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Gemini 1.5 Flash vs GPT OSS 120B
Comprehensive side-by-side LLM comparison
GPT OSS 120B leads with 20.1% higher average benchmark score. Gemini 1.5 Flash offers 794.6K more tokens in context window than GPT OSS 120B. Both models have similar pricing. Gemini 1.5 Flash supports multimodal inputs. GPT OSS 120B is available on 5 providers. Overall, GPT OSS 120B is the stronger choice for coding tasks.
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Gemini 1.5 Flash was created as a fast and efficient multimodal model, designed to provide quick responses while handling text, images, and other modalities. Built for applications requiring low latency and high throughput, it balances capability with speed to serve real-time and high-volume use cases.
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OpenAI
GPT-OSS 120B was developed as an open-source model release from OpenAI, designed to provide the research and developer community with access to a capable language model. Built with 120 billion parameters, it enables experimentation, fine-tuning, and deployment in contexts where open-source licensing and transparency are valued.
1 year newer
Gemini 1.5 Flash
2024-05-01
GPT OSS 120B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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Gemini 1.5 Flash
Input:$0.15
Output:$0.60
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GPT OSS 120B
Input:$0.09
Output:$0.45($0.21 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Gemini 1.5 Flash
Average Score:65.0%
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GPT OSS 120B
Average Score:85.0%(+20.1%)
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Flash
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 Flash
1 providers
Throughput: 150 tok/s
Latency: 0.3ms
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GPT OSS 120B
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Gemini 1.5 Flash
Avg Score:65.0%
Providers:1
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GPT OSS 120B
Avg Score:85.0%(+20.1%)
Providers:5