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Gemini 2.5 Pro vs GPT OSS 20B
Comprehensive side-by-side LLM comparison
Gemini 2.5 Pro leads with 6.0% higher average benchmark score. Gemini 2.5 Pro offers 852.0K more tokens in context window than GPT OSS 20B. GPT OSS 20B is $11.00 cheaper per million tokens. Gemini 2.5 Pro supports multimodal inputs. GPT OSS 20B is available on 4 providers. Overall, Gemini 2.5 Pro is the stronger choice for coding tasks.
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Gemini 2.5 Pro was developed as Google's most intelligent AI model, designed to comprehend vast datasets and challenging problems from diverse information sources including text, audio, images, and video. Built to handle complex reasoning and multi-step problem solving, it represents Google's flagship offering for enterprise and advanced applications.
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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.
2 months newer
Gemini 2.5 Pro
2025-05-20
GPT OSS 20B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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Gemini 2.5 Pro
Input:$1.25
Output:$10.00
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GPT OSS 20B
Input:$0.05
Output:$0.20($11.00 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Gemini 2.5 Pro
Average Score:50.4%(+6.0%)
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GPT OSS 20B
Average Score:44.4%
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Knowledge Cutoff
Training data recency comparison
Gemini 2.5 Pro
2025-01-31
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 2.5 Pro
2 providers
Throughput: 85 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
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Gemini 2.5 Pro
Avg Score:50.4%(+6.0%)
Providers:2
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GPT OSS 20B
Avg Score:44.4%
Providers:4