.4%(+5.2%)
Providers:1
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o4 mini
Avg Score:14.3%
Providers:1