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.
Gemini 1.5 Pro charges $1.25/1M input and $5.00/1M output tokens, compared to Gemini 1.5 Flash at $0.07/1M input and $0.30/1M output. Gemini 1.5 Flash is 16.7x cheaper on input tokens. In benchmark reasoning, Gemini 1.5 Pro holds the higher intelligence rating (90/100). For latency-critical streaming, Gemini 1.5 Pro delivers 82 t/s (510ms TTFT) while Gemini 1.5 Flash provides 180 t/s (210ms TTFT).
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
Calculate Your Team's Exact Bill Difference
Drag the sliders below to see real-time cost divergences based on your daily token consumption.
Deploying Gemini 1.5 Flash over Gemini 1.5 Pro saves $52.88/mo ($635/yr) at this volume.
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.
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