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GPT OSS 20B vs o1
Comprehensive side-by-side LLM comparison
o1 leads with 9.7% higher average benchmark score. o1 offers 37.9K more tokens in context window than GPT OSS 20B. GPT OSS 20B is $74.75 cheaper per million tokens. GPT OSS 20B is available on 4 providers. Overall, o1 is the stronger choice for coding tasks.
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OpenAI
GPT-OSS 20B was created as a smaller open-source variant, designed to balance capability with accessibility for researchers and developers. Built with 20 billion parameters, it provides a more approachable entry point for those seeking to work with open-source language models while benefiting from OpenAI's architectural insights.
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OpenAI
o1 was developed as part of OpenAI's reasoning-focused model series, designed to spend more time thinking before responding. Built to excel at complex reasoning tasks in science, coding, and mathematics, it employs extended internal reasoning processes to solve harder problems than traditional language models through careful step-by-step analysis.
7 months newer
o1
OpenAI
2024-12-17
GPT OSS 20B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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GPT OSS 20B
Input:$0.05
Output:$0.20($74.75 cheaper)
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o1
Input:$15.00
Output:$60.00
Performance Metrics
Context window and performance specifications
Average performance across 3 common benchmarks
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GPT OSS 20B
Average Score:70.5%
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o1
Average Score:80.2%(+9.7%)
Provider Availability & Performance
Available providers and their performance metrics
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GPT OSS 20B
4 providers
Groq
Throughput: 1000 tok/s
Latency: 0.38ms
Novita
OpenAI
Throughput: 115 tok/s
Latency: 5.2ms
ZeroEval
Throughput: 1000 tok/s
Latency: 0.38ms
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GPT OSS 20B
Avg Score:70.5%
Providers:4
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o1
Avg Score:80.2%(+9.7%)
Providers:2