GPT-4o vs Gemini 2.5 Pro
Side-by-side API pricing and capability comparison
OpenAI
GPT-4o
OpenAI's flagship multimodal model — combines speed, intelligence, and vision capabilities.
Input /1M
$2.50
Output /1M
$10.00
Context
128K
Tier
efficient
Prompt caching: $1.25/1M input
Full GPT-4o pricing →Gemini 2.5 Pro
Google's most capable model with 1M token context — leads benchmarks in coding and reasoning.
Input /1M
$1.25
Output /1M
$10.00
Context
1M
Tier
frontier
Monthly Cost Comparison
| Usage scenario | GPT-4o | Gemini 2.5 Pro | Cheaper by |
|---|---|---|---|
Light usage 50K in + 20K out /day | $9.75 | $7.88 | Gemini 2.5 Pro 19% cheaper |
Medium usage 500K in + 150K out /day | $82.50 | $63.75 | Gemini 2.5 Pro 23% cheaper |
Heavy usage 3000K in + 1000K out /day | $525.00 | $412.50 | Gemini 2.5 Pro 21% cheaper |
Feature Comparison
When to Use Each
Choose GPT-4o when:
- You prefer OpenAI's ecosystem and tooling
Choose Gemini 2.5 Pro when:
- Cost efficiency is critical — 50% cheaper input
- You need a larger context window (1000K vs 128K)
- Extended reasoning is required
- You prefer Google's ecosystem and tooling
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