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Gemini 1.5 Pro vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
GPT OSS 20B leads with 5.9% higher average benchmark score. Gemini 1.5 Pro offers 1.8M more tokens in context window than GPT OSS 20B. GPT OSS 20B is $12.25 cheaper per million tokens. Gemini 1.5 Pro supports multimodal inputs. GPT OSS 20B is available on 4 providers. Overall, GPT OSS 20B is the stronger choice for coding tasks.
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Gemini 1.5 Pro was introduced as Google's advanced multimodal model with an expanded context window, designed to comprehend and reason across long documents, videos, and audio. Built to handle complex, information-rich tasks, it brought breakthrough capabilities in processing extended context while maintaining high-quality reasoning and generation.
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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.
1 year newer
Gemini 1.5 Pro
2024-05-01
GPT OSS 20B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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Gemini 1.5 Pro
Input:$2.50
Output:$10.00
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GPT OSS 20B
Input:$0.05
Output:$0.20($12.25 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Gemini 1.5 Pro
Average Score:72.5%
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GPT OSS 20B
Average Score:78.4%(+5.9%)
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Pro
2023-11-01
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Gemini 1.5 Pro
1 providers
Throughput: 85 tok/s
Latency: 0.7ms
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GPT OSS 20B
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Gemini 1.5 Pro
Avg Score:72.5%
Providers:1
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GPT OSS 20B
Avg Score:78.4%(+5.9%)
Providers:4