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o3 vs o4 mini
Comprehensive side-by-side LLM comparison
o3 leads with 29.3% higher average benchmark score. o4 mini is $44.50 cheaper per million tokens. Overall, o3 is the stronger choice for coding tasks.
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OpenAI
OpenAI o3, released by OpenAI in April 2025, is a large reasoning model that applies extended chain-of-thought processing to deliver improved performance on complex math, science, and coding tasks. It features a 200K token context window and native image understanding, with demonstrated strong results on mathematics and software engineering benchmarks. o3 targets demanding analytical and engineering tasks where deliberate, multi-step reasoning produces significantly better outcomes than direct generation.
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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.
Launched on the same date
o3
OpenAI
2025-04-16
o4 mini
OpenAI
2025-04-16
Pricing Comparison
Cost per million tokens (USD)
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o3
Input:$10.00
Output:$40.00
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o4 mini
Input:$1.10
Output:$4.40($44.50 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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o3
Average Score:42.1%(+29.3%)
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o4 mini
Average Score:12.9%
Performance comparison across key benchmark categories
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o3
Agents30.8%(+5.5%)
Reasoning19.2%(+4.9%)
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o4 mini
Provider Availability & Performance
Available providers and their performance metrics
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o3
1 providers
OpenAI
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o4 mini
1 providers
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o3
Avg Score:42.1%(+29.3%)
Providers:1
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o4 mini
Avg Score:12.9%
Providers:1