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Gemini 1.5 Flash vs GPT-5
Comprehensive side-by-side LLM comparison
GPT-5 leads with 19.2% higher average benchmark score. Gemini 1.5 Flash offers 528.8K more tokens in context window than GPT-5. Gemini 1.5 Flash is $10.50 cheaper per million tokens. Overall, GPT-5 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-5 represents the next generation of OpenAI's foundational models, developed to advance the frontier of AI capabilities in reasoning, knowledge, and general intelligence. Built to push beyond the limitations of GPT-4, it incorporates architectural and training improvements designed to enhance performance across diverse tasks and domains.
1 year newer
Gemini 1.5 Flash
2024-05-01
GPT-5
OpenAI
2025-08-07
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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($10.50 cheaper)
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GPT-5
Input:$1.25
Output:$10.00
Performance Metrics
Context window and performance specifications
Average performance across 5 common benchmarks
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Gemini 1.5 Flash
Average Score:68.9%
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GPT-5
Average Score:88.1%(+19.2%)
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Knowledge Cutoff
Training data recency comparison
Gemini 1.5 Flash
2023-11-01
GPT-5
2024-09-30
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-5
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Gemini 1.5 Flash
Avg Score:68.9%
Providers:1
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GPT-5
Avg Score:88.1%(+19.2%)
Providers:2