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Gemini 1.5 Flash vs GPT OSS 120B
Comprehensive side-by-side LLM comparison
Gemini 1.5 Flash leads with 38.4% 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, Gemini 1.5 Flash is the stronger choice for coding tasks.
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Gemini 1.5 Flash is a multimodal language model developed by Google. It achieves strong performance with an average score of 66.8% across 22 benchmarks. It excels particularly in XSTest (97.0%), HellaSwag (86.5%), GSM8k (86.2%). With a 1.1M token context window, it can handle extensive documents and complex multi-turn conversations. The model is available through 1 API provider. As a multimodal model, it can process and understand text, images, and other input formats seamlessly. Released in 2024, it represents Google's latest advancement in AI technology.
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OpenAI
GPT OSS 120B is a language model developed by OpenAI. It achieves strong performance with an average score of 61.7% across 7 benchmarks. It excels particularly in MMLU (90.0%), CodeForces (87.4%), GPQA (80.1%). It supports a 262K token context window for handling large documents. The model is available through 5 API providers. It's licensed for commercial use, making it suitable for enterprise applications. Released in 2025, it represents OpenAI's latest advancement in AI technology.
1 year newer
Gemini 1.5 Flash
2024-05-01
GPT OSS 120B
OpenAI
2025-08-05
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 27 common benchmarks
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Gemini 1.5 Flash
Average Score:54.4%(+38.4%)
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GPT OSS 120B
Average Score:16.0%
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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:54.4%(+38.4%)
Providers:1
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GPT OSS 120B
Avg Score:16.0%
Providers:5