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Gemini 3 Pro vs GPT-OSS-20B
Comprehensive side-by-side LLM comparison
Gemini 3 Pro leads with 34.9% higher average benchmark score. Gemini 3 Pro offers 876.1K more tokens in context window than GPT-OSS-20B. Gemini 3 Pro is $Infinity cheaper per million tokens. Gemini 3 Pro supports multimodal inputs. Overall, Gemini 3 Pro is the stronger choice for coding tasks.
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Google DeepMind
Gemini 3 Pro, released by Google in November 2025, is a large language model from the Gemini 3 family designed for complex reasoning, broad world knowledge, and multi-step problem solving. It features a 1M token context window, 64K maximum output tokens, and native multimodal input including text, images, audio, and video. Gemini 3 Pro targets research-grade reasoning, advanced data analysis, and applications requiring comprehensive understanding across diverse input formats.
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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.
3 months newer
GPT-OSS-20B
OpenAI
2025-08-05
Gemini 3 Pro
Google DeepMind
2025-11-18
Pricing Comparison
Cost per million tokens (USD)
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Gemini 3 Pro
Input:$2.50
Output:$20.00($Infinity cheaper)
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GPT-OSS-20B
Input:$Infinity
Output:$Infinity
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Gemini 3 Pro
Average Score:75.6%(+34.9%)
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GPT-OSS-20B
Average Score:40.7%
Performance comparison across key benchmark categories
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Gemini 3 Pro
Science91.9%(+11.8%)
Agents59.2%(+57.9%)
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GPT-OSS-20B
Provider Availability & Performance
Available providers and their performance metrics
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Gemini 3 Pro
2 providers
Google Cloud Vertex AI
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GPT-OSS-20B
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Gemini 3 Pro
Avg Score:75.6%(+34.9%)
Providers:2
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GPT-OSS-20B
Avg Score:40.7%
Providers:1