+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
Gemini 3 Flash vs GPT-5
Comprehensive side-by-side LLM comparison
Gemini 3 Flash leads with 3.1% higher average benchmark score. Gemini 3 Flash offers 575.4K more tokens in context window than GPT-5. Gemini 3 Flash is $149.50 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
+
+
+
+
Google DeepMind
Gemini 3 Flash, released by Google in December 2025, is a large language model from the Gemini 3 family that delivers reasoning and coding performance with efficiency optimized for high-volume workloads. It features a 1M token context window, 64K maximum output tokens, and native support for text, image, audio, video, and PDF input. Gemini 3 Flash targets cost-sensitive agentic workflows, document processing, and production APIs requiring fast, capable multimodal responses.
+
+
+
+
OpenAI
GPT-5, released by OpenAI on August 7, 2025, is a large language model that combines direct generation and extended reasoning in a single unified system with a built-in routing mechanism. It features a 400K token context window, 128K maximum output tokens, native multimodal support (text, image, audio, video), and demonstrated strong results across coding, mathematics, visual understanding, and health benchmarks at release. GPT-5 targets complex multi-step tasks including advanced coding, mathematical problem solving, and long-context analysis.
4 months newer
GPT-5
OpenAI
2025-08-07
Gemini 3 Flash
Google DeepMind
2025-12-17
Pricing Comparison
Cost per million tokens (USD)
+
+
+
+
Gemini 3 Flash
Input:$0.10
Output:$0.40($149.50 cheaper)
+
+
+
+
GPT-5
Input:$30.00
Output:$120.00
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
+
+
+
+
Gemini 3 Flash
Average Score:78.0%(+3.1%)
+
+
+
+
GPT-5
Average Score:74.9%
Performance comparison across key benchmark categories
+
+
+
+
Gemini 3 Flash
Coding78.0%(+3.1%)
+
+
+
+
GPT-5
Coding74.9%
+
+
+
+
Knowledge Cutoff
Training data recency comparison
GPT-5
2025-05
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
Gemini 3 Flash
2 providers
Google Cloud Vertex AI
+
+
+
+
GPT-5
+
+
+
+
Gemini 3 Flash
Avg Score:78.0%(+3.1%)
Providers:2
+
+
+
+
GPT-5
Avg Score:74.9%
Providers:1