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GPT-OSS-20B vs o1
Comprehensive side-by-side LLM comparison
o1 leads with 5.0% higher average benchmark score. o1 offers 167.9K more tokens in context window than GPT-OSS-20B. o1 is $Infinity cheaper per million tokens. o1 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-OSS-20B is an open-weight large language model with 20 billion parameters from OpenAI's open-source model initiative. It targets deployments requiring a smaller, efficient model that can run on consumer or mid-tier hardware while maintaining strong reasoning and coding capabilities relative to its size.
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OpenAI
OpenAI o1, released by OpenAI in December 2024, is a reasoning-focused large language model that applies extended chain-of-thought processing before generating responses. It features a 200K token context window and native image understanding, demonstrating strong performance on STEM benchmarks requiring multi-step reasoning. o1 targets mathematics, science, and coding tasks where careful deliberation over the problem produces more accurate outputs than direct generation.
8 months newer
o1
OpenAI
2024-12-05
GPT-OSS-20B
OpenAI
2025-08-05
Pricing Comparison
Cost per million tokens (USD)
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GPT-OSS-20B
Input:$Infinity
Output:$Infinity
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o1
Input:$15.00
Output:$60.00($Infinity cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-OSS-20B
Average Score:1.3%
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o1
Average Score:6.3%(+5.0%)
Performance comparison across key benchmark categories
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GPT-OSS-20B
Agents1.3%
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o1
Agents6.3%(+5.0%)
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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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GPT-OSS-20B
1 providers
Hugging Face
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o1
1 providers
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GPT-OSS-20B
Avg Score:1.3%
Providers:1
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o1
Avg Score:6.3%(+5.0%)
Providers:1