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o1 vs o3
Comprehensive side-by-side LLM comparison
o3 is $25.00 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
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OpenAI
OpenAI o1, released by OpenAI in December 2024, is a reasoning-focused large language model that applies extended chain-of-thought processing before generating responses. It features a 200K token context window and native image understanding, demonstrating strong performance on STEM benchmarks requiring multi-step reasoning. o1 targets mathematics, science, and coding tasks where careful deliberation over the problem produces more accurate outputs than direct generation.
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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.
4 months newer
o1
OpenAI
2024-12-05
o3
OpenAI
2025-04-16
Pricing Comparison
Cost per million tokens (USD)
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o1
Input:$15.00
Output:$60.00
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o3
Input:$10.00
Output:$40.00($25.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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o1
Average Score:-1.0%
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o3
Average Score:76.4%(+77.4%)
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Knowledge Cutoff
Training data recency comparison
o1
2023-10
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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o1
1 providers
OpenAI
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o3
1 providers
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o1
Avg Score:-1.0%
Providers:1
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o3
Avg Score:76.4%(+77.4%)
Providers:1