Gemini 1.5 Pro vs Gemini 1.5 Flash
Compare Gemini 1.5 Pro vs Gemini 1.5 Flash API pricing, token costs, context windows, and latency. See which model is cheaper and better for your stack.
Full Metric & Specification Comparison
| Metric | Gemini 1.5 Pro | Gemini 1.5 Flash | Advantage |
|---|---|---|---|
| Provider | - | ||
| Input Token Cost (1M) | $1.250 | $0.075 | Gemini 1.5 Flash |
| Output Token Cost (1M) | $5.000 | $0.300 | Gemini 1.5 Flash |
| Context Window | 2,000k tokens | 1,000k tokens | Gemini 1.5 Pro |
| Intelligence Benchmark Score | 90/100 | 79/100 | Gemini 1.5 Pro |
| Streaming Latency | Fast | Ultra-Fast | - |
Key Architectural Takeaways
- Input Token Cost: Gemini 1.5 Pro is $1.25/1M vs Gemini 1.5 Flash at $0.07/1M
- Output Token Cost: Gemini 1.5 Pro is $5.00/1M vs Gemini 1.5 Flash at $0.30/1M
- Context Window: Gemini 1.5 Pro supports 2,000k tokens vs Gemini 1.5 Flash with 1,000k tokens
- Benchmark Intelligence Rating: Gemini 1.5 Pro scores 90/100 vs Gemini 1.5 Flash at 79/100
- Inference Latency: Gemini 1.5 Pro is rated Fast vs Gemini 1.5 Flash rated Ultra-Fast
Simulate Your Team's Actual Spend
Quick Workload Presets
Pick a ready-made scenario or customize your token volume below.
Token & Usage Parameters
By switching or routing background tasks from GPT-4o to Gemini 1.5 Flash, your team saves up to $2,270 annually.
Lowest cost per token, high-frequency tasks, real-time audio/video
State-of-the-art open economics, high-performance general intelligence
High-volume text processing, fast chatbots, classification
Open-weights privacy, self-hosting or ultra-cheap hosted inferencing
Rapid code completion, customer service, structured data extraction
Fast STEM reasoning, competitive programming at lower cost
Massive context (2M tokens), full video/audio analysis, large codebases
Multilingual tasks, European compliance, enterprise code generation
Complex multimodal reasoning, coding, and production apps
Software engineering, nuanced writing, complex agentic workflows
Advanced mathematics, algorithmic coding, PhD-level scientific logic
Frequently Asked Questions
Is Gemini 1.5 Pro cheaper than Gemini 1.5 Flash?
Gemini 1.5 Flash is significantly more economical, charging $0.07/1M input compared to $1.25/1M for Gemini 1.5 Pro.
Which model should I choose for production?
If your primary constraint is API cost and high query throughput, choose Gemini 1.5 Flash. If you require peak reasoning accuracy and complex tool use, Gemini 1.5 Pro is recommended.
How does context window compare between Gemini 1.5 Pro and Gemini 1.5 Flash?
Gemini 1.5 Pro offers the larger context window (2,000k tokens), allowing you to pass significantly larger codebases or documents without chunking.