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Gemini 2.5 Flash vs GPT OSS 120B
Comprehensive side-by-side LLM comparison
GPT OSS 120B leads with 2.7% higher average benchmark score. Gemini 2.5 Flash offers 852.0K more tokens in context window than GPT OSS 120B. GPT OSS 120B is $2.26 cheaper per million tokens. Gemini 2.5 Flash supports multimodal inputs. GPT OSS 120B is available on 5 providers. Both models have their strengths depending on your specific coding needs.
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Gemini 2.5 Flash represents a continued evolution of Google's efficient multimodal models, designed to deliver enhanced capabilities while maintaining the performance characteristics valued in the Flash series. Built to serve high-throughput applications with improved quality, it advances the balance between speed and intelligence.
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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.
2 months newer
Gemini 2.5 Flash
2025-05-20
GPT OSS 120B
OpenAI
2025-08-05
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Pricing Comparison
Cost per million tokens (USD)
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Gemini 2.5 Flash
Input:$0.30
Output:$2.50
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GPT OSS 120B
Input:$0.09
Output:$0.45($2.26 cheaper)
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Gemini 2.5 Flash
Average Score:46.9%
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GPT OSS 120B
Average Score:49.6%(+2.7%)
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Knowledge Cutoff
Training data recency comparison
Gemini 2.5 Flash
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 Flash
2 providers
Throughput: 85 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
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Gemini 2.5 Flash
Avg Score:46.9%
Providers:2
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GPT OSS 120B
Avg Score:49.6%(+2.7%)
Providers:5