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o1 vs o3 Pro
Comprehensive side-by-side LLM comparison
o1 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-pro, released by OpenAI in June 2025, is an extended reasoning model from the o3 family that applies more compute per response to deliver deeper, more thorough answers on complex problems. It features a 200K token context window, 100K maximum output tokens, and vision capabilities. o3-pro targets research-grade reasoning tasks, extended coding sessions, and applications where accuracy on difficult problems justifies higher inference cost and latency.
6 months newer
o1
OpenAI
2024-12-05
o3 Pro
OpenAI
2025-06-10
Pricing Comparison
Cost per million tokens (USD)
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o1
Input:$15.00
Output:$60.00($25.00 cheaper)
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o3 Pro
Input:$20.00
Output:$80.00
Performance Metrics
Context window and performance specifications
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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 Pro
1 providers
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o1
Avg Score:0.0%
Providers:1
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o3 Pro
Avg Score:0.0%
Providers:1