OpenAI GPT-4o vs. Gemini 1.5 Pro — Interactive Cost & Performance Calculator
Compare OpenAI GPT-4o vs Gemini 1.5 Pro side-by-side. Use our interactive calculator to estimate exact monthly costs, savings, and performance trade-offs at your scale.
OpenAI GPT-4o
Best for: Multimodal enterprise reasoning & function calling
Gemini 1.5 Pro
Best for: Massive codebase, video & full-repository analysis
Side-by-Side Technical & Commercial Breakdown: OpenAI GPT-4o vs. Gemini 1.5 Pro
| Dimension | OpenAI GPT-4o | Gemini 1.5 Pro |
|---|---|---|
| Provider | OpenAI | Google Cloud Vertex |
| Input Price (per 1M tokens) | $2.500 | $1.250 |
| Output Price (per 1M tokens) | $10.00 | $5.00 |
| Context Window | 128K tokens | 2,000K (2M) tokens |
| Throughput Speed | 85 tok/s | 82 tok/s |
| License / Weights | Proprietary API | Proprietary API |
| Best Use Case | Multimodal enterprise reasoning & function calling | Massive codebase, video & full-repository analysis |
Frequently Asked Questions
Which is more cost-effective in 2026: OpenAI GPT-4o or Gemini 1.5 Pro?
It depends on your workload volume. Use the interactive sliders above to model your exact monthly scale. OpenAI GPT-4o (Multimodal enterprise reasoning & function calling) and Gemini 1.5 Pro (Massive codebase, video & full-repository analysis) have different unit economics that cross over as volume scales.
When should an engineering team choose OpenAI GPT-4o over Gemini 1.5 Pro?
Choose OpenAI GPT-4o when your primary priority is: Multimodal enterprise reasoning & function calling. Choose Gemini 1.5 Pro when you prioritize: Massive codebase, video & full-repository analysis.